1 2 /* 3 Defines the basic matrix operations for the BAIJ (compressed row) 4 matrix storage format. 5 */ 6 #include <../src/mat/impls/baij/seq/baij.h> /*I "petscmat.h" I*/ 7 #include <petscblaslapack.h> 8 #include <petsc-private/kernels/blockinvert.h> 9 #include <petsc-private/kernels/blockmatmult.h> 10 11 #undef __FUNCT__ 12 #define __FUNCT__ "MatInvertBlockDiagonal_SeqBAIJ" 13 PetscErrorCode MatInvertBlockDiagonal_SeqBAIJ(Mat A,const PetscScalar **values) 14 { 15 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*) A->data; 16 PetscErrorCode ierr; 17 PetscInt *diag_offset,i,bs = A->rmap->bs,mbs = a->mbs,ipvt[5],bs2 = bs*bs,*v_pivots; 18 MatScalar *v = a->a,*odiag,*diag,*mdiag,work[25],*v_work; 19 PetscReal shift = 0.0; 20 21 PetscFunctionBegin; 22 if (a->idiagvalid) { 23 if (values) *values = a->idiag; 24 PetscFunctionReturn(0); 25 } 26 ierr = MatMarkDiagonal_SeqBAIJ(A);CHKERRQ(ierr); 27 diag_offset = a->diag; 28 if (!a->idiag) { 29 ierr = PetscMalloc(2*bs2*mbs*sizeof(PetscScalar),&a->idiag);CHKERRQ(ierr); 30 ierr = PetscLogObjectMemory((PetscObject)A,2*bs2*mbs*sizeof(PetscScalar));CHKERRQ(ierr); 31 } 32 diag = a->idiag; 33 mdiag = a->idiag+bs2*mbs; 34 if (values) *values = a->idiag; 35 /* factor and invert each block */ 36 switch (bs) { 37 case 1: 38 for (i=0; i<mbs; i++) { 39 odiag = v + 1*diag_offset[i]; 40 diag[0] = odiag[0]; 41 mdiag[0] = odiag[0]; 42 diag[0] = (PetscScalar)1.0 / (diag[0] + shift); 43 diag += 1; 44 mdiag += 1; 45 } 46 break; 47 case 2: 48 for (i=0; i<mbs; i++) { 49 odiag = v + 4*diag_offset[i]; 50 diag[0] = odiag[0]; diag[1] = odiag[1]; diag[2] = odiag[2]; diag[3] = odiag[3]; 51 mdiag[0] = odiag[0]; mdiag[1] = odiag[1]; mdiag[2] = odiag[2]; mdiag[3] = odiag[3]; 52 ierr = PetscKernel_A_gets_inverse_A_2(diag,shift);CHKERRQ(ierr); 53 diag += 4; 54 mdiag += 4; 55 } 56 break; 57 case 3: 58 for (i=0; i<mbs; i++) { 59 odiag = v + 9*diag_offset[i]; 60 diag[0] = odiag[0]; diag[1] = odiag[1]; diag[2] = odiag[2]; diag[3] = odiag[3]; 61 diag[4] = odiag[4]; diag[5] = odiag[5]; diag[6] = odiag[6]; diag[7] = odiag[7]; 62 diag[8] = odiag[8]; 63 mdiag[0] = odiag[0]; mdiag[1] = odiag[1]; mdiag[2] = odiag[2]; mdiag[3] = odiag[3]; 64 mdiag[4] = odiag[4]; mdiag[5] = odiag[5]; mdiag[6] = odiag[6]; mdiag[7] = odiag[7]; 65 mdiag[8] = odiag[8]; 66 ierr = PetscKernel_A_gets_inverse_A_3(diag,shift);CHKERRQ(ierr); 67 diag += 9; 68 mdiag += 9; 69 } 70 break; 71 case 4: 72 for (i=0; i<mbs; i++) { 73 odiag = v + 16*diag_offset[i]; 74 ierr = PetscMemcpy(diag,odiag,16*sizeof(PetscScalar));CHKERRQ(ierr); 75 ierr = PetscMemcpy(mdiag,odiag,16*sizeof(PetscScalar));CHKERRQ(ierr); 76 ierr = PetscKernel_A_gets_inverse_A_4(diag,shift);CHKERRQ(ierr); 77 diag += 16; 78 mdiag += 16; 79 } 80 break; 81 case 5: 82 for (i=0; i<mbs; i++) { 83 odiag = v + 25*diag_offset[i]; 84 ierr = PetscMemcpy(diag,odiag,25*sizeof(PetscScalar));CHKERRQ(ierr); 85 ierr = PetscMemcpy(mdiag,odiag,25*sizeof(PetscScalar));CHKERRQ(ierr); 86 ierr = PetscKernel_A_gets_inverse_A_5(diag,ipvt,work,shift);CHKERRQ(ierr); 87 diag += 25; 88 mdiag += 25; 89 } 90 break; 91 case 6: 92 for (i=0; i<mbs; i++) { 93 odiag = v + 36*diag_offset[i]; 94 ierr = PetscMemcpy(diag,odiag,36*sizeof(PetscScalar));CHKERRQ(ierr); 95 ierr = PetscMemcpy(mdiag,odiag,36*sizeof(PetscScalar));CHKERRQ(ierr); 96 ierr = PetscKernel_A_gets_inverse_A_6(diag,shift);CHKERRQ(ierr); 97 diag += 36; 98 mdiag += 36; 99 } 100 break; 101 case 7: 102 for (i=0; i<mbs; i++) { 103 odiag = v + 49*diag_offset[i]; 104 ierr = PetscMemcpy(diag,odiag,49*sizeof(PetscScalar));CHKERRQ(ierr); 105 ierr = PetscMemcpy(mdiag,odiag,49*sizeof(PetscScalar));CHKERRQ(ierr); 106 ierr = PetscKernel_A_gets_inverse_A_7(diag,shift);CHKERRQ(ierr); 107 diag += 49; 108 mdiag += 49; 109 } 110 break; 111 default: 112 ierr = PetscMalloc2(bs,MatScalar,&v_work,bs,PetscInt,&v_pivots);CHKERRQ(ierr); 113 for (i=0; i<mbs; i++) { 114 odiag = v + bs2*diag_offset[i]; 115 ierr = PetscMemcpy(diag,odiag,bs2*sizeof(PetscScalar));CHKERRQ(ierr); 116 ierr = PetscMemcpy(mdiag,odiag,bs2*sizeof(PetscScalar));CHKERRQ(ierr); 117 ierr = PetscKernel_A_gets_inverse_A(bs,diag,v_pivots,v_work);CHKERRQ(ierr); 118 diag += bs2; 119 mdiag += bs2; 120 } 121 ierr = PetscFree2(v_work,v_pivots);CHKERRQ(ierr); 122 } 123 a->idiagvalid = PETSC_TRUE; 124 PetscFunctionReturn(0); 125 } 126 127 #undef __FUNCT__ 128 #define __FUNCT__ "MatSOR_SeqBAIJ" 129 PetscErrorCode MatSOR_SeqBAIJ(Mat A,Vec bb,PetscReal omega,MatSORType flag,PetscReal fshift,PetscInt its,PetscInt lits,Vec xx) 130 { 131 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 132 PetscScalar *x,*work,*w,*workt,*t; 133 const MatScalar *v,*aa = a->a, *idiag; 134 const PetscScalar *b,*xb; 135 PetscScalar s[7], xw[7]={0}; /* avoid some compilers thinking xw is uninitialized */ 136 PetscErrorCode ierr; 137 PetscInt m = a->mbs,i,i2,nz,bs = A->rmap->bs,bs2 = bs*bs,k,j,idx,it; 138 const PetscInt *diag,*ai = a->i,*aj = a->j,*vi; 139 140 PetscFunctionBegin; 141 its = its*lits; 142 if (flag & SOR_EISENSTAT) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"No support yet for Eisenstat"); 143 if (its <= 0) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Relaxation requires global its %D and local its %D both positive",its,lits); 144 if (fshift) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Sorry, no support for diagonal shift"); 145 if (omega != 1.0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Sorry, no support for non-trivial relaxation factor"); 146 if ((flag & SOR_APPLY_UPPER) || (flag & SOR_APPLY_LOWER)) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Sorry, no support for applying upper or lower triangular parts"); 147 148 if (!a->idiagvalid) {ierr = MatInvertBlockDiagonal(A,NULL);CHKERRQ(ierr);} 149 150 if (!m) PetscFunctionReturn(0); 151 diag = a->diag; 152 idiag = a->idiag; 153 k = PetscMax(A->rmap->n,A->cmap->n); 154 if (!a->mult_work) { 155 ierr = PetscMalloc((2*k+1)*sizeof(PetscScalar),&a->mult_work);CHKERRQ(ierr); 156 } 157 work = a->mult_work; 158 t = work + k+1; 159 if (!a->sor_work) { 160 ierr = PetscMalloc(bs*sizeof(PetscScalar),&a->sor_work);CHKERRQ(ierr); 161 } 162 w = a->sor_work; 163 164 ierr = VecGetArray(xx,&x);CHKERRQ(ierr); 165 ierr = VecGetArrayRead(bb,&b);CHKERRQ(ierr); 166 167 if (flag & SOR_ZERO_INITIAL_GUESS) { 168 if (flag & SOR_FORWARD_SWEEP || flag & SOR_LOCAL_FORWARD_SWEEP) { 169 switch (bs) { 170 case 1: 171 PetscKernel_v_gets_A_times_w_1(x,idiag,b); 172 t[0] = b[0]; 173 i2 = 1; 174 idiag += 1; 175 for (i=1; i<m; i++) { 176 v = aa + ai[i]; 177 vi = aj + ai[i]; 178 nz = diag[i] - ai[i]; 179 s[0] = b[i2]; 180 for (j=0; j<nz; j++) { 181 xw[0] = x[vi[j]]; 182 PetscKernel_v_gets_v_minus_A_times_w_1(s,(v+j),xw); 183 } 184 t[i2] = s[0]; 185 PetscKernel_v_gets_A_times_w_1(xw,idiag,s); 186 x[i2] = xw[0]; 187 idiag += 1; 188 i2 += 1; 189 } 190 break; 191 case 2: 192 PetscKernel_v_gets_A_times_w_2(x,idiag,b); 193 t[0] = b[0]; t[1] = b[1]; 194 i2 = 2; 195 idiag += 4; 196 for (i=1; i<m; i++) { 197 v = aa + 4*ai[i]; 198 vi = aj + ai[i]; 199 nz = diag[i] - ai[i]; 200 s[0] = b[i2]; s[1] = b[i2+1]; 201 for (j=0; j<nz; j++) { 202 idx = 2*vi[j]; 203 it = 4*j; 204 xw[0] = x[idx]; xw[1] = x[1+idx]; 205 PetscKernel_v_gets_v_minus_A_times_w_2(s,(v+it),xw); 206 } 207 t[i2] = s[0]; t[i2+1] = s[1]; 208 PetscKernel_v_gets_A_times_w_2(xw,idiag,s); 209 x[i2] = xw[0]; x[i2+1] = xw[1]; 210 idiag += 4; 211 i2 += 2; 212 } 213 break; 214 case 3: 215 PetscKernel_v_gets_A_times_w_3(x,idiag,b); 216 t[0] = b[0]; t[1] = b[1]; t[2] = b[2]; 217 i2 = 3; 218 idiag += 9; 219 for (i=1; i<m; i++) { 220 v = aa + 9*ai[i]; 221 vi = aj + ai[i]; 222 nz = diag[i] - ai[i]; 223 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; 224 while (nz--) { 225 idx = 3*(*vi++); 226 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 227 PetscKernel_v_gets_v_minus_A_times_w_3(s,v,xw); 228 v += 9; 229 } 230 t[i2] = s[0]; t[i2+1] = s[1]; t[i2+2] = s[2]; 231 PetscKernel_v_gets_A_times_w_3(xw,idiag,s); 232 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; 233 idiag += 9; 234 i2 += 3; 235 } 236 break; 237 case 4: 238 PetscKernel_v_gets_A_times_w_4(x,idiag,b); 239 t[0] = b[0]; t[1] = b[1]; t[2] = b[2]; t[3] = b[3]; 240 i2 = 4; 241 idiag += 16; 242 for (i=1; i<m; i++) { 243 v = aa + 16*ai[i]; 244 vi = aj + ai[i]; 245 nz = diag[i] - ai[i]; 246 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; 247 while (nz--) { 248 idx = 4*(*vi++); 249 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; 250 PetscKernel_v_gets_v_minus_A_times_w_4(s,v,xw); 251 v += 16; 252 } 253 t[i2] = s[0]; t[i2+1] = s[1]; t[i2+2] = s[2]; t[i2 + 3] = s[3]; 254 PetscKernel_v_gets_A_times_w_4(xw,idiag,s); 255 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; 256 idiag += 16; 257 i2 += 4; 258 } 259 break; 260 case 5: 261 PetscKernel_v_gets_A_times_w_5(x,idiag,b); 262 t[0] = b[0]; t[1] = b[1]; t[2] = b[2]; t[3] = b[3]; t[4] = b[4]; 263 i2 = 5; 264 idiag += 25; 265 for (i=1; i<m; i++) { 266 v = aa + 25*ai[i]; 267 vi = aj + ai[i]; 268 nz = diag[i] - ai[i]; 269 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; s[4] = b[i2+4]; 270 while (nz--) { 271 idx = 5*(*vi++); 272 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; xw[4] = x[4+idx]; 273 PetscKernel_v_gets_v_minus_A_times_w_5(s,v,xw); 274 v += 25; 275 } 276 t[i2] = s[0]; t[i2+1] = s[1]; t[i2+2] = s[2]; t[i2+3] = s[3]; t[i2+4] = s[4]; 277 PetscKernel_v_gets_A_times_w_5(xw,idiag,s); 278 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; x[i2+4] = xw[4]; 279 idiag += 25; 280 i2 += 5; 281 } 282 break; 283 case 6: 284 PetscKernel_v_gets_A_times_w_6(x,idiag,b); 285 t[0] = b[0]; t[1] = b[1]; t[2] = b[2]; t[3] = b[3]; t[4] = b[4]; t[5] = b[5]; 286 i2 = 6; 287 idiag += 36; 288 for (i=1; i<m; i++) { 289 v = aa + 36*ai[i]; 290 vi = aj + ai[i]; 291 nz = diag[i] - ai[i]; 292 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; s[4] = b[i2+4]; s[5] = b[i2+5]; 293 while (nz--) { 294 idx = 6*(*vi++); 295 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 296 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; 297 PetscKernel_v_gets_v_minus_A_times_w_6(s,v,xw); 298 v += 36; 299 } 300 t[i2] = s[0]; t[i2+1] = s[1]; t[i2+2] = s[2]; 301 t[i2+3] = s[3]; t[i2+4] = s[4]; t[i2+5] = s[5]; 302 PetscKernel_v_gets_A_times_w_6(xw,idiag,s); 303 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; x[i2+4] = xw[4]; x[i2+5] = xw[5]; 304 idiag += 36; 305 i2 += 6; 306 } 307 break; 308 case 7: 309 PetscKernel_v_gets_A_times_w_7(x,idiag,b); 310 t[0] = b[0]; t[1] = b[1]; t[2] = b[2]; 311 t[3] = b[3]; t[4] = b[4]; t[5] = b[5]; t[6] = b[6]; 312 i2 = 7; 313 idiag += 49; 314 for (i=1; i<m; i++) { 315 v = aa + 49*ai[i]; 316 vi = aj + ai[i]; 317 nz = diag[i] - ai[i]; 318 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; 319 s[3] = b[i2+3]; s[4] = b[i2+4]; s[5] = b[i2+5]; s[6] = b[i2+6]; 320 while (nz--) { 321 idx = 7*(*vi++); 322 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 323 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; xw[6] = x[6+idx]; 324 PetscKernel_v_gets_v_minus_A_times_w_7(s,v,xw); 325 v += 49; 326 } 327 t[i2] = s[0]; t[i2+1] = s[1]; t[i2+2] = s[2]; 328 t[i2+3] = s[3]; t[i2+4] = s[4]; t[i2+5] = s[5]; t[i2+6] = s[6]; 329 PetscKernel_v_gets_A_times_w_7(xw,idiag,s); 330 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; 331 x[i2+3] = xw[3]; x[i2+4] = xw[4]; x[i2+5] = xw[5]; x[i2+6] = xw[6]; 332 idiag += 49; 333 i2 += 7; 334 } 335 break; 336 default: 337 PetscKernel_w_gets_Ar_times_v(bs,bs,b,idiag,x); 338 ierr = PetscMemcpy(t,b,bs*sizeof(PetscScalar));CHKERRQ(ierr); 339 i2 = bs; 340 idiag += bs2; 341 for (i=1; i<m; i++) { 342 v = aa + bs2*ai[i]; 343 vi = aj + ai[i]; 344 nz = diag[i] - ai[i]; 345 346 ierr = PetscMemcpy(w,b+i2,bs*sizeof(PetscScalar));CHKERRQ(ierr); 347 /* copy all rows of x that are needed into contiguous space */ 348 workt = work; 349 for (j=0; j<nz; j++) { 350 ierr = PetscMemcpy(workt,x + bs*(*vi++),bs*sizeof(PetscScalar));CHKERRQ(ierr); 351 workt += bs; 352 } 353 PetscKernel_w_gets_w_minus_Ar_times_v(bs,bs*nz,w,v,work); 354 ierr = PetscMemcpy(t+i2,w,bs*sizeof(PetscScalar));CHKERRQ(ierr); 355 PetscKernel_w_gets_Ar_times_v(bs,bs,w,idiag,x+i2); 356 357 idiag += bs2; 358 i2 += bs; 359 } 360 break; 361 } 362 /* for logging purposes assume number of nonzero in lower half is 1/2 of total */ 363 ierr = PetscLogFlops(1.0*bs2*a->nz);CHKERRQ(ierr); 364 xb = t; 365 } 366 else xb = b; 367 if (flag & SOR_BACKWARD_SWEEP || flag & SOR_LOCAL_BACKWARD_SWEEP) { 368 idiag = a->idiag+bs2*(a->mbs-1); 369 i2 = bs * (m-1); 370 switch (bs) { 371 case 1: 372 s[0] = xb[i2]; 373 PetscKernel_v_gets_A_times_w_1(xw,idiag,s); 374 x[i2] = xw[0]; 375 i2 -= 1; 376 for (i=m-2; i>=0; i--) { 377 v = aa + (diag[i]+1); 378 vi = aj + diag[i] + 1; 379 nz = ai[i+1] - diag[i] - 1; 380 s[0] = xb[i2]; 381 for (j=0; j<nz; j++) { 382 xw[0] = x[vi[j]]; 383 PetscKernel_v_gets_v_minus_A_times_w_1(s,(v+j),xw); 384 } 385 PetscKernel_v_gets_A_times_w_1(xw,idiag,s); 386 x[i2] = xw[0]; 387 idiag -= 1; 388 i2 -= 1; 389 } 390 break; 391 case 2: 392 s[0] = xb[i2]; s[1] = xb[i2+1]; 393 PetscKernel_v_gets_A_times_w_2(xw,idiag,s); 394 x[i2] = xw[0]; x[i2+1] = xw[1]; 395 i2 -= 2; 396 idiag -= 4; 397 for (i=m-2; i>=0; i--) { 398 v = aa + 4*(diag[i] + 1); 399 vi = aj + diag[i] + 1; 400 nz = ai[i+1] - diag[i] - 1; 401 s[0] = xb[i2]; s[1] = xb[i2+1]; 402 for (j=0; j<nz; j++) { 403 idx = 2*vi[j]; 404 it = 4*j; 405 xw[0] = x[idx]; xw[1] = x[1+idx]; 406 PetscKernel_v_gets_v_minus_A_times_w_2(s,(v+it),xw); 407 } 408 PetscKernel_v_gets_A_times_w_2(xw,idiag,s); 409 x[i2] = xw[0]; x[i2+1] = xw[1]; 410 idiag -= 4; 411 i2 -= 2; 412 } 413 break; 414 case 3: 415 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; 416 PetscKernel_v_gets_A_times_w_3(xw,idiag,s); 417 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; 418 i2 -= 3; 419 idiag -= 9; 420 for (i=m-2; i>=0; i--) { 421 v = aa + 9*(diag[i]+1); 422 vi = aj + diag[i] + 1; 423 nz = ai[i+1] - diag[i] - 1; 424 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; 425 while (nz--) { 426 idx = 3*(*vi++); 427 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 428 PetscKernel_v_gets_v_minus_A_times_w_3(s,v,xw); 429 v += 9; 430 } 431 PetscKernel_v_gets_A_times_w_3(xw,idiag,s); 432 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; 433 idiag -= 9; 434 i2 -= 3; 435 } 436 break; 437 case 4: 438 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; s[3] = xb[i2+3]; 439 PetscKernel_v_gets_A_times_w_4(xw,idiag,s); 440 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; 441 i2 -= 4; 442 idiag -= 16; 443 for (i=m-2; i>=0; i--) { 444 v = aa + 16*(diag[i]+1); 445 vi = aj + diag[i] + 1; 446 nz = ai[i+1] - diag[i] - 1; 447 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; s[3] = xb[i2+3]; 448 while (nz--) { 449 idx = 4*(*vi++); 450 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; 451 PetscKernel_v_gets_v_minus_A_times_w_4(s,v,xw); 452 v += 16; 453 } 454 PetscKernel_v_gets_A_times_w_4(xw,idiag,s); 455 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; 456 idiag -= 16; 457 i2 -= 4; 458 } 459 break; 460 case 5: 461 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; s[3] = xb[i2+3]; s[4] = xb[i2+4]; 462 PetscKernel_v_gets_A_times_w_5(xw,idiag,s); 463 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; x[i2+4] = xw[4]; 464 i2 -= 5; 465 idiag -= 25; 466 for (i=m-2; i>=0; i--) { 467 v = aa + 25*(diag[i]+1); 468 vi = aj + diag[i] + 1; 469 nz = ai[i+1] - diag[i] - 1; 470 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; s[3] = xb[i2+3]; s[4] = xb[i2+4]; 471 while (nz--) { 472 idx = 5*(*vi++); 473 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; xw[4] = x[4+idx]; 474 PetscKernel_v_gets_v_minus_A_times_w_5(s,v,xw); 475 v += 25; 476 } 477 PetscKernel_v_gets_A_times_w_5(xw,idiag,s); 478 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; x[i2+4] = xw[4]; 479 idiag -= 25; 480 i2 -= 5; 481 } 482 break; 483 case 6: 484 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; s[3] = xb[i2+3]; s[4] = xb[i2+4]; s[5] = xb[i2+5]; 485 PetscKernel_v_gets_A_times_w_6(xw,idiag,s); 486 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; x[i2+4] = xw[4]; x[i2+5] = xw[5]; 487 i2 -= 6; 488 idiag -= 36; 489 for (i=m-2; i>=0; i--) { 490 v = aa + 36*(diag[i]+1); 491 vi = aj + diag[i] + 1; 492 nz = ai[i+1] - diag[i] - 1; 493 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; s[3] = xb[i2+3]; s[4] = xb[i2+4]; s[5] = xb[i2+5]; 494 while (nz--) { 495 idx = 6*(*vi++); 496 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 497 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; 498 PetscKernel_v_gets_v_minus_A_times_w_6(s,v,xw); 499 v += 36; 500 } 501 PetscKernel_v_gets_A_times_w_6(xw,idiag,s); 502 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; x[i2+3] = xw[3]; x[i2+4] = xw[4]; x[i2+5] = xw[5]; 503 idiag -= 36; 504 i2 -= 6; 505 } 506 break; 507 case 7: 508 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; 509 s[3] = xb[i2+3]; s[4] = xb[i2+4]; s[5] = xb[i2+5]; s[6] = xb[i2+6]; 510 PetscKernel_v_gets_A_times_w_7(x,idiag,b); 511 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; 512 x[i2+3] = xw[3]; x[i2+4] = xw[4]; x[i2+5] = xw[5]; x[i2+6] = xw[6]; 513 i2 -= 7; 514 idiag -= 49; 515 for (i=m-2; i>=0; i--) { 516 v = aa + 49*(diag[i]+1); 517 vi = aj + diag[i] + 1; 518 nz = ai[i+1] - diag[i] - 1; 519 s[0] = xb[i2]; s[1] = xb[i2+1]; s[2] = xb[i2+2]; 520 s[3] = xb[i2+3]; s[4] = xb[i2+4]; s[5] = xb[i2+5]; s[6] = xb[i2+6]; 521 while (nz--) { 522 idx = 7*(*vi++); 523 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 524 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; xw[6] = x[6+idx]; 525 PetscKernel_v_gets_v_minus_A_times_w_7(s,v,xw); 526 v += 49; 527 } 528 PetscKernel_v_gets_A_times_w_7(xw,idiag,s); 529 x[i2] = xw[0]; x[i2+1] = xw[1]; x[i2+2] = xw[2]; 530 x[i2+3] = xw[3]; x[i2+4] = xw[4]; x[i2+5] = xw[5]; x[i2+6] = xw[6]; 531 idiag -= 49; 532 i2 -= 7; 533 } 534 break; 535 default: 536 ierr = PetscMemcpy(w,xb+i2,bs*sizeof(PetscScalar));CHKERRQ(ierr); 537 PetscKernel_w_gets_Ar_times_v(bs,bs,w,idiag,x+i2); 538 i2 -= bs; 539 idiag -= bs2; 540 for (i=m-2; i>=0; i--) { 541 v = aa + bs2*(diag[i]+1); 542 vi = aj + diag[i] + 1; 543 nz = ai[i+1] - diag[i] - 1; 544 545 ierr = PetscMemcpy(w,xb+i2,bs*sizeof(PetscScalar));CHKERRQ(ierr); 546 /* copy all rows of x that are needed into contiguous space */ 547 workt = work; 548 for (j=0; j<nz; j++) { 549 ierr = PetscMemcpy(workt,x + bs*(*vi++),bs*sizeof(PetscScalar));CHKERRQ(ierr); 550 workt += bs; 551 } 552 PetscKernel_w_gets_w_minus_Ar_times_v(bs,bs*nz,w,v,work); 553 PetscKernel_w_gets_Ar_times_v(bs,bs,w,idiag,x+i2); 554 555 idiag -= bs2; 556 i2 -= bs; 557 } 558 break; 559 } 560 ierr = PetscLogFlops(1.0*bs2*(a->nz));CHKERRQ(ierr); 561 } 562 its--; 563 } 564 while (its--) { 565 if (flag & SOR_FORWARD_SWEEP || flag & SOR_LOCAL_FORWARD_SWEEP) { 566 idiag = a->idiag; 567 i2 = 0; 568 switch (bs) { 569 case 1: 570 for (i=0; i<m; i++) { 571 v = aa + ai[i]; 572 vi = aj + ai[i]; 573 nz = ai[i+1] - ai[i]; 574 s[0] = b[i2]; 575 for (j=0; j<nz; j++) { 576 xw[0] = x[vi[j]]; 577 PetscKernel_v_gets_v_minus_A_times_w_1(s,(v+j),xw); 578 } 579 PetscKernel_v_gets_A_times_w_1(xw,idiag,s); 580 x[i2] += xw[0]; 581 idiag += 1; 582 i2 += 1; 583 } 584 break; 585 case 2: 586 for (i=0; i<m; i++) { 587 v = aa + 4*ai[i]; 588 vi = aj + ai[i]; 589 nz = ai[i+1] - ai[i]; 590 s[0] = b[i2]; s[1] = b[i2+1]; 591 for (j=0; j<nz; j++) { 592 idx = 2*vi[j]; 593 it = 4*j; 594 xw[0] = x[idx]; xw[1] = x[1+idx]; 595 PetscKernel_v_gets_v_minus_A_times_w_2(s,(v+it),xw); 596 } 597 PetscKernel_v_gets_A_times_w_2(xw,idiag,s); 598 x[i2] += xw[0]; x[i2+1] += xw[1]; 599 idiag += 4; 600 i2 += 2; 601 } 602 break; 603 case 3: 604 for (i=0; i<m; i++) { 605 v = aa + 9*ai[i]; 606 vi = aj + ai[i]; 607 nz = ai[i+1] - ai[i]; 608 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; 609 while (nz--) { 610 idx = 3*(*vi++); 611 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 612 PetscKernel_v_gets_v_minus_A_times_w_3(s,v,xw); 613 v += 9; 614 } 615 PetscKernel_v_gets_A_times_w_3(xw,idiag,s); 616 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; 617 idiag += 9; 618 i2 += 3; 619 } 620 break; 621 case 4: 622 for (i=0; i<m; i++) { 623 v = aa + 16*ai[i]; 624 vi = aj + ai[i]; 625 nz = ai[i+1] - ai[i]; 626 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; 627 while (nz--) { 628 idx = 4*(*vi++); 629 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; 630 PetscKernel_v_gets_v_minus_A_times_w_4(s,v,xw); 631 v += 16; 632 } 633 PetscKernel_v_gets_A_times_w_4(xw,idiag,s); 634 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; x[i2+3] += xw[3]; 635 idiag += 16; 636 i2 += 4; 637 } 638 break; 639 case 5: 640 for (i=0; i<m; i++) { 641 v = aa + 25*ai[i]; 642 vi = aj + ai[i]; 643 nz = ai[i+1] - ai[i]; 644 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; s[4] = b[i2+4]; 645 while (nz--) { 646 idx = 5*(*vi++); 647 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; xw[4] = x[4+idx]; 648 PetscKernel_v_gets_v_minus_A_times_w_5(s,v,xw); 649 v += 25; 650 } 651 PetscKernel_v_gets_A_times_w_5(xw,idiag,s); 652 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; x[i2+3] += xw[3]; x[i2+4] += xw[4]; 653 idiag += 25; 654 i2 += 5; 655 } 656 break; 657 case 6: 658 for (i=0; i<m; i++) { 659 v = aa + 36*ai[i]; 660 vi = aj + ai[i]; 661 nz = ai[i+1] - ai[i]; 662 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; s[4] = b[i2+4]; s[5] = b[i2+5]; 663 while (nz--) { 664 idx = 6*(*vi++); 665 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 666 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; 667 PetscKernel_v_gets_v_minus_A_times_w_6(s,v,xw); 668 v += 36; 669 } 670 PetscKernel_v_gets_A_times_w_6(xw,idiag,s); 671 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; 672 x[i2+3] += xw[3]; x[i2+4] += xw[4]; x[i2+5] += xw[5]; 673 idiag += 36; 674 i2 += 6; 675 } 676 break; 677 case 7: 678 for (i=0; i<m; i++) { 679 v = aa + 49*ai[i]; 680 vi = aj + ai[i]; 681 nz = ai[i+1] - ai[i]; 682 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; 683 s[3] = b[i2+3]; s[4] = b[i2+4]; s[5] = b[i2+5]; s[6] = b[i2+6]; 684 while (nz--) { 685 idx = 7*(*vi++); 686 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 687 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; xw[6] = x[6+idx]; 688 PetscKernel_v_gets_v_minus_A_times_w_7(s,v,xw); 689 v += 49; 690 } 691 PetscKernel_v_gets_A_times_w_7(xw,idiag,s); 692 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; 693 x[i2+3] += xw[3]; x[i2+4] += xw[4]; x[i2+5] += xw[5]; x[i2+6] += xw[6]; 694 idiag += 49; 695 i2 += 7; 696 } 697 break; 698 default: 699 for (i=0; i<m; i++) { 700 v = aa + bs2*ai[i]; 701 vi = aj + ai[i]; 702 nz = ai[i+1] - ai[i]; 703 704 ierr = PetscMemcpy(w,b+i2,bs*sizeof(PetscScalar));CHKERRQ(ierr); 705 /* copy all rows of x that are needed into contiguous space */ 706 workt = work; 707 for (j=0; j<nz; j++) { 708 ierr = PetscMemcpy(workt,x + bs*(*vi++),bs*sizeof(PetscScalar));CHKERRQ(ierr); 709 workt += bs; 710 } 711 PetscKernel_w_gets_w_minus_Ar_times_v(bs,bs*nz,w,v,work); 712 PetscKernel_w_gets_w_plus_Ar_times_v(bs,bs,w,idiag,x+i2); 713 714 idiag += bs2; 715 i2 += bs; 716 } 717 break; 718 } 719 ierr = PetscLogFlops(2.0*bs2*a->nz);CHKERRQ(ierr); 720 } 721 if (flag & SOR_BACKWARD_SWEEP || flag & SOR_LOCAL_BACKWARD_SWEEP) { 722 idiag = a->idiag+bs2*(a->mbs-1); 723 i2 = bs * (m-1); 724 switch (bs) { 725 case 1: 726 for (i=m-1; i>=0; i--) { 727 v = aa + ai[i]; 728 vi = aj + ai[i]; 729 nz = ai[i+1] - ai[i]; 730 s[0] = b[i2]; 731 for (j=0; j<nz; j++) { 732 xw[0] = x[vi[j]]; 733 PetscKernel_v_gets_v_minus_A_times_w_1(s,(v+j),xw); 734 } 735 PetscKernel_v_gets_A_times_w_1(xw,idiag,s); 736 x[i2] += xw[0]; 737 idiag -= 1; 738 i2 -= 1; 739 } 740 break; 741 case 2: 742 for (i=m-1; i>=0; i--) { 743 v = aa + 4*ai[i]; 744 vi = aj + ai[i]; 745 nz = ai[i+1] - ai[i]; 746 s[0] = b[i2]; s[1] = b[i2+1]; 747 for (j=0; j<nz; j++) { 748 idx = 2*vi[j]; 749 it = 4*j; 750 xw[0] = x[idx]; xw[1] = x[1+idx]; 751 PetscKernel_v_gets_v_minus_A_times_w_2(s,(v+it),xw); 752 } 753 PetscKernel_v_gets_A_times_w_2(xw,idiag,s); 754 x[i2] += xw[0]; x[i2+1] += xw[1]; 755 idiag -= 4; 756 i2 -= 2; 757 } 758 break; 759 case 3: 760 for (i=m-1; i>=0; i--) { 761 v = aa + 9*ai[i]; 762 vi = aj + ai[i]; 763 nz = ai[i+1] - ai[i]; 764 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; 765 while (nz--) { 766 idx = 3*(*vi++); 767 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 768 PetscKernel_v_gets_v_minus_A_times_w_3(s,v,xw); 769 v += 9; 770 } 771 PetscKernel_v_gets_A_times_w_3(xw,idiag,s); 772 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; 773 idiag -= 9; 774 i2 -= 3; 775 } 776 break; 777 case 4: 778 for (i=m-1; i>=0; i--) { 779 v = aa + 16*ai[i]; 780 vi = aj + ai[i]; 781 nz = ai[i+1] - ai[i]; 782 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; 783 while (nz--) { 784 idx = 4*(*vi++); 785 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; 786 PetscKernel_v_gets_v_minus_A_times_w_4(s,v,xw); 787 v += 16; 788 } 789 PetscKernel_v_gets_A_times_w_4(xw,idiag,s); 790 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; x[i2+3] += xw[3]; 791 idiag -= 16; 792 i2 -= 4; 793 } 794 break; 795 case 5: 796 for (i=m-1; i>=0; i--) { 797 v = aa + 25*ai[i]; 798 vi = aj + ai[i]; 799 nz = ai[i+1] - ai[i]; 800 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; s[4] = b[i2+4]; 801 while (nz--) { 802 idx = 5*(*vi++); 803 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; xw[3] = x[3+idx]; xw[4] = x[4+idx]; 804 PetscKernel_v_gets_v_minus_A_times_w_5(s,v,xw); 805 v += 25; 806 } 807 PetscKernel_v_gets_A_times_w_5(xw,idiag,s); 808 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; x[i2+3] += xw[3]; x[i2+4] += xw[4]; 809 idiag -= 25; 810 i2 -= 5; 811 } 812 break; 813 case 6: 814 for (i=m-1; i>=0; i--) { 815 v = aa + 36*ai[i]; 816 vi = aj + ai[i]; 817 nz = ai[i+1] - ai[i]; 818 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; s[3] = b[i2+3]; s[4] = b[i2+4]; s[5] = b[i2+5]; 819 while (nz--) { 820 idx = 6*(*vi++); 821 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 822 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; 823 PetscKernel_v_gets_v_minus_A_times_w_6(s,v,xw); 824 v += 36; 825 } 826 PetscKernel_v_gets_A_times_w_6(xw,idiag,s); 827 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; 828 x[i2+3] += xw[3]; x[i2+4] += xw[4]; x[i2+5] += xw[5]; 829 idiag -= 36; 830 i2 -= 6; 831 } 832 break; 833 case 7: 834 for (i=m-1; i>=0; i--) { 835 v = aa + 49*ai[i]; 836 vi = aj + ai[i]; 837 nz = ai[i+1] - ai[i]; 838 s[0] = b[i2]; s[1] = b[i2+1]; s[2] = b[i2+2]; 839 s[3] = b[i2+3]; s[4] = b[i2+4]; s[5] = b[i2+5]; s[6] = b[i2+6]; 840 while (nz--) { 841 idx = 7*(*vi++); 842 xw[0] = x[idx]; xw[1] = x[1+idx]; xw[2] = x[2+idx]; 843 xw[3] = x[3+idx]; xw[4] = x[4+idx]; xw[5] = x[5+idx]; xw[6] = x[6+idx]; 844 PetscKernel_v_gets_v_minus_A_times_w_7(s,v,xw); 845 v += 49; 846 } 847 PetscKernel_v_gets_A_times_w_7(xw,idiag,s); 848 x[i2] += xw[0]; x[i2+1] += xw[1]; x[i2+2] += xw[2]; 849 x[i2+3] += xw[3]; x[i2+4] += xw[4]; x[i2+5] += xw[5]; x[i2+6] += xw[6]; 850 idiag -= 49; 851 i2 -= 7; 852 } 853 break; 854 default: 855 for (i=m-1; i>=0; i--) { 856 v = aa + bs2*ai[i]; 857 vi = aj + ai[i]; 858 nz = ai[i+1] - ai[i]; 859 860 ierr = PetscMemcpy(w,b+i2,bs*sizeof(PetscScalar));CHKERRQ(ierr); 861 /* copy all rows of x that are needed into contiguous space */ 862 workt = work; 863 for (j=0; j<nz; j++) { 864 ierr = PetscMemcpy(workt,x + bs*(*vi++),bs*sizeof(PetscScalar));CHKERRQ(ierr); 865 workt += bs; 866 } 867 PetscKernel_w_gets_w_minus_Ar_times_v(bs,bs*nz,w,v,work); 868 PetscKernel_w_gets_w_plus_Ar_times_v(bs,bs,w,idiag,x+i2); 869 870 idiag -= bs2; 871 i2 -= bs; 872 } 873 break; 874 } 875 ierr = PetscLogFlops(2.0*bs2*(a->nz));CHKERRQ(ierr); 876 } 877 } 878 ierr = VecRestoreArray(xx,&x);CHKERRQ(ierr); 879 ierr = VecRestoreArrayRead(bb,&b);CHKERRQ(ierr); 880 PetscFunctionReturn(0); 881 } 882 883 884 /* 885 Special version for direct calls from Fortran (Used in PETSc-fun3d) 886 */ 887 #if defined(PETSC_HAVE_FORTRAN_CAPS) 888 #define matsetvaluesblocked4_ MATSETVALUESBLOCKED4 889 #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE) 890 #define matsetvaluesblocked4_ matsetvaluesblocked4 891 #endif 892 893 #undef __FUNCT__ 894 #define __FUNCT__ "matsetvaluesblocked4_" 895 PETSC_EXTERN void matsetvaluesblocked4_(Mat *AA,PetscInt *mm,const PetscInt im[],PetscInt *nn,const PetscInt in[],const PetscScalar v[]) 896 { 897 Mat A = *AA; 898 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 899 PetscInt *rp,k,low,high,t,ii,jj,row,nrow,i,col,l,N,m = *mm,n = *nn; 900 PetscInt *ai =a->i,*ailen=a->ilen; 901 PetscInt *aj =a->j,stepval,lastcol = -1; 902 const PetscScalar *value = v; 903 MatScalar *ap,*aa = a->a,*bap; 904 905 PetscFunctionBegin; 906 if (A->rmap->bs != 4) SETERRABORT(PetscObjectComm((PetscObject)A),PETSC_ERR_ARG_WRONG,"Can only be called with a block size of 4"); 907 stepval = (n-1)*4; 908 for (k=0; k<m; k++) { /* loop over added rows */ 909 row = im[k]; 910 rp = aj + ai[row]; 911 ap = aa + 16*ai[row]; 912 nrow = ailen[row]; 913 low = 0; 914 high = nrow; 915 for (l=0; l<n; l++) { /* loop over added columns */ 916 col = in[l]; 917 if (col <= lastcol) low = 0; 918 else high = nrow; 919 lastcol = col; 920 value = v + k*(stepval+4 + l)*4; 921 while (high-low > 7) { 922 t = (low+high)/2; 923 if (rp[t] > col) high = t; 924 else low = t; 925 } 926 for (i=low; i<high; i++) { 927 if (rp[i] > col) break; 928 if (rp[i] == col) { 929 bap = ap + 16*i; 930 for (ii=0; ii<4; ii++,value+=stepval) { 931 for (jj=ii; jj<16; jj+=4) { 932 bap[jj] += *value++; 933 } 934 } 935 goto noinsert2; 936 } 937 } 938 N = nrow++ - 1; 939 high++; /* added new column index thus must search to one higher than before */ 940 /* shift up all the later entries in this row */ 941 for (ii=N; ii>=i; ii--) { 942 rp[ii+1] = rp[ii]; 943 PetscMemcpy(ap+16*(ii+1),ap+16*(ii),16*sizeof(MatScalar)); 944 } 945 if (N >= i) { 946 PetscMemzero(ap+16*i,16*sizeof(MatScalar)); 947 } 948 rp[i] = col; 949 bap = ap + 16*i; 950 for (ii=0; ii<4; ii++,value+=stepval) { 951 for (jj=ii; jj<16; jj+=4) { 952 bap[jj] = *value++; 953 } 954 } 955 noinsert2:; 956 low = i; 957 } 958 ailen[row] = nrow; 959 } 960 PetscFunctionReturnVoid(); 961 } 962 963 #if defined(PETSC_HAVE_FORTRAN_CAPS) 964 #define matsetvalues4_ MATSETVALUES4 965 #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE) 966 #define matsetvalues4_ matsetvalues4 967 #endif 968 969 #undef __FUNCT__ 970 #define __FUNCT__ "MatSetValues4_" 971 PETSC_EXTERN void matsetvalues4_(Mat *AA,PetscInt *mm,PetscInt *im,PetscInt *nn,PetscInt *in,PetscScalar *v) 972 { 973 Mat A = *AA; 974 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 975 PetscInt *rp,k,low,high,t,ii,row,nrow,i,col,l,N,n = *nn,m = *mm; 976 PetscInt *ai=a->i,*ailen=a->ilen; 977 PetscInt *aj=a->j,brow,bcol; 978 PetscInt ridx,cidx,lastcol = -1; 979 MatScalar *ap,value,*aa=a->a,*bap; 980 981 PetscFunctionBegin; 982 for (k=0; k<m; k++) { /* loop over added rows */ 983 row = im[k]; brow = row/4; 984 rp = aj + ai[brow]; 985 ap = aa + 16*ai[brow]; 986 nrow = ailen[brow]; 987 low = 0; 988 high = nrow; 989 for (l=0; l<n; l++) { /* loop over added columns */ 990 col = in[l]; bcol = col/4; 991 ridx = row % 4; cidx = col % 4; 992 value = v[l + k*n]; 993 if (col <= lastcol) low = 0; 994 else high = nrow; 995 lastcol = col; 996 while (high-low > 7) { 997 t = (low+high)/2; 998 if (rp[t] > bcol) high = t; 999 else low = t; 1000 } 1001 for (i=low; i<high; i++) { 1002 if (rp[i] > bcol) break; 1003 if (rp[i] == bcol) { 1004 bap = ap + 16*i + 4*cidx + ridx; 1005 *bap += value; 1006 goto noinsert1; 1007 } 1008 } 1009 N = nrow++ - 1; 1010 high++; /* added new column thus must search to one higher than before */ 1011 /* shift up all the later entries in this row */ 1012 for (ii=N; ii>=i; ii--) { 1013 rp[ii+1] = rp[ii]; 1014 PetscMemcpy(ap+16*(ii+1),ap+16*(ii),16*sizeof(MatScalar)); 1015 } 1016 if (N>=i) { 1017 PetscMemzero(ap+16*i,16*sizeof(MatScalar)); 1018 } 1019 rp[i] = bcol; 1020 ap[16*i + 4*cidx + ridx] = value; 1021 noinsert1:; 1022 low = i; 1023 } 1024 ailen[brow] = nrow; 1025 } 1026 PetscFunctionReturnVoid(); 1027 } 1028 1029 /* 1030 Checks for missing diagonals 1031 */ 1032 #undef __FUNCT__ 1033 #define __FUNCT__ "MatMissingDiagonal_SeqBAIJ" 1034 PetscErrorCode MatMissingDiagonal_SeqBAIJ(Mat A,PetscBool *missing,PetscInt *d) 1035 { 1036 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1037 PetscErrorCode ierr; 1038 PetscInt *diag,*jj = a->j,i; 1039 1040 PetscFunctionBegin; 1041 ierr = MatMarkDiagonal_SeqBAIJ(A);CHKERRQ(ierr); 1042 *missing = PETSC_FALSE; 1043 if (A->rmap->n > 0 && !jj) { 1044 *missing = PETSC_TRUE; 1045 if (d) *d = 0; 1046 PetscInfo(A,"Matrix has no entries therefore is missing diagonal"); 1047 } else { 1048 diag = a->diag; 1049 for (i=0; i<a->mbs; i++) { 1050 if (jj[diag[i]] != i) { 1051 *missing = PETSC_TRUE; 1052 if (d) *d = i; 1053 PetscInfo1(A,"Matrix is missing block diagonal number %D",i); 1054 break; 1055 } 1056 } 1057 } 1058 PetscFunctionReturn(0); 1059 } 1060 1061 #undef __FUNCT__ 1062 #define __FUNCT__ "MatMarkDiagonal_SeqBAIJ" 1063 PetscErrorCode MatMarkDiagonal_SeqBAIJ(Mat A) 1064 { 1065 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1066 PetscErrorCode ierr; 1067 PetscInt i,j,m = a->mbs; 1068 1069 PetscFunctionBegin; 1070 if (!a->diag) { 1071 ierr = PetscMalloc(m*sizeof(PetscInt),&a->diag);CHKERRQ(ierr); 1072 ierr = PetscLogObjectMemory((PetscObject)A,m*sizeof(PetscInt));CHKERRQ(ierr); 1073 a->free_diag = PETSC_TRUE; 1074 } 1075 for (i=0; i<m; i++) { 1076 a->diag[i] = a->i[i+1]; 1077 for (j=a->i[i]; j<a->i[i+1]; j++) { 1078 if (a->j[j] == i) { 1079 a->diag[i] = j; 1080 break; 1081 } 1082 } 1083 } 1084 PetscFunctionReturn(0); 1085 } 1086 1087 1088 #undef __FUNCT__ 1089 #define __FUNCT__ "MatGetRowIJ_SeqBAIJ" 1090 static PetscErrorCode MatGetRowIJ_SeqBAIJ(Mat A,PetscInt oshift,PetscBool symmetric,PetscBool blockcompressed,PetscInt *nn,const PetscInt *inia[],const PetscInt *inja[],PetscBool *done) 1091 { 1092 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1093 PetscErrorCode ierr; 1094 PetscInt i,j,n = a->mbs,nz = a->i[n],*tia,*tja,bs = A->rmap->bs,k,l,cnt; 1095 PetscInt **ia = (PetscInt**)inia,**ja = (PetscInt**)inja; 1096 1097 PetscFunctionBegin; 1098 *nn = n; 1099 if (!ia) PetscFunctionReturn(0); 1100 if (symmetric) { 1101 ierr = MatToSymmetricIJ_SeqAIJ(n,a->i,a->j,0,0,&tia,&tja);CHKERRQ(ierr); 1102 nz = tia[n]; 1103 } else { 1104 tia = a->i; tja = a->j; 1105 } 1106 1107 if (!blockcompressed && bs > 1) { 1108 (*nn) *= bs; 1109 /* malloc & create the natural set of indices */ 1110 ierr = PetscMalloc((n+1)*bs*sizeof(PetscInt),ia);CHKERRQ(ierr); 1111 if (n) { 1112 (*ia)[0] = 0; 1113 for (j=1; j<bs; j++) { 1114 (*ia)[j] = (tia[1]-tia[0])*bs+(*ia)[j-1]; 1115 } 1116 } 1117 1118 for (i=1; i<n; i++) { 1119 (*ia)[i*bs] = (tia[i]-tia[i-1])*bs + (*ia)[i*bs-1]; 1120 for (j=1; j<bs; j++) { 1121 (*ia)[i*bs+j] = (tia[i+1]-tia[i])*bs + (*ia)[i*bs+j-1]; 1122 } 1123 } 1124 if (n) { 1125 (*ia)[n*bs] = (tia[n]-tia[n-1])*bs + (*ia)[n*bs-1]; 1126 } 1127 1128 if (inja) { 1129 ierr = PetscMalloc(nz*bs*bs*sizeof(PetscInt),ja);CHKERRQ(ierr); 1130 cnt = 0; 1131 for (i=0; i<n; i++) { 1132 for (j=0; j<bs; j++) { 1133 for (k=tia[i]; k<tia[i+1]; k++) { 1134 for (l=0; l<bs; l++) { 1135 (*ja)[cnt++] = bs*tja[k] + l; 1136 } 1137 } 1138 } 1139 } 1140 } 1141 1142 if (symmetric) { /* deallocate memory allocated in MatToSymmetricIJ_SeqAIJ() */ 1143 ierr = PetscFree(tia);CHKERRQ(ierr); 1144 ierr = PetscFree(tja);CHKERRQ(ierr); 1145 } 1146 } else if (oshift == 1) { 1147 if (symmetric) { 1148 nz = tia[A->rmap->n/bs]; 1149 /* add 1 to i and j indices */ 1150 for (i=0; i<A->rmap->n/bs+1; i++) tia[i] = tia[i] + 1; 1151 *ia = tia; 1152 if (ja) { 1153 for (i=0; i<nz; i++) tja[i] = tja[i] + 1; 1154 *ja = tja; 1155 } 1156 } else { 1157 nz = a->i[A->rmap->n/bs]; 1158 /* malloc space and add 1 to i and j indices */ 1159 ierr = PetscMalloc((A->rmap->n/bs+1)*sizeof(PetscInt),ia);CHKERRQ(ierr); 1160 for (i=0; i<A->rmap->n/bs+1; i++) (*ia)[i] = a->i[i] + 1; 1161 if (ja) { 1162 ierr = PetscMalloc(nz*sizeof(PetscInt),ja);CHKERRQ(ierr); 1163 for (i=0; i<nz; i++) (*ja)[i] = a->j[i] + 1; 1164 } 1165 } 1166 } else { 1167 *ia = tia; 1168 if (ja) *ja = tja; 1169 } 1170 PetscFunctionReturn(0); 1171 } 1172 1173 #undef __FUNCT__ 1174 #define __FUNCT__ "MatRestoreRowIJ_SeqBAIJ" 1175 static PetscErrorCode MatRestoreRowIJ_SeqBAIJ(Mat A,PetscInt oshift,PetscBool symmetric,PetscBool blockcompressed,PetscInt *nn,const PetscInt *ia[],const PetscInt *ja[],PetscBool *done) 1176 { 1177 PetscErrorCode ierr; 1178 1179 PetscFunctionBegin; 1180 if (!ia) PetscFunctionReturn(0); 1181 if ((!blockcompressed && A->rmap->bs > 1) || (symmetric || oshift == 1)) { 1182 ierr = PetscFree(*ia);CHKERRQ(ierr); 1183 if (ja) {ierr = PetscFree(*ja);CHKERRQ(ierr);} 1184 } 1185 PetscFunctionReturn(0); 1186 } 1187 1188 #undef __FUNCT__ 1189 #define __FUNCT__ "MatDestroy_SeqBAIJ" 1190 PetscErrorCode MatDestroy_SeqBAIJ(Mat A) 1191 { 1192 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1193 PetscErrorCode ierr; 1194 1195 PetscFunctionBegin; 1196 #if defined(PETSC_USE_LOG) 1197 PetscLogObjectState((PetscObject)A,"Rows=%D, Cols=%D, NZ=%D",A->rmap->N,A->cmap->n,a->nz); 1198 #endif 1199 ierr = MatSeqXAIJFreeAIJ(A,&a->a,&a->j,&a->i);CHKERRQ(ierr); 1200 ierr = ISDestroy(&a->row);CHKERRQ(ierr); 1201 ierr = ISDestroy(&a->col);CHKERRQ(ierr); 1202 if (a->free_diag) {ierr = PetscFree(a->diag);CHKERRQ(ierr);} 1203 ierr = PetscFree(a->idiag);CHKERRQ(ierr); 1204 if (a->free_imax_ilen) {ierr = PetscFree2(a->imax,a->ilen);CHKERRQ(ierr);} 1205 ierr = PetscFree(a->solve_work);CHKERRQ(ierr); 1206 ierr = PetscFree(a->mult_work);CHKERRQ(ierr); 1207 ierr = PetscFree(a->sor_work);CHKERRQ(ierr); 1208 ierr = ISDestroy(&a->icol);CHKERRQ(ierr); 1209 ierr = PetscFree(a->saved_values);CHKERRQ(ierr); 1210 ierr = PetscFree(a->xtoy);CHKERRQ(ierr); 1211 ierr = PetscFree2(a->compressedrow.i,a->compressedrow.rindex);CHKERRQ(ierr); 1212 1213 ierr = MatDestroy(&a->sbaijMat);CHKERRQ(ierr); 1214 ierr = MatDestroy(&a->parent);CHKERRQ(ierr); 1215 ierr = PetscFree(A->data);CHKERRQ(ierr); 1216 1217 ierr = PetscObjectChangeTypeName((PetscObject)A,0);CHKERRQ(ierr); 1218 ierr = PetscObjectComposeFunction((PetscObject)A,"MatInvertBlockDiagonal_C",NULL);CHKERRQ(ierr); 1219 ierr = PetscObjectComposeFunction((PetscObject)A,"MatStoreValues_C",NULL);CHKERRQ(ierr); 1220 ierr = PetscObjectComposeFunction((PetscObject)A,"MatRetrieveValues_C",NULL);CHKERRQ(ierr); 1221 ierr = PetscObjectComposeFunction((PetscObject)A,"MatSeqBAIJSetColumnIndices_C",NULL);CHKERRQ(ierr); 1222 ierr = PetscObjectComposeFunction((PetscObject)A,"MatConvert_seqbaij_seqaij_C",NULL);CHKERRQ(ierr); 1223 ierr = PetscObjectComposeFunction((PetscObject)A,"MatConvert_seqbaij_seqsbaij_C",NULL);CHKERRQ(ierr); 1224 ierr = PetscObjectComposeFunction((PetscObject)A,"MatSeqBAIJSetPreallocation_C",NULL);CHKERRQ(ierr); 1225 ierr = PetscObjectComposeFunction((PetscObject)A,"MatSeqBAIJSetPreallocationCSR_C",NULL);CHKERRQ(ierr); 1226 ierr = PetscObjectComposeFunction((PetscObject)A,"MatConvert_seqbaij_seqbstrm_C",NULL);CHKERRQ(ierr); 1227 ierr = PetscObjectComposeFunction((PetscObject)A,"MatIsTranspose_C",NULL);CHKERRQ(ierr); 1228 PetscFunctionReturn(0); 1229 } 1230 1231 #undef __FUNCT__ 1232 #define __FUNCT__ "MatSetOption_SeqBAIJ" 1233 PetscErrorCode MatSetOption_SeqBAIJ(Mat A,MatOption op,PetscBool flg) 1234 { 1235 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1236 PetscErrorCode ierr; 1237 1238 PetscFunctionBegin; 1239 switch (op) { 1240 case MAT_ROW_ORIENTED: 1241 a->roworiented = flg; 1242 break; 1243 case MAT_KEEP_NONZERO_PATTERN: 1244 a->keepnonzeropattern = flg; 1245 break; 1246 case MAT_NEW_NONZERO_LOCATIONS: 1247 a->nonew = (flg ? 0 : 1); 1248 break; 1249 case MAT_NEW_NONZERO_LOCATION_ERR: 1250 a->nonew = (flg ? -1 : 0); 1251 break; 1252 case MAT_NEW_NONZERO_ALLOCATION_ERR: 1253 a->nonew = (flg ? -2 : 0); 1254 break; 1255 case MAT_UNUSED_NONZERO_LOCATION_ERR: 1256 a->nounused = (flg ? -1 : 0); 1257 break; 1258 case MAT_CHECK_COMPRESSED_ROW: 1259 a->compressedrow.check = flg; 1260 break; 1261 case MAT_NEW_DIAGONALS: 1262 case MAT_IGNORE_OFF_PROC_ENTRIES: 1263 case MAT_USE_HASH_TABLE: 1264 ierr = PetscInfo1(A,"Option %s ignored\n",MatOptions[op]);CHKERRQ(ierr); 1265 break; 1266 case MAT_SPD: 1267 case MAT_SYMMETRIC: 1268 case MAT_STRUCTURALLY_SYMMETRIC: 1269 case MAT_HERMITIAN: 1270 case MAT_SYMMETRY_ETERNAL: 1271 /* These options are handled directly by MatSetOption() */ 1272 break; 1273 default: 1274 SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"unknown option %d",op); 1275 } 1276 PetscFunctionReturn(0); 1277 } 1278 1279 #undef __FUNCT__ 1280 #define __FUNCT__ "MatGetRow_SeqBAIJ" 1281 PetscErrorCode MatGetRow_SeqBAIJ(Mat A,PetscInt row,PetscInt *nz,PetscInt **idx,PetscScalar **v) 1282 { 1283 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1284 PetscErrorCode ierr; 1285 PetscInt itmp,i,j,k,M,*ai,*aj,bs,bn,bp,*idx_i,bs2; 1286 MatScalar *aa,*aa_i; 1287 PetscScalar *v_i; 1288 1289 PetscFunctionBegin; 1290 bs = A->rmap->bs; 1291 ai = a->i; 1292 aj = a->j; 1293 aa = a->a; 1294 bs2 = a->bs2; 1295 1296 if (row < 0 || row >= A->rmap->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Row %D out of range", row); 1297 1298 bn = row/bs; /* Block number */ 1299 bp = row % bs; /* Block Position */ 1300 M = ai[bn+1] - ai[bn]; 1301 *nz = bs*M; 1302 1303 if (v) { 1304 *v = 0; 1305 if (*nz) { 1306 ierr = PetscMalloc((*nz)*sizeof(PetscScalar),v);CHKERRQ(ierr); 1307 for (i=0; i<M; i++) { /* for each block in the block row */ 1308 v_i = *v + i*bs; 1309 aa_i = aa + bs2*(ai[bn] + i); 1310 for (j=bp,k=0; j<bs2; j+=bs,k++) v_i[k] = aa_i[j]; 1311 } 1312 } 1313 } 1314 1315 if (idx) { 1316 *idx = 0; 1317 if (*nz) { 1318 ierr = PetscMalloc((*nz)*sizeof(PetscInt),idx);CHKERRQ(ierr); 1319 for (i=0; i<M; i++) { /* for each block in the block row */ 1320 idx_i = *idx + i*bs; 1321 itmp = bs*aj[ai[bn] + i]; 1322 for (j=0; j<bs; j++) idx_i[j] = itmp++; 1323 } 1324 } 1325 } 1326 PetscFunctionReturn(0); 1327 } 1328 1329 #undef __FUNCT__ 1330 #define __FUNCT__ "MatRestoreRow_SeqBAIJ" 1331 PetscErrorCode MatRestoreRow_SeqBAIJ(Mat A,PetscInt row,PetscInt *nz,PetscInt **idx,PetscScalar **v) 1332 { 1333 PetscErrorCode ierr; 1334 1335 PetscFunctionBegin; 1336 if (idx) {ierr = PetscFree(*idx);CHKERRQ(ierr);} 1337 if (v) {ierr = PetscFree(*v);CHKERRQ(ierr);} 1338 PetscFunctionReturn(0); 1339 } 1340 1341 extern PetscErrorCode MatSetValues_SeqBAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],const PetscScalar[],InsertMode); 1342 1343 #undef __FUNCT__ 1344 #define __FUNCT__ "MatTranspose_SeqBAIJ" 1345 PetscErrorCode MatTranspose_SeqBAIJ(Mat A,MatReuse reuse,Mat *B) 1346 { 1347 Mat_SeqBAIJ *a=(Mat_SeqBAIJ*)A->data; 1348 Mat C; 1349 PetscErrorCode ierr; 1350 PetscInt i,j,k,*aj=a->j,*ai=a->i,bs=A->rmap->bs,mbs=a->mbs,nbs=a->nbs,len,*col; 1351 PetscInt *rows,*cols,bs2=a->bs2; 1352 MatScalar *array; 1353 1354 PetscFunctionBegin; 1355 if (reuse == MAT_REUSE_MATRIX && A == *B && mbs != nbs) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Square matrix only for in-place"); 1356 if (reuse == MAT_INITIAL_MATRIX || A == *B) { 1357 ierr = PetscMalloc((1+nbs)*sizeof(PetscInt),&col);CHKERRQ(ierr); 1358 ierr = PetscMemzero(col,(1+nbs)*sizeof(PetscInt));CHKERRQ(ierr); 1359 1360 for (i=0; i<ai[mbs]; i++) col[aj[i]] += 1; 1361 ierr = MatCreate(PetscObjectComm((PetscObject)A),&C);CHKERRQ(ierr); 1362 ierr = MatSetSizes(C,A->cmap->n,A->rmap->N,A->cmap->n,A->rmap->N);CHKERRQ(ierr); 1363 ierr = MatSetType(C,((PetscObject)A)->type_name);CHKERRQ(ierr); 1364 ierr = MatSeqBAIJSetPreallocation_SeqBAIJ(C,bs,0,col);CHKERRQ(ierr); 1365 ierr = PetscFree(col);CHKERRQ(ierr); 1366 } else { 1367 C = *B; 1368 } 1369 1370 array = a->a; 1371 ierr = PetscMalloc2(bs,PetscInt,&rows,bs,PetscInt,&cols);CHKERRQ(ierr); 1372 for (i=0; i<mbs; i++) { 1373 cols[0] = i*bs; 1374 for (k=1; k<bs; k++) cols[k] = cols[k-1] + 1; 1375 len = ai[i+1] - ai[i]; 1376 for (j=0; j<len; j++) { 1377 rows[0] = (*aj++)*bs; 1378 for (k=1; k<bs; k++) rows[k] = rows[k-1] + 1; 1379 ierr = MatSetValues_SeqBAIJ(C,bs,rows,bs,cols,array,INSERT_VALUES);CHKERRQ(ierr); 1380 array += bs2; 1381 } 1382 } 1383 ierr = PetscFree2(rows,cols);CHKERRQ(ierr); 1384 1385 ierr = MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1386 ierr = MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1387 1388 if (reuse == MAT_INITIAL_MATRIX || *B != A) { 1389 *B = C; 1390 } else { 1391 ierr = MatHeaderMerge(A,C);CHKERRQ(ierr); 1392 } 1393 PetscFunctionReturn(0); 1394 } 1395 1396 #undef __FUNCT__ 1397 #define __FUNCT__ "MatIsTranspose_SeqBAIJ" 1398 PetscErrorCode MatIsTranspose_SeqBAIJ(Mat A,Mat B,PetscReal tol,PetscBool *f) 1399 { 1400 PetscErrorCode ierr; 1401 Mat Btrans; 1402 1403 PetscFunctionBegin; 1404 *f = PETSC_FALSE; 1405 ierr = MatTranspose_SeqBAIJ(A,MAT_INITIAL_MATRIX,&Btrans);CHKERRQ(ierr); 1406 ierr = MatEqual_SeqBAIJ(B,Btrans,f);CHKERRQ(ierr); 1407 ierr = MatDestroy(&Btrans);CHKERRQ(ierr); 1408 PetscFunctionReturn(0); 1409 } 1410 1411 #undef __FUNCT__ 1412 #define __FUNCT__ "MatView_SeqBAIJ_Binary" 1413 static PetscErrorCode MatView_SeqBAIJ_Binary(Mat A,PetscViewer viewer) 1414 { 1415 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1416 PetscErrorCode ierr; 1417 PetscInt i,*col_lens,bs = A->rmap->bs,count,*jj,j,k,l,bs2=a->bs2; 1418 int fd; 1419 PetscScalar *aa; 1420 FILE *file; 1421 1422 PetscFunctionBegin; 1423 ierr = PetscViewerBinaryGetDescriptor(viewer,&fd);CHKERRQ(ierr); 1424 ierr = PetscMalloc((4+A->rmap->N)*sizeof(PetscInt),&col_lens);CHKERRQ(ierr); 1425 col_lens[0] = MAT_FILE_CLASSID; 1426 1427 col_lens[1] = A->rmap->N; 1428 col_lens[2] = A->cmap->n; 1429 col_lens[3] = a->nz*bs2; 1430 1431 /* store lengths of each row and write (including header) to file */ 1432 count = 0; 1433 for (i=0; i<a->mbs; i++) { 1434 for (j=0; j<bs; j++) { 1435 col_lens[4+count++] = bs*(a->i[i+1] - a->i[i]); 1436 } 1437 } 1438 ierr = PetscBinaryWrite(fd,col_lens,4+A->rmap->N,PETSC_INT,PETSC_TRUE);CHKERRQ(ierr); 1439 ierr = PetscFree(col_lens);CHKERRQ(ierr); 1440 1441 /* store column indices (zero start index) */ 1442 ierr = PetscMalloc((a->nz+1)*bs2*sizeof(PetscInt),&jj);CHKERRQ(ierr); 1443 count = 0; 1444 for (i=0; i<a->mbs; i++) { 1445 for (j=0; j<bs; j++) { 1446 for (k=a->i[i]; k<a->i[i+1]; k++) { 1447 for (l=0; l<bs; l++) { 1448 jj[count++] = bs*a->j[k] + l; 1449 } 1450 } 1451 } 1452 } 1453 ierr = PetscBinaryWrite(fd,jj,bs2*a->nz,PETSC_INT,PETSC_FALSE);CHKERRQ(ierr); 1454 ierr = PetscFree(jj);CHKERRQ(ierr); 1455 1456 /* store nonzero values */ 1457 ierr = PetscMalloc((a->nz+1)*bs2*sizeof(PetscScalar),&aa);CHKERRQ(ierr); 1458 count = 0; 1459 for (i=0; i<a->mbs; i++) { 1460 for (j=0; j<bs; j++) { 1461 for (k=a->i[i]; k<a->i[i+1]; k++) { 1462 for (l=0; l<bs; l++) { 1463 aa[count++] = a->a[bs2*k + l*bs + j]; 1464 } 1465 } 1466 } 1467 } 1468 ierr = PetscBinaryWrite(fd,aa,bs2*a->nz,PETSC_SCALAR,PETSC_FALSE);CHKERRQ(ierr); 1469 ierr = PetscFree(aa);CHKERRQ(ierr); 1470 1471 ierr = PetscViewerBinaryGetInfoPointer(viewer,&file);CHKERRQ(ierr); 1472 if (file) { 1473 fprintf(file,"-matload_block_size %d\n",(int)A->rmap->bs); 1474 } 1475 PetscFunctionReturn(0); 1476 } 1477 1478 #undef __FUNCT__ 1479 #define __FUNCT__ "MatView_SeqBAIJ_ASCII" 1480 static PetscErrorCode MatView_SeqBAIJ_ASCII(Mat A,PetscViewer viewer) 1481 { 1482 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1483 PetscErrorCode ierr; 1484 PetscInt i,j,bs = A->rmap->bs,k,l,bs2=a->bs2; 1485 PetscViewerFormat format; 1486 1487 PetscFunctionBegin; 1488 ierr = PetscViewerGetFormat(viewer,&format);CHKERRQ(ierr); 1489 if (format == PETSC_VIEWER_ASCII_INFO || format == PETSC_VIEWER_ASCII_INFO_DETAIL) { 1490 ierr = PetscViewerASCIIPrintf(viewer," block size is %D\n",bs);CHKERRQ(ierr); 1491 } else if (format == PETSC_VIEWER_ASCII_MATLAB) { 1492 Mat aij; 1493 ierr = MatConvert(A,MATSEQAIJ,MAT_INITIAL_MATRIX,&aij);CHKERRQ(ierr); 1494 ierr = MatView(aij,viewer);CHKERRQ(ierr); 1495 ierr = MatDestroy(&aij);CHKERRQ(ierr); 1496 } else if (format == PETSC_VIEWER_ASCII_FACTOR_INFO) { 1497 PetscFunctionReturn(0); 1498 } else if (format == PETSC_VIEWER_ASCII_COMMON) { 1499 ierr = PetscViewerASCIIUseTabs(viewer,PETSC_FALSE);CHKERRQ(ierr); 1500 ierr = PetscObjectPrintClassNamePrefixType((PetscObject)A,viewer);CHKERRQ(ierr); 1501 for (i=0; i<a->mbs; i++) { 1502 for (j=0; j<bs; j++) { 1503 ierr = PetscViewerASCIIPrintf(viewer,"row %D:",i*bs+j);CHKERRQ(ierr); 1504 for (k=a->i[i]; k<a->i[i+1]; k++) { 1505 for (l=0; l<bs; l++) { 1506 #if defined(PETSC_USE_COMPLEX) 1507 if (PetscImaginaryPart(a->a[bs2*k + l*bs + j]) > 0.0 && PetscRealPart(a->a[bs2*k + l*bs + j]) != 0.0) { 1508 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G + %Gi) ",bs*a->j[k]+l, 1509 PetscRealPart(a->a[bs2*k + l*bs + j]),PetscImaginaryPart(a->a[bs2*k + l*bs + j]));CHKERRQ(ierr); 1510 } else if (PetscImaginaryPart(a->a[bs2*k + l*bs + j]) < 0.0 && PetscRealPart(a->a[bs2*k + l*bs + j]) != 0.0) { 1511 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G - %Gi) ",bs*a->j[k]+l, 1512 PetscRealPart(a->a[bs2*k + l*bs + j]),-PetscImaginaryPart(a->a[bs2*k + l*bs + j]));CHKERRQ(ierr); 1513 } else if (PetscRealPart(a->a[bs2*k + l*bs + j]) != 0.0) { 1514 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G) ",bs*a->j[k]+l,PetscRealPart(a->a[bs2*k + l*bs + j]));CHKERRQ(ierr); 1515 } 1516 #else 1517 if (a->a[bs2*k + l*bs + j] != 0.0) { 1518 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G) ",bs*a->j[k]+l,a->a[bs2*k + l*bs + j]);CHKERRQ(ierr); 1519 } 1520 #endif 1521 } 1522 } 1523 ierr = PetscViewerASCIIPrintf(viewer,"\n");CHKERRQ(ierr); 1524 } 1525 } 1526 ierr = PetscViewerASCIIUseTabs(viewer,PETSC_TRUE);CHKERRQ(ierr); 1527 } else { 1528 ierr = PetscViewerASCIIUseTabs(viewer,PETSC_FALSE);CHKERRQ(ierr); 1529 ierr = PetscObjectPrintClassNamePrefixType((PetscObject)A,viewer);CHKERRQ(ierr); 1530 for (i=0; i<a->mbs; i++) { 1531 for (j=0; j<bs; j++) { 1532 ierr = PetscViewerASCIIPrintf(viewer,"row %D:",i*bs+j);CHKERRQ(ierr); 1533 for (k=a->i[i]; k<a->i[i+1]; k++) { 1534 for (l=0; l<bs; l++) { 1535 #if defined(PETSC_USE_COMPLEX) 1536 if (PetscImaginaryPart(a->a[bs2*k + l*bs + j]) > 0.0) { 1537 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G + %G i) ",bs*a->j[k]+l, 1538 PetscRealPart(a->a[bs2*k + l*bs + j]),PetscImaginaryPart(a->a[bs2*k + l*bs + j]));CHKERRQ(ierr); 1539 } else if (PetscImaginaryPart(a->a[bs2*k + l*bs + j]) < 0.0) { 1540 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G - %G i) ",bs*a->j[k]+l, 1541 PetscRealPart(a->a[bs2*k + l*bs + j]),-PetscImaginaryPart(a->a[bs2*k + l*bs + j]));CHKERRQ(ierr); 1542 } else { 1543 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G) ",bs*a->j[k]+l,PetscRealPart(a->a[bs2*k + l*bs + j]));CHKERRQ(ierr); 1544 } 1545 #else 1546 ierr = PetscViewerASCIIPrintf(viewer," (%D, %G) ",bs*a->j[k]+l,a->a[bs2*k + l*bs + j]);CHKERRQ(ierr); 1547 #endif 1548 } 1549 } 1550 ierr = PetscViewerASCIIPrintf(viewer,"\n");CHKERRQ(ierr); 1551 } 1552 } 1553 ierr = PetscViewerASCIIUseTabs(viewer,PETSC_TRUE);CHKERRQ(ierr); 1554 } 1555 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 1556 PetscFunctionReturn(0); 1557 } 1558 1559 #include <petscdraw.h> 1560 #undef __FUNCT__ 1561 #define __FUNCT__ "MatView_SeqBAIJ_Draw_Zoom" 1562 static PetscErrorCode MatView_SeqBAIJ_Draw_Zoom(PetscDraw draw,void *Aa) 1563 { 1564 Mat A = (Mat) Aa; 1565 Mat_SeqBAIJ *a=(Mat_SeqBAIJ*)A->data; 1566 PetscErrorCode ierr; 1567 PetscInt row,i,j,k,l,mbs=a->mbs,color,bs=A->rmap->bs,bs2=a->bs2; 1568 PetscReal xl,yl,xr,yr,x_l,x_r,y_l,y_r; 1569 MatScalar *aa; 1570 PetscViewer viewer; 1571 PetscViewerFormat format; 1572 1573 PetscFunctionBegin; 1574 ierr = PetscObjectQuery((PetscObject)A,"Zoomviewer",(PetscObject*)&viewer);CHKERRQ(ierr); 1575 ierr = PetscViewerGetFormat(viewer,&format);CHKERRQ(ierr); 1576 1577 ierr = PetscDrawGetCoordinates(draw,&xl,&yl,&xr,&yr);CHKERRQ(ierr); 1578 1579 /* loop over matrix elements drawing boxes */ 1580 1581 if (format != PETSC_VIEWER_DRAW_CONTOUR) { 1582 color = PETSC_DRAW_BLUE; 1583 for (i=0,row=0; i<mbs; i++,row+=bs) { 1584 for (j=a->i[i]; j<a->i[i+1]; j++) { 1585 y_l = A->rmap->N - row - 1.0; y_r = y_l + 1.0; 1586 x_l = a->j[j]*bs; x_r = x_l + 1.0; 1587 aa = a->a + j*bs2; 1588 for (k=0; k<bs; k++) { 1589 for (l=0; l<bs; l++) { 1590 if (PetscRealPart(*aa++) >= 0.) continue; 1591 ierr = PetscDrawRectangle(draw,x_l+k,y_l-l,x_r+k,y_r-l,color,color,color,color);CHKERRQ(ierr); 1592 } 1593 } 1594 } 1595 } 1596 color = PETSC_DRAW_CYAN; 1597 for (i=0,row=0; i<mbs; i++,row+=bs) { 1598 for (j=a->i[i]; j<a->i[i+1]; j++) { 1599 y_l = A->rmap->N - row - 1.0; y_r = y_l + 1.0; 1600 x_l = a->j[j]*bs; x_r = x_l + 1.0; 1601 aa = a->a + j*bs2; 1602 for (k=0; k<bs; k++) { 1603 for (l=0; l<bs; l++) { 1604 if (PetscRealPart(*aa++) != 0.) continue; 1605 ierr = PetscDrawRectangle(draw,x_l+k,y_l-l,x_r+k,y_r-l,color,color,color,color);CHKERRQ(ierr); 1606 } 1607 } 1608 } 1609 } 1610 color = PETSC_DRAW_RED; 1611 for (i=0,row=0; i<mbs; i++,row+=bs) { 1612 for (j=a->i[i]; j<a->i[i+1]; j++) { 1613 y_l = A->rmap->N - row - 1.0; y_r = y_l + 1.0; 1614 x_l = a->j[j]*bs; x_r = x_l + 1.0; 1615 aa = a->a + j*bs2; 1616 for (k=0; k<bs; k++) { 1617 for (l=0; l<bs; l++) { 1618 if (PetscRealPart(*aa++) <= 0.) continue; 1619 ierr = PetscDrawRectangle(draw,x_l+k,y_l-l,x_r+k,y_r-l,color,color,color,color);CHKERRQ(ierr); 1620 } 1621 } 1622 } 1623 } 1624 } else { 1625 /* use contour shading to indicate magnitude of values */ 1626 /* first determine max of all nonzero values */ 1627 PetscDraw popup; 1628 PetscReal scale,maxv = 0.0; 1629 1630 for (i=0; i<a->nz*a->bs2; i++) { 1631 if (PetscAbsScalar(a->a[i]) > maxv) maxv = PetscAbsScalar(a->a[i]); 1632 } 1633 scale = (245.0 - PETSC_DRAW_BASIC_COLORS)/maxv; 1634 ierr = PetscDrawGetPopup(draw,&popup);CHKERRQ(ierr); 1635 if (popup) { 1636 ierr = PetscDrawScalePopup(popup,0.0,maxv);CHKERRQ(ierr); 1637 } 1638 for (i=0,row=0; i<mbs; i++,row+=bs) { 1639 for (j=a->i[i]; j<a->i[i+1]; j++) { 1640 y_l = A->rmap->N - row - 1.0; y_r = y_l + 1.0; 1641 x_l = a->j[j]*bs; x_r = x_l + 1.0; 1642 aa = a->a + j*bs2; 1643 for (k=0; k<bs; k++) { 1644 for (l=0; l<bs; l++) { 1645 color = PETSC_DRAW_BASIC_COLORS + (PetscInt)(scale*PetscAbsScalar(*aa++)); 1646 ierr = PetscDrawRectangle(draw,x_l+k,y_l-l,x_r+k,y_r-l,color,color,color,color);CHKERRQ(ierr); 1647 } 1648 } 1649 } 1650 } 1651 } 1652 PetscFunctionReturn(0); 1653 } 1654 1655 #undef __FUNCT__ 1656 #define __FUNCT__ "MatView_SeqBAIJ_Draw" 1657 static PetscErrorCode MatView_SeqBAIJ_Draw(Mat A,PetscViewer viewer) 1658 { 1659 PetscErrorCode ierr; 1660 PetscReal xl,yl,xr,yr,w,h; 1661 PetscDraw draw; 1662 PetscBool isnull; 1663 1664 PetscFunctionBegin; 1665 ierr = PetscViewerDrawGetDraw(viewer,0,&draw);CHKERRQ(ierr); 1666 ierr = PetscDrawIsNull(draw,&isnull);CHKERRQ(ierr); if (isnull) PetscFunctionReturn(0); 1667 1668 ierr = PetscObjectCompose((PetscObject)A,"Zoomviewer",(PetscObject)viewer);CHKERRQ(ierr); 1669 xr = A->cmap->n; yr = A->rmap->N; h = yr/10.0; w = xr/10.0; 1670 xr += w; yr += h; xl = -w; yl = -h; 1671 ierr = PetscDrawSetCoordinates(draw,xl,yl,xr,yr);CHKERRQ(ierr); 1672 ierr = PetscDrawZoom(draw,MatView_SeqBAIJ_Draw_Zoom,A);CHKERRQ(ierr); 1673 ierr = PetscObjectCompose((PetscObject)A,"Zoomviewer",NULL);CHKERRQ(ierr); 1674 PetscFunctionReturn(0); 1675 } 1676 1677 #undef __FUNCT__ 1678 #define __FUNCT__ "MatView_SeqBAIJ" 1679 PetscErrorCode MatView_SeqBAIJ(Mat A,PetscViewer viewer) 1680 { 1681 PetscErrorCode ierr; 1682 PetscBool iascii,isbinary,isdraw; 1683 1684 PetscFunctionBegin; 1685 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);CHKERRQ(ierr); 1686 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary);CHKERRQ(ierr); 1687 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw);CHKERRQ(ierr); 1688 if (iascii) { 1689 ierr = MatView_SeqBAIJ_ASCII(A,viewer);CHKERRQ(ierr); 1690 } else if (isbinary) { 1691 ierr = MatView_SeqBAIJ_Binary(A,viewer);CHKERRQ(ierr); 1692 } else if (isdraw) { 1693 ierr = MatView_SeqBAIJ_Draw(A,viewer);CHKERRQ(ierr); 1694 } else { 1695 Mat B; 1696 ierr = MatConvert(A,MATSEQAIJ,MAT_INITIAL_MATRIX,&B);CHKERRQ(ierr); 1697 ierr = MatView(B,viewer);CHKERRQ(ierr); 1698 ierr = MatDestroy(&B);CHKERRQ(ierr); 1699 } 1700 PetscFunctionReturn(0); 1701 } 1702 1703 1704 #undef __FUNCT__ 1705 #define __FUNCT__ "MatGetValues_SeqBAIJ" 1706 PetscErrorCode MatGetValues_SeqBAIJ(Mat A,PetscInt m,const PetscInt im[],PetscInt n,const PetscInt in[],PetscScalar v[]) 1707 { 1708 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1709 PetscInt *rp,k,low,high,t,row,nrow,i,col,l,*aj = a->j; 1710 PetscInt *ai = a->i,*ailen = a->ilen; 1711 PetscInt brow,bcol,ridx,cidx,bs=A->rmap->bs,bs2=a->bs2; 1712 MatScalar *ap,*aa = a->a; 1713 1714 PetscFunctionBegin; 1715 for (k=0; k<m; k++) { /* loop over rows */ 1716 row = im[k]; brow = row/bs; 1717 if (row < 0) {v += n; continue;} /* SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative row"); */ 1718 if (row >= A->rmap->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Row %D too large", row); 1719 rp = aj + ai[brow]; ap = aa + bs2*ai[brow]; 1720 nrow = ailen[brow]; 1721 for (l=0; l<n; l++) { /* loop over columns */ 1722 if (in[l] < 0) {v++; continue;} /* SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative column"); */ 1723 if (in[l] >= A->cmap->n) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Column %D too large", in[l]); 1724 col = in[l]; 1725 bcol = col/bs; 1726 cidx = col%bs; 1727 ridx = row%bs; 1728 high = nrow; 1729 low = 0; /* assume unsorted */ 1730 while (high-low > 5) { 1731 t = (low+high)/2; 1732 if (rp[t] > bcol) high = t; 1733 else low = t; 1734 } 1735 for (i=low; i<high; i++) { 1736 if (rp[i] > bcol) break; 1737 if (rp[i] == bcol) { 1738 *v++ = ap[bs2*i+bs*cidx+ridx]; 1739 goto finished; 1740 } 1741 } 1742 *v++ = 0.0; 1743 finished:; 1744 } 1745 } 1746 PetscFunctionReturn(0); 1747 } 1748 1749 #undef __FUNCT__ 1750 #define __FUNCT__ "MatSetValuesBlocked_SeqBAIJ" 1751 PetscErrorCode MatSetValuesBlocked_SeqBAIJ(Mat A,PetscInt m,const PetscInt im[],PetscInt n,const PetscInt in[],const PetscScalar v[],InsertMode is) 1752 { 1753 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1754 PetscInt *rp,k,low,high,t,ii,jj,row,nrow,i,col,l,rmax,N,lastcol = -1; 1755 PetscInt *imax=a->imax,*ai=a->i,*ailen=a->ilen; 1756 PetscErrorCode ierr; 1757 PetscInt *aj =a->j,nonew=a->nonew,bs2=a->bs2,bs=A->rmap->bs,stepval; 1758 PetscBool roworiented=a->roworiented; 1759 const PetscScalar *value = v; 1760 MatScalar *ap,*aa = a->a,*bap; 1761 1762 PetscFunctionBegin; 1763 if (roworiented) { 1764 stepval = (n-1)*bs; 1765 } else { 1766 stepval = (m-1)*bs; 1767 } 1768 for (k=0; k<m; k++) { /* loop over added rows */ 1769 row = im[k]; 1770 if (row < 0) continue; 1771 #if defined(PETSC_USE_DEBUG) 1772 if (row >= a->mbs) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Row too large: row %D max %D",row,a->mbs-1); 1773 #endif 1774 rp = aj + ai[row]; 1775 ap = aa + bs2*ai[row]; 1776 rmax = imax[row]; 1777 nrow = ailen[row]; 1778 low = 0; 1779 high = nrow; 1780 for (l=0; l<n; l++) { /* loop over added columns */ 1781 if (in[l] < 0) continue; 1782 #if defined(PETSC_USE_DEBUG) 1783 if (in[l] >= a->nbs) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Column too large: col %D max %D",in[l],a->nbs-1); 1784 #endif 1785 col = in[l]; 1786 if (roworiented) { 1787 value = v + (k*(stepval+bs) + l)*bs; 1788 } else { 1789 value = v + (l*(stepval+bs) + k)*bs; 1790 } 1791 if (col <= lastcol) low = 0; 1792 else high = nrow; 1793 lastcol = col; 1794 while (high-low > 7) { 1795 t = (low+high)/2; 1796 if (rp[t] > col) high = t; 1797 else low = t; 1798 } 1799 for (i=low; i<high; i++) { 1800 if (rp[i] > col) break; 1801 if (rp[i] == col) { 1802 bap = ap + bs2*i; 1803 if (roworiented) { 1804 if (is == ADD_VALUES) { 1805 for (ii=0; ii<bs; ii++,value+=stepval) { 1806 for (jj=ii; jj<bs2; jj+=bs) { 1807 bap[jj] += *value++; 1808 } 1809 } 1810 } else { 1811 for (ii=0; ii<bs; ii++,value+=stepval) { 1812 for (jj=ii; jj<bs2; jj+=bs) { 1813 bap[jj] = *value++; 1814 } 1815 } 1816 } 1817 } else { 1818 if (is == ADD_VALUES) { 1819 for (ii=0; ii<bs; ii++,value+=bs+stepval) { 1820 for (jj=0; jj<bs; jj++) { 1821 bap[jj] += value[jj]; 1822 } 1823 bap += bs; 1824 } 1825 } else { 1826 for (ii=0; ii<bs; ii++,value+=bs+stepval) { 1827 for (jj=0; jj<bs; jj++) { 1828 bap[jj] = value[jj]; 1829 } 1830 bap += bs; 1831 } 1832 } 1833 } 1834 goto noinsert2; 1835 } 1836 } 1837 if (nonew == 1) goto noinsert2; 1838 if (nonew == -1) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Inserting a new nonzero (%D, %D) in the matrix", row, col); 1839 MatSeqXAIJReallocateAIJ(A,a->mbs,bs2,nrow,row,col,rmax,aa,ai,aj,rp,ap,imax,nonew,MatScalar); 1840 N = nrow++ - 1; high++; 1841 /* shift up all the later entries in this row */ 1842 for (ii=N; ii>=i; ii--) { 1843 rp[ii+1] = rp[ii]; 1844 ierr = PetscMemcpy(ap+bs2*(ii+1),ap+bs2*(ii),bs2*sizeof(MatScalar));CHKERRQ(ierr); 1845 } 1846 if (N >= i) { 1847 ierr = PetscMemzero(ap+bs2*i,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1848 } 1849 rp[i] = col; 1850 bap = ap + bs2*i; 1851 if (roworiented) { 1852 for (ii=0; ii<bs; ii++,value+=stepval) { 1853 for (jj=ii; jj<bs2; jj+=bs) { 1854 bap[jj] = *value++; 1855 } 1856 } 1857 } else { 1858 for (ii=0; ii<bs; ii++,value+=stepval) { 1859 for (jj=0; jj<bs; jj++) { 1860 *bap++ = *value++; 1861 } 1862 } 1863 } 1864 noinsert2:; 1865 low = i; 1866 } 1867 ailen[row] = nrow; 1868 } 1869 PetscFunctionReturn(0); 1870 } 1871 1872 #undef __FUNCT__ 1873 #define __FUNCT__ "MatAssemblyEnd_SeqBAIJ" 1874 PetscErrorCode MatAssemblyEnd_SeqBAIJ(Mat A,MatAssemblyType mode) 1875 { 1876 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 1877 PetscInt fshift = 0,i,j,*ai = a->i,*aj = a->j,*imax = a->imax; 1878 PetscInt m = A->rmap->N,*ip,N,*ailen = a->ilen; 1879 PetscErrorCode ierr; 1880 PetscInt mbs = a->mbs,bs2 = a->bs2,rmax = 0; 1881 MatScalar *aa = a->a,*ap; 1882 PetscReal ratio=0.6; 1883 1884 PetscFunctionBegin; 1885 if (mode == MAT_FLUSH_ASSEMBLY) PetscFunctionReturn(0); 1886 1887 if (m) rmax = ailen[0]; 1888 for (i=1; i<mbs; i++) { 1889 /* move each row back by the amount of empty slots (fshift) before it*/ 1890 fshift += imax[i-1] - ailen[i-1]; 1891 rmax = PetscMax(rmax,ailen[i]); 1892 if (fshift) { 1893 ip = aj + ai[i]; ap = aa + bs2*ai[i]; 1894 N = ailen[i]; 1895 for (j=0; j<N; j++) { 1896 ip[j-fshift] = ip[j]; 1897 1898 ierr = PetscMemcpy(ap+(j-fshift)*bs2,ap+j*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1899 } 1900 } 1901 ai[i] = ai[i-1] + ailen[i-1]; 1902 } 1903 if (mbs) { 1904 fshift += imax[mbs-1] - ailen[mbs-1]; 1905 ai[mbs] = ai[mbs-1] + ailen[mbs-1]; 1906 } 1907 /* reset ilen and imax for each row */ 1908 for (i=0; i<mbs; i++) { 1909 ailen[i] = imax[i] = ai[i+1] - ai[i]; 1910 } 1911 a->nz = ai[mbs]; 1912 1913 /* diagonals may have moved, so kill the diagonal pointers */ 1914 a->idiagvalid = PETSC_FALSE; 1915 if (fshift && a->diag) { 1916 ierr = PetscFree(a->diag);CHKERRQ(ierr); 1917 ierr = PetscLogObjectMemory((PetscObject)A,-(mbs+1)*sizeof(PetscInt));CHKERRQ(ierr); 1918 a->diag = 0; 1919 } 1920 if (fshift && a->nounused == -1) SETERRQ4(PETSC_COMM_SELF,PETSC_ERR_PLIB, "Unused space detected in matrix: %D X %D block size %D, %D unneeded", m, A->cmap->n, A->rmap->bs, fshift*bs2); 1921 ierr = PetscInfo5(A,"Matrix size: %D X %D, block size %D; storage space: %D unneeded, %D used\n",m,A->cmap->n,A->rmap->bs,fshift*bs2,a->nz*bs2);CHKERRQ(ierr); 1922 ierr = PetscInfo1(A,"Number of mallocs during MatSetValues is %D\n",a->reallocs);CHKERRQ(ierr); 1923 ierr = PetscInfo1(A,"Most nonzeros blocks in any row is %D\n",rmax);CHKERRQ(ierr); 1924 1925 A->info.mallocs += a->reallocs; 1926 a->reallocs = 0; 1927 A->info.nz_unneeded = (PetscReal)fshift*bs2; 1928 1929 ierr = MatCheckCompressedRow(A,&a->compressedrow,a->i,mbs,ratio);CHKERRQ(ierr); 1930 1931 A->same_nonzero = PETSC_TRUE; 1932 PetscFunctionReturn(0); 1933 } 1934 1935 /* 1936 This function returns an array of flags which indicate the locations of contiguous 1937 blocks that should be zeroed. for eg: if bs = 3 and is = [0,1,2,3,5,6,7,8,9] 1938 then the resulting sizes = [3,1,1,3,1] correspondig to sets [(0,1,2),(3),(5),(6,7,8),(9)] 1939 Assume: sizes should be long enough to hold all the values. 1940 */ 1941 #undef __FUNCT__ 1942 #define __FUNCT__ "MatZeroRows_SeqBAIJ_Check_Blocks" 1943 static PetscErrorCode MatZeroRows_SeqBAIJ_Check_Blocks(PetscInt idx[],PetscInt n,PetscInt bs,PetscInt sizes[], PetscInt *bs_max) 1944 { 1945 PetscInt i,j,k,row; 1946 PetscBool flg; 1947 1948 PetscFunctionBegin; 1949 for (i=0,j=0; i<n; j++) { 1950 row = idx[i]; 1951 if (row%bs!=0) { /* Not the begining of a block */ 1952 sizes[j] = 1; 1953 i++; 1954 } else if (i+bs > n) { /* complete block doesn't exist (at idx end) */ 1955 sizes[j] = 1; /* Also makes sure atleast 'bs' values exist for next else */ 1956 i++; 1957 } else { /* Begining of the block, so check if the complete block exists */ 1958 flg = PETSC_TRUE; 1959 for (k=1; k<bs; k++) { 1960 if (row+k != idx[i+k]) { /* break in the block */ 1961 flg = PETSC_FALSE; 1962 break; 1963 } 1964 } 1965 if (flg) { /* No break in the bs */ 1966 sizes[j] = bs; 1967 i += bs; 1968 } else { 1969 sizes[j] = 1; 1970 i++; 1971 } 1972 } 1973 } 1974 *bs_max = j; 1975 PetscFunctionReturn(0); 1976 } 1977 1978 #undef __FUNCT__ 1979 #define __FUNCT__ "MatZeroRows_SeqBAIJ" 1980 PetscErrorCode MatZeroRows_SeqBAIJ(Mat A,PetscInt is_n,const PetscInt is_idx[],PetscScalar diag,Vec x, Vec b) 1981 { 1982 Mat_SeqBAIJ *baij=(Mat_SeqBAIJ*)A->data; 1983 PetscErrorCode ierr; 1984 PetscInt i,j,k,count,*rows; 1985 PetscInt bs=A->rmap->bs,bs2=baij->bs2,*sizes,row,bs_max; 1986 PetscScalar zero = 0.0; 1987 MatScalar *aa; 1988 const PetscScalar *xx; 1989 PetscScalar *bb; 1990 1991 PetscFunctionBegin; 1992 /* fix right hand side if needed */ 1993 if (x && b) { 1994 ierr = VecGetArrayRead(x,&xx);CHKERRQ(ierr); 1995 ierr = VecGetArray(b,&bb);CHKERRQ(ierr); 1996 for (i=0; i<is_n; i++) { 1997 bb[is_idx[i]] = diag*xx[is_idx[i]]; 1998 } 1999 ierr = VecRestoreArrayRead(x,&xx);CHKERRQ(ierr); 2000 ierr = VecRestoreArray(b,&bb);CHKERRQ(ierr); 2001 } 2002 2003 /* Make a copy of the IS and sort it */ 2004 /* allocate memory for rows,sizes */ 2005 ierr = PetscMalloc2(is_n,PetscInt,&rows,2*is_n,PetscInt,&sizes);CHKERRQ(ierr); 2006 2007 /* copy IS values to rows, and sort them */ 2008 for (i=0; i<is_n; i++) rows[i] = is_idx[i]; 2009 ierr = PetscSortInt(is_n,rows);CHKERRQ(ierr); 2010 2011 if (baij->keepnonzeropattern) { 2012 for (i=0; i<is_n; i++) sizes[i] = 1; 2013 bs_max = is_n; 2014 A->same_nonzero = PETSC_TRUE; 2015 } else { 2016 ierr = MatZeroRows_SeqBAIJ_Check_Blocks(rows,is_n,bs,sizes,&bs_max);CHKERRQ(ierr); 2017 2018 A->same_nonzero = PETSC_FALSE; 2019 } 2020 2021 for (i=0,j=0; i<bs_max; j+=sizes[i],i++) { 2022 row = rows[j]; 2023 if (row < 0 || row > A->rmap->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"row %D out of range",row); 2024 count = (baij->i[row/bs +1] - baij->i[row/bs])*bs; 2025 aa = ((MatScalar*)(baij->a)) + baij->i[row/bs]*bs2 + (row%bs); 2026 if (sizes[i] == bs && !baij->keepnonzeropattern) { 2027 if (diag != (PetscScalar)0.0) { 2028 if (baij->ilen[row/bs] > 0) { 2029 baij->ilen[row/bs] = 1; 2030 baij->j[baij->i[row/bs]] = row/bs; 2031 2032 ierr = PetscMemzero(aa,count*bs*sizeof(MatScalar));CHKERRQ(ierr); 2033 } 2034 /* Now insert all the diagonal values for this bs */ 2035 for (k=0; k<bs; k++) { 2036 ierr = (*A->ops->setvalues)(A,1,rows+j+k,1,rows+j+k,&diag,INSERT_VALUES);CHKERRQ(ierr); 2037 } 2038 } else { /* (diag == 0.0) */ 2039 baij->ilen[row/bs] = 0; 2040 } /* end (diag == 0.0) */ 2041 } else { /* (sizes[i] != bs) */ 2042 #if defined(PETSC_USE_DEBUG) 2043 if (sizes[i] != 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Internal Error. Value should be 1"); 2044 #endif 2045 for (k=0; k<count; k++) { 2046 aa[0] = zero; 2047 aa += bs; 2048 } 2049 if (diag != (PetscScalar)0.0) { 2050 ierr = (*A->ops->setvalues)(A,1,rows+j,1,rows+j,&diag,INSERT_VALUES);CHKERRQ(ierr); 2051 } 2052 } 2053 } 2054 2055 ierr = PetscFree2(rows,sizes);CHKERRQ(ierr); 2056 ierr = MatAssemblyEnd_SeqBAIJ(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 2057 PetscFunctionReturn(0); 2058 } 2059 2060 #undef __FUNCT__ 2061 #define __FUNCT__ "MatZeroRowsColumns_SeqBAIJ" 2062 PetscErrorCode MatZeroRowsColumns_SeqBAIJ(Mat A,PetscInt is_n,const PetscInt is_idx[],PetscScalar diag,Vec x, Vec b) 2063 { 2064 Mat_SeqBAIJ *baij=(Mat_SeqBAIJ*)A->data; 2065 PetscErrorCode ierr; 2066 PetscInt i,j,k,count; 2067 PetscInt bs =A->rmap->bs,bs2=baij->bs2,row,col; 2068 PetscScalar zero = 0.0; 2069 MatScalar *aa; 2070 const PetscScalar *xx; 2071 PetscScalar *bb; 2072 PetscBool *zeroed,vecs = PETSC_FALSE; 2073 2074 PetscFunctionBegin; 2075 /* fix right hand side if needed */ 2076 if (x && b) { 2077 ierr = VecGetArrayRead(x,&xx);CHKERRQ(ierr); 2078 ierr = VecGetArray(b,&bb);CHKERRQ(ierr); 2079 vecs = PETSC_TRUE; 2080 } 2081 A->same_nonzero = PETSC_TRUE; 2082 2083 /* zero the columns */ 2084 ierr = PetscMalloc(A->rmap->n*sizeof(PetscBool),&zeroed);CHKERRQ(ierr); 2085 ierr = PetscMemzero(zeroed,A->rmap->n*sizeof(PetscBool));CHKERRQ(ierr); 2086 for (i=0; i<is_n; i++) { 2087 if (is_idx[i] < 0 || is_idx[i] >= A->rmap->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"row %D out of range",is_idx[i]); 2088 zeroed[is_idx[i]] = PETSC_TRUE; 2089 } 2090 for (i=0; i<A->rmap->N; i++) { 2091 if (!zeroed[i]) { 2092 row = i/bs; 2093 for (j=baij->i[row]; j<baij->i[row+1]; j++) { 2094 for (k=0; k<bs; k++) { 2095 col = bs*baij->j[j] + k; 2096 if (zeroed[col]) { 2097 aa = ((MatScalar*)(baij->a)) + j*bs2 + (i%bs) + bs*k; 2098 if (vecs) bb[i] -= aa[0]*xx[col]; 2099 aa[0] = 0.0; 2100 } 2101 } 2102 } 2103 } else if (vecs) bb[i] = diag*xx[i]; 2104 } 2105 ierr = PetscFree(zeroed);CHKERRQ(ierr); 2106 if (vecs) { 2107 ierr = VecRestoreArrayRead(x,&xx);CHKERRQ(ierr); 2108 ierr = VecRestoreArray(b,&bb);CHKERRQ(ierr); 2109 } 2110 2111 /* zero the rows */ 2112 for (i=0; i<is_n; i++) { 2113 row = is_idx[i]; 2114 count = (baij->i[row/bs +1] - baij->i[row/bs])*bs; 2115 aa = ((MatScalar*)(baij->a)) + baij->i[row/bs]*bs2 + (row%bs); 2116 for (k=0; k<count; k++) { 2117 aa[0] = zero; 2118 aa += bs; 2119 } 2120 if (diag != (PetscScalar)0.0) { 2121 ierr = (*A->ops->setvalues)(A,1,&row,1,&row,&diag,INSERT_VALUES);CHKERRQ(ierr); 2122 } 2123 } 2124 ierr = MatAssemblyEnd_SeqBAIJ(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 2125 PetscFunctionReturn(0); 2126 } 2127 2128 #undef __FUNCT__ 2129 #define __FUNCT__ "MatSetValues_SeqBAIJ" 2130 PetscErrorCode MatSetValues_SeqBAIJ(Mat A,PetscInt m,const PetscInt im[],PetscInt n,const PetscInt in[],const PetscScalar v[],InsertMode is) 2131 { 2132 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2133 PetscInt *rp,k,low,high,t,ii,row,nrow,i,col,l,rmax,N,lastcol = -1; 2134 PetscInt *imax=a->imax,*ai=a->i,*ailen=a->ilen; 2135 PetscInt *aj =a->j,nonew=a->nonew,bs=A->rmap->bs,brow,bcol; 2136 PetscErrorCode ierr; 2137 PetscInt ridx,cidx,bs2=a->bs2; 2138 PetscBool roworiented=a->roworiented; 2139 MatScalar *ap,value,*aa=a->a,*bap; 2140 2141 PetscFunctionBegin; 2142 if (v) PetscValidScalarPointer(v,6); 2143 for (k=0; k<m; k++) { /* loop over added rows */ 2144 row = im[k]; 2145 brow = row/bs; 2146 if (row < 0) continue; 2147 #if defined(PETSC_USE_DEBUG) 2148 if (row >= A->rmap->N) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Row too large: row %D max %D",row,A->rmap->N-1); 2149 #endif 2150 rp = aj + ai[brow]; 2151 ap = aa + bs2*ai[brow]; 2152 rmax = imax[brow]; 2153 nrow = ailen[brow]; 2154 low = 0; 2155 high = nrow; 2156 for (l=0; l<n; l++) { /* loop over added columns */ 2157 if (in[l] < 0) continue; 2158 #if defined(PETSC_USE_DEBUG) 2159 if (in[l] >= A->cmap->n) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Column too large: col %D max %D",in[l],A->cmap->n-1); 2160 #endif 2161 col = in[l]; bcol = col/bs; 2162 ridx = row % bs; cidx = col % bs; 2163 if (roworiented) { 2164 value = v[l + k*n]; 2165 } else { 2166 value = v[k + l*m]; 2167 } 2168 if (col <= lastcol) low = 0; else high = nrow; 2169 lastcol = col; 2170 while (high-low > 7) { 2171 t = (low+high)/2; 2172 if (rp[t] > bcol) high = t; 2173 else low = t; 2174 } 2175 for (i=low; i<high; i++) { 2176 if (rp[i] > bcol) break; 2177 if (rp[i] == bcol) { 2178 bap = ap + bs2*i + bs*cidx + ridx; 2179 if (is == ADD_VALUES) *bap += value; 2180 else *bap = value; 2181 goto noinsert1; 2182 } 2183 } 2184 if (nonew == 1) goto noinsert1; 2185 if (nonew == -1) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Inserting a new nonzero (%D, %D) in the matrix", row, col); 2186 MatSeqXAIJReallocateAIJ(A,a->mbs,bs2,nrow,brow,bcol,rmax,aa,ai,aj,rp,ap,imax,nonew,MatScalar); 2187 N = nrow++ - 1; high++; 2188 /* shift up all the later entries in this row */ 2189 for (ii=N; ii>=i; ii--) { 2190 rp[ii+1] = rp[ii]; 2191 ierr = PetscMemcpy(ap+bs2*(ii+1),ap+bs2*(ii),bs2*sizeof(MatScalar));CHKERRQ(ierr); 2192 } 2193 if (N>=i) { 2194 ierr = PetscMemzero(ap+bs2*i,bs2*sizeof(MatScalar));CHKERRQ(ierr); 2195 } 2196 rp[i] = bcol; 2197 ap[bs2*i + bs*cidx + ridx] = value; 2198 a->nz++; 2199 noinsert1:; 2200 low = i; 2201 } 2202 ailen[brow] = nrow; 2203 } 2204 A->same_nonzero = PETSC_FALSE; 2205 PetscFunctionReturn(0); 2206 } 2207 2208 #undef __FUNCT__ 2209 #define __FUNCT__ "MatILUFactor_SeqBAIJ" 2210 PetscErrorCode MatILUFactor_SeqBAIJ(Mat inA,IS row,IS col,const MatFactorInfo *info) 2211 { 2212 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)inA->data; 2213 Mat outA; 2214 PetscErrorCode ierr; 2215 PetscBool row_identity,col_identity; 2216 2217 PetscFunctionBegin; 2218 if (info->levels != 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Only levels = 0 supported for in-place ILU"); 2219 ierr = ISIdentity(row,&row_identity);CHKERRQ(ierr); 2220 ierr = ISIdentity(col,&col_identity);CHKERRQ(ierr); 2221 if (!row_identity || !col_identity) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Row and column permutations must be identity for in-place ILU"); 2222 2223 outA = inA; 2224 inA->factortype = MAT_FACTOR_LU; 2225 2226 ierr = MatMarkDiagonal_SeqBAIJ(inA);CHKERRQ(ierr); 2227 2228 ierr = PetscObjectReference((PetscObject)row);CHKERRQ(ierr); 2229 ierr = ISDestroy(&a->row);CHKERRQ(ierr); 2230 a->row = row; 2231 ierr = PetscObjectReference((PetscObject)col);CHKERRQ(ierr); 2232 ierr = ISDestroy(&a->col);CHKERRQ(ierr); 2233 a->col = col; 2234 2235 /* Create the invert permutation so that it can be used in MatLUFactorNumeric() */ 2236 ierr = ISDestroy(&a->icol);CHKERRQ(ierr); 2237 ierr = ISInvertPermutation(col,PETSC_DECIDE,&a->icol);CHKERRQ(ierr); 2238 ierr = PetscLogObjectParent((PetscObject)inA,(PetscObject)a->icol);CHKERRQ(ierr); 2239 2240 ierr = MatSeqBAIJSetNumericFactorization_inplace(inA,(PetscBool)(row_identity && col_identity));CHKERRQ(ierr); 2241 if (!a->solve_work) { 2242 ierr = PetscMalloc((inA->rmap->N+inA->rmap->bs)*sizeof(PetscScalar),&a->solve_work);CHKERRQ(ierr); 2243 ierr = PetscLogObjectMemory((PetscObject)inA,(inA->rmap->N+inA->rmap->bs)*sizeof(PetscScalar));CHKERRQ(ierr); 2244 } 2245 ierr = MatLUFactorNumeric(outA,inA,info);CHKERRQ(ierr); 2246 PetscFunctionReturn(0); 2247 } 2248 2249 #undef __FUNCT__ 2250 #define __FUNCT__ "MatSeqBAIJSetColumnIndices_SeqBAIJ" 2251 PetscErrorCode MatSeqBAIJSetColumnIndices_SeqBAIJ(Mat mat,PetscInt *indices) 2252 { 2253 Mat_SeqBAIJ *baij = (Mat_SeqBAIJ*)mat->data; 2254 PetscInt i,nz,mbs; 2255 2256 PetscFunctionBegin; 2257 nz = baij->maxnz; 2258 mbs = baij->mbs; 2259 for (i=0; i<nz; i++) { 2260 baij->j[i] = indices[i]; 2261 } 2262 baij->nz = nz; 2263 for (i=0; i<mbs; i++) { 2264 baij->ilen[i] = baij->imax[i]; 2265 } 2266 PetscFunctionReturn(0); 2267 } 2268 2269 #undef __FUNCT__ 2270 #define __FUNCT__ "MatSeqBAIJSetColumnIndices" 2271 /*@ 2272 MatSeqBAIJSetColumnIndices - Set the column indices for all the rows 2273 in the matrix. 2274 2275 Input Parameters: 2276 + mat - the SeqBAIJ matrix 2277 - indices - the column indices 2278 2279 Level: advanced 2280 2281 Notes: 2282 This can be called if you have precomputed the nonzero structure of the 2283 matrix and want to provide it to the matrix object to improve the performance 2284 of the MatSetValues() operation. 2285 2286 You MUST have set the correct numbers of nonzeros per row in the call to 2287 MatCreateSeqBAIJ(), and the columns indices MUST be sorted. 2288 2289 MUST be called before any calls to MatSetValues(); 2290 2291 @*/ 2292 PetscErrorCode MatSeqBAIJSetColumnIndices(Mat mat,PetscInt *indices) 2293 { 2294 PetscErrorCode ierr; 2295 2296 PetscFunctionBegin; 2297 PetscValidHeaderSpecific(mat,MAT_CLASSID,1); 2298 PetscValidPointer(indices,2); 2299 ierr = PetscUseMethod(mat,"MatSeqBAIJSetColumnIndices_C",(Mat,PetscInt*),(mat,indices));CHKERRQ(ierr); 2300 PetscFunctionReturn(0); 2301 } 2302 2303 #undef __FUNCT__ 2304 #define __FUNCT__ "MatGetRowMaxAbs_SeqBAIJ" 2305 PetscErrorCode MatGetRowMaxAbs_SeqBAIJ(Mat A,Vec v,PetscInt idx[]) 2306 { 2307 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2308 PetscErrorCode ierr; 2309 PetscInt i,j,n,row,bs,*ai,*aj,mbs; 2310 PetscReal atmp; 2311 PetscScalar *x,zero = 0.0; 2312 MatScalar *aa; 2313 PetscInt ncols,brow,krow,kcol; 2314 2315 PetscFunctionBegin; 2316 if (A->factortype) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"Not for factored matrix"); 2317 bs = A->rmap->bs; 2318 aa = a->a; 2319 ai = a->i; 2320 aj = a->j; 2321 mbs = a->mbs; 2322 2323 ierr = VecSet(v,zero);CHKERRQ(ierr); 2324 ierr = VecGetArray(v,&x);CHKERRQ(ierr); 2325 ierr = VecGetLocalSize(v,&n);CHKERRQ(ierr); 2326 if (n != A->rmap->N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Nonconforming matrix and vector"); 2327 for (i=0; i<mbs; i++) { 2328 ncols = ai[1] - ai[0]; ai++; 2329 brow = bs*i; 2330 for (j=0; j<ncols; j++) { 2331 for (kcol=0; kcol<bs; kcol++) { 2332 for (krow=0; krow<bs; krow++) { 2333 atmp = PetscAbsScalar(*aa);aa++; 2334 row = brow + krow; /* row index */ 2335 /* printf("val[%d,%d]: %G\n",row,bcol+kcol,atmp); */ 2336 if (PetscAbsScalar(x[row]) < atmp) {x[row] = atmp; if (idx) idx[row] = bs*(*aj) + kcol;} 2337 } 2338 } 2339 aj++; 2340 } 2341 } 2342 ierr = VecRestoreArray(v,&x);CHKERRQ(ierr); 2343 PetscFunctionReturn(0); 2344 } 2345 2346 #undef __FUNCT__ 2347 #define __FUNCT__ "MatCopy_SeqBAIJ" 2348 PetscErrorCode MatCopy_SeqBAIJ(Mat A,Mat B,MatStructure str) 2349 { 2350 PetscErrorCode ierr; 2351 2352 PetscFunctionBegin; 2353 /* If the two matrices have the same copy implementation, use fast copy. */ 2354 if (str == SAME_NONZERO_PATTERN && (A->ops->copy == B->ops->copy)) { 2355 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2356 Mat_SeqBAIJ *b = (Mat_SeqBAIJ*)B->data; 2357 PetscInt ambs=a->mbs,bmbs=b->mbs,abs=A->rmap->bs,bbs=B->rmap->bs,bs2=abs*abs; 2358 2359 if (a->i[ambs] != b->i[bmbs]) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"Number of nonzero blocks in matrices A %D and B %D are different",a->i[ambs],b->i[bmbs]); 2360 if (abs != bbs) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"Block size A %D and B %D are different",abs,bbs); 2361 ierr = PetscMemcpy(b->a,a->a,(bs2*a->i[ambs])*sizeof(PetscScalar));CHKERRQ(ierr); 2362 } else { 2363 ierr = MatCopy_Basic(A,B,str);CHKERRQ(ierr); 2364 } 2365 PetscFunctionReturn(0); 2366 } 2367 2368 #undef __FUNCT__ 2369 #define __FUNCT__ "MatSetUp_SeqBAIJ" 2370 PetscErrorCode MatSetUp_SeqBAIJ(Mat A) 2371 { 2372 PetscErrorCode ierr; 2373 2374 PetscFunctionBegin; 2375 ierr = MatSeqBAIJSetPreallocation_SeqBAIJ(A,A->rmap->bs,PETSC_DEFAULT,0);CHKERRQ(ierr); 2376 PetscFunctionReturn(0); 2377 } 2378 2379 #undef __FUNCT__ 2380 #define __FUNCT__ "MatSeqBAIJGetArray_SeqBAIJ" 2381 PetscErrorCode MatSeqBAIJGetArray_SeqBAIJ(Mat A,PetscScalar *array[]) 2382 { 2383 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2384 2385 PetscFunctionBegin; 2386 *array = a->a; 2387 PetscFunctionReturn(0); 2388 } 2389 2390 #undef __FUNCT__ 2391 #define __FUNCT__ "MatSeqBAIJRestoreArray_SeqBAIJ" 2392 PetscErrorCode MatSeqBAIJRestoreArray_SeqBAIJ(Mat A,PetscScalar *array[]) 2393 { 2394 PetscFunctionBegin; 2395 PetscFunctionReturn(0); 2396 } 2397 2398 #undef __FUNCT__ 2399 #define __FUNCT__ "MatAXPY_SeqBAIJ" 2400 PetscErrorCode MatAXPY_SeqBAIJ(Mat Y,PetscScalar a,Mat X,MatStructure str) 2401 { 2402 Mat_SeqBAIJ *x = (Mat_SeqBAIJ*)X->data,*y = (Mat_SeqBAIJ*)Y->data; 2403 PetscErrorCode ierr; 2404 PetscInt i,bs=Y->rmap->bs,j,bs2=bs*bs; 2405 PetscBLASInt one=1; 2406 2407 PetscFunctionBegin; 2408 if (str == SAME_NONZERO_PATTERN) { 2409 PetscScalar alpha = a; 2410 PetscBLASInt bnz; 2411 ierr = PetscBLASIntCast(x->nz*bs2,&bnz);CHKERRQ(ierr); 2412 PetscStackCallBLAS("BLASaxpy",BLASaxpy_(&bnz,&alpha,x->a,&one,y->a,&one)); 2413 } else if (str == SUBSET_NONZERO_PATTERN) { /* nonzeros of X is a subset of Y's */ 2414 if (y->xtoy && y->XtoY != X) { 2415 ierr = PetscFree(y->xtoy);CHKERRQ(ierr); 2416 ierr = MatDestroy(&y->XtoY);CHKERRQ(ierr); 2417 } 2418 if (!y->xtoy) { /* get xtoy */ 2419 ierr = MatAXPYGetxtoy_Private(x->mbs,x->i,x->j,NULL, y->i,y->j,NULL, &y->xtoy);CHKERRQ(ierr); 2420 y->XtoY = X; 2421 ierr = PetscObjectReference((PetscObject)X);CHKERRQ(ierr); 2422 } 2423 for (i=0; i<x->nz; i++) { 2424 j = 0; 2425 while (j < bs2) { 2426 y->a[bs2*y->xtoy[i]+j] += a*(x->a[bs2*i+j]); 2427 j++; 2428 } 2429 } 2430 ierr = PetscInfo3(Y,"ratio of nnz(X)/nnz(Y): %D/%D = %G\n",bs2*x->nz,bs2*y->nz,(PetscReal)(bs2*x->nz)/(bs2*y->nz));CHKERRQ(ierr); 2431 } else { 2432 ierr = MatAXPY_Basic(Y,a,X,str);CHKERRQ(ierr); 2433 } 2434 PetscFunctionReturn(0); 2435 } 2436 2437 #undef __FUNCT__ 2438 #define __FUNCT__ "MatRealPart_SeqBAIJ" 2439 PetscErrorCode MatRealPart_SeqBAIJ(Mat A) 2440 { 2441 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2442 PetscInt i,nz = a->bs2*a->i[a->mbs]; 2443 MatScalar *aa = a->a; 2444 2445 PetscFunctionBegin; 2446 for (i=0; i<nz; i++) aa[i] = PetscRealPart(aa[i]); 2447 PetscFunctionReturn(0); 2448 } 2449 2450 #undef __FUNCT__ 2451 #define __FUNCT__ "MatImaginaryPart_SeqBAIJ" 2452 PetscErrorCode MatImaginaryPart_SeqBAIJ(Mat A) 2453 { 2454 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2455 PetscInt i,nz = a->bs2*a->i[a->mbs]; 2456 MatScalar *aa = a->a; 2457 2458 PetscFunctionBegin; 2459 for (i=0; i<nz; i++) aa[i] = PetscImaginaryPart(aa[i]); 2460 PetscFunctionReturn(0); 2461 } 2462 2463 extern PetscErrorCode MatFDColoringCreate_SeqAIJ(Mat,ISColoring,MatFDColoring); 2464 2465 #undef __FUNCT__ 2466 #define __FUNCT__ "MatGetColumnIJ_SeqBAIJ" 2467 /* 2468 Code almost idential to MatGetColumnIJ_SeqAIJ() should share common code 2469 */ 2470 PetscErrorCode MatGetColumnIJ_SeqBAIJ(Mat A,PetscInt oshift,PetscBool symmetric,PetscBool inodecompressed,PetscInt *nn,const PetscInt *ia[],const PetscInt *ja[],PetscBool *done) 2471 { 2472 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2473 PetscErrorCode ierr; 2474 PetscInt bs = A->rmap->bs,i,*collengths,*cia,*cja,n = A->cmap->n/bs,m = A->rmap->n/bs; 2475 PetscInt nz = a->i[m],row,*jj,mr,col; 2476 2477 PetscFunctionBegin; 2478 *nn = n; 2479 if (!ia) PetscFunctionReturn(0); 2480 if (symmetric) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Not for BAIJ matrices"); 2481 else { 2482 ierr = PetscMalloc((n+1)*sizeof(PetscInt),&collengths);CHKERRQ(ierr); 2483 ierr = PetscMemzero(collengths,n*sizeof(PetscInt));CHKERRQ(ierr); 2484 ierr = PetscMalloc((n+1)*sizeof(PetscInt),&cia);CHKERRQ(ierr); 2485 ierr = PetscMalloc((nz+1)*sizeof(PetscInt),&cja);CHKERRQ(ierr); 2486 jj = a->j; 2487 for (i=0; i<nz; i++) { 2488 collengths[jj[i]]++; 2489 } 2490 cia[0] = oshift; 2491 for (i=0; i<n; i++) { 2492 cia[i+1] = cia[i] + collengths[i]; 2493 } 2494 ierr = PetscMemzero(collengths,n*sizeof(PetscInt));CHKERRQ(ierr); 2495 jj = a->j; 2496 for (row=0; row<m; row++) { 2497 mr = a->i[row+1] - a->i[row]; 2498 for (i=0; i<mr; i++) { 2499 col = *jj++; 2500 2501 cja[cia[col] + collengths[col]++ - oshift] = row + oshift; 2502 } 2503 } 2504 ierr = PetscFree(collengths);CHKERRQ(ierr); 2505 *ia = cia; *ja = cja; 2506 } 2507 PetscFunctionReturn(0); 2508 } 2509 2510 #undef __FUNCT__ 2511 #define __FUNCT__ "MatRestoreColumnIJ_SeqBAIJ" 2512 PetscErrorCode MatRestoreColumnIJ_SeqBAIJ(Mat A,PetscInt oshift,PetscBool symmetric,PetscBool inodecompressed,PetscInt *n,const PetscInt *ia[],const PetscInt *ja[],PetscBool *done) 2513 { 2514 PetscErrorCode ierr; 2515 2516 PetscFunctionBegin; 2517 if (!ia) PetscFunctionReturn(0); 2518 ierr = PetscFree(*ia);CHKERRQ(ierr); 2519 ierr = PetscFree(*ja);CHKERRQ(ierr); 2520 PetscFunctionReturn(0); 2521 } 2522 2523 /* 2524 MatGetColumnIJ_SeqBAIJ_Color() and MatRestoreColumnIJ_SeqBAIJ_Color() are customized from 2525 MatGetColumnIJ_SeqBAIJ() and MatRestoreColumnIJ_SeqBAIJ() by adding an output 2526 spidx[], index of a->a, to be used in MatTransposeColoringCreate_SeqBAIJ() and MatFDColoringCreate_SeqBAIJ() 2527 */ 2528 #undef __FUNCT__ 2529 #define __FUNCT__ "MatGetColumnIJ_SeqBAIJ_Color" 2530 PetscErrorCode MatGetColumnIJ_SeqBAIJ_Color(Mat A,PetscInt oshift,PetscBool symmetric,PetscBool inodecompressed,PetscInt *nn,const PetscInt *ia[],const PetscInt *ja[],PetscInt *spidx[],PetscBool *done) 2531 { 2532 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 2533 PetscErrorCode ierr; 2534 PetscInt i,*collengths,*cia,*cja,n=a->nbs,m=a->mbs; 2535 PetscInt nz = a->i[m],row,*jj,mr,col; 2536 PetscInt *cspidx; 2537 2538 PetscFunctionBegin; 2539 *nn = n; 2540 if (!ia) PetscFunctionReturn(0); 2541 if (symmetric) { 2542 SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"MatGetColumnIJ_SeqAIJ_Color() not supported for the case symmetric"); 2543 ierr = MatToSymmetricIJ_SeqAIJ(A->rmap->n,a->i,a->j,0,oshift,(PetscInt**)ia,(PetscInt**)ja);CHKERRQ(ierr); 2544 } else { 2545 ierr = PetscMalloc((n+1)*sizeof(PetscInt),&collengths);CHKERRQ(ierr); 2546 ierr = PetscMemzero(collengths,n*sizeof(PetscInt));CHKERRQ(ierr); 2547 ierr = PetscMalloc((n+1)*sizeof(PetscInt),&cia);CHKERRQ(ierr); 2548 ierr = PetscMalloc((nz+1)*sizeof(PetscInt),&cja);CHKERRQ(ierr); 2549 ierr = PetscMalloc((nz+1)*sizeof(PetscInt),&cspidx);CHKERRQ(ierr); 2550 jj = a->j; 2551 for (i=0; i<nz; i++) { 2552 collengths[jj[i]]++; 2553 } 2554 cia[0] = oshift; 2555 for (i=0; i<n; i++) { 2556 cia[i+1] = cia[i] + collengths[i]; 2557 } 2558 ierr = PetscMemzero(collengths,n*sizeof(PetscInt));CHKERRQ(ierr); 2559 jj = a->j; 2560 for (row=0; row<m; row++) { 2561 mr = a->i[row+1] - a->i[row]; 2562 for (i=0; i<mr; i++) { 2563 col = *jj++; 2564 cspidx[cia[col] + collengths[col] - oshift] = a->i[row] + i; /* index of a->j */ 2565 cja[cia[col] + collengths[col]++ - oshift] = row + oshift; 2566 } 2567 } 2568 ierr = PetscFree(collengths);CHKERRQ(ierr); 2569 *ia = cia; *ja = cja; 2570 *spidx = cspidx; 2571 } 2572 PetscFunctionReturn(0); 2573 } 2574 2575 #undef __FUNCT__ 2576 #define __FUNCT__ "MatRestoreColumnIJ_SeqBAIJ_Color" 2577 PetscErrorCode MatRestoreColumnIJ_SeqBAIJ_Color(Mat A,PetscInt oshift,PetscBool symmetric,PetscBool inodecompressed,PetscInt *n,const PetscInt *ia[],const PetscInt *ja[],PetscInt *spidx[],PetscBool *done) 2578 { 2579 PetscErrorCode ierr; 2580 2581 PetscFunctionBegin; 2582 ierr = MatRestoreColumnIJ_SeqBAIJ(A,oshift,symmetric,inodecompressed,n,ia,ja,done);CHKERRQ(ierr); 2583 ierr = PetscFree(*spidx);CHKERRQ(ierr); 2584 PetscFunctionReturn(0); 2585 } 2586 2587 #undef __FUNCT__ 2588 #define __FUNCT__ "MatFDColoringApply_BAIJ" 2589 PetscErrorCode MatFDColoringApply_BAIJ(Mat J,MatFDColoring coloring,Vec x1,MatStructure *flag,void *sctx) 2590 { 2591 PetscErrorCode (*f)(void*,Vec,Vec,void*) = (PetscErrorCode (*)(void*,Vec,Vec,void*))coloring->f; 2592 PetscErrorCode ierr; 2593 PetscInt bs = J->rmap->bs,i,j,k,start,end,l,row,col,*srows; 2594 PetscScalar dx,*y,*xx,*w3_array; 2595 PetscScalar *vscale_array; 2596 PetscReal epsilon = coloring->error_rel,umin = coloring->umin,unorm; 2597 Vec w1 = coloring->w1,w2=coloring->w2,w3; 2598 void *fctx = coloring->fctx; 2599 PetscBool flg = PETSC_FALSE; 2600 PetscInt ctype = coloring->ctype,N,col_start=0,col_end=0; 2601 Vec x1_tmp; 2602 2603 PetscFunctionBegin; 2604 ierr = MatSetUnfactored(J);CHKERRQ(ierr); 2605 ierr = PetscOptionsGetBool(NULL,"-mat_fd_coloring_dont_rezero",&flg,NULL);CHKERRQ(ierr); 2606 if (flg) { 2607 ierr = PetscInfo(coloring,"Not calling MatZeroEntries()\n");CHKERRQ(ierr); 2608 } else { 2609 PetscBool assembled; 2610 ierr = MatAssembled(J,&assembled);CHKERRQ(ierr); 2611 if (assembled) { 2612 ierr = MatZeroEntries(J);CHKERRQ(ierr); 2613 } 2614 } 2615 2616 x1_tmp = x1; 2617 if (!coloring->vscale) { 2618 ierr = VecDuplicate(x1_tmp,&coloring->vscale);CHKERRQ(ierr); 2619 } 2620 2621 if (coloring->htype[0] == 'w') { /* tacky test; need to make systematic if we add other approaches to computing h*/ 2622 ierr = VecNorm(x1_tmp,NORM_2,&unorm);CHKERRQ(ierr); 2623 } 2624 ierr = VecGetOwnershipRange(w1,&start,&end);CHKERRQ(ierr); /* OwnershipRange is used by ghosted x! */ 2625 2626 /* Set w1 = F(x1) */ 2627 if (!coloring->fset) { 2628 ierr = PetscLogEventBegin(MAT_FDColoringFunction,0,0,0,0);CHKERRQ(ierr); 2629 ierr = (*f)(sctx,x1_tmp,w1,fctx);CHKERRQ(ierr); 2630 ierr = PetscLogEventEnd(MAT_FDColoringFunction,0,0,0,0);CHKERRQ(ierr); 2631 } else { 2632 coloring->fset = PETSC_FALSE; 2633 } 2634 2635 if (!coloring->w3) { 2636 ierr = VecDuplicate(x1_tmp,&coloring->w3);CHKERRQ(ierr); 2637 ierr = PetscLogObjectParent((PetscObject)coloring,(PetscObject)coloring->w3);CHKERRQ(ierr); 2638 } 2639 w3 = coloring->w3; 2640 2641 /* Compute all the local scale factors, including ghost points */ 2642 ierr = VecGetLocalSize(x1_tmp,&N);CHKERRQ(ierr); 2643 ierr = VecGetArray(x1_tmp,&xx);CHKERRQ(ierr); 2644 ierr = VecGetArray(coloring->vscale,&vscale_array);CHKERRQ(ierr); 2645 if (ctype == IS_COLORING_GHOSTED) { 2646 col_start = 0; col_end = N; 2647 } else if (ctype == IS_COLORING_GLOBAL) { 2648 xx = xx - start; 2649 vscale_array = vscale_array - start; 2650 col_start = start; col_end = N + start; 2651 } 2652 for (col=col_start; col<col_end; col++) { 2653 /* Loop over each local column, vscale[col] = 1./(epsilon*dx[col]) */ 2654 if (coloring->htype[0] == 'w') { 2655 dx = 1.0 + unorm; 2656 } else { 2657 dx = xx[col]; 2658 } 2659 if (dx == (PetscScalar)0.0) dx = 1.0; 2660 if (PetscAbsScalar(dx) < umin && PetscRealPart(dx) >= 0.0) dx = umin; 2661 else if (PetscRealPart(dx) < 0.0 && PetscAbsScalar(dx) < umin) dx = -umin; 2662 dx *= epsilon; 2663 vscale_array[col] = (PetscScalar)1.0/dx; 2664 } 2665 if (ctype == IS_COLORING_GLOBAL) vscale_array = vscale_array + start; 2666 ierr = VecRestoreArray(coloring->vscale,&vscale_array);CHKERRQ(ierr); 2667 if (ctype == IS_COLORING_GLOBAL) { 2668 ierr = VecGhostUpdateBegin(coloring->vscale,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2669 ierr = VecGhostUpdateEnd(coloring->vscale,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2670 } 2671 2672 ierr = PetscMalloc(bs*sizeof(PetscInt),&srows);CHKERRQ(ierr); 2673 /* 2674 Loop over each color 2675 */ 2676 ierr = VecGetArray(coloring->vscale,&vscale_array);CHKERRQ(ierr); 2677 for (k=0; k<coloring->ncolors; k++) { 2678 coloring->currentcolor = k; 2679 for (i=0; i<bs; i++) { 2680 ierr = VecCopy(x1_tmp,w3);CHKERRQ(ierr); 2681 ierr = VecGetArray(w3,&w3_array);CHKERRQ(ierr); 2682 if (ctype == IS_COLORING_GLOBAL) w3_array = w3_array - start; 2683 /* 2684 Loop over each column associated with color 2685 adding the perturbation to the vector w3. 2686 */ 2687 for (l=0; l<coloring->ncolumns[k]; l++) { 2688 col = i + bs*coloring->columns[k][l]; /* local column of the matrix we are probing for */ 2689 if (coloring->htype[0] == 'w') { 2690 dx = 1.0 + unorm; 2691 } else { 2692 dx = xx[col]; 2693 } 2694 if (dx == (PetscScalar)0.0) dx = 1.0; 2695 if (PetscAbsScalar(dx) < umin && PetscRealPart(dx) >= 0.0) dx = umin; 2696 else if (PetscRealPart(dx) < 0.0 && PetscAbsScalar(dx) < umin) dx = -umin; 2697 dx *= epsilon; 2698 if (!PetscAbsScalar(dx)) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Computed 0 differencing parameter"); 2699 w3_array[col] += dx; 2700 } 2701 if (ctype == IS_COLORING_GLOBAL) w3_array = w3_array + start; 2702 ierr = VecRestoreArray(w3,&w3_array);CHKERRQ(ierr); 2703 2704 /* 2705 Evaluate function at w3 = x1 + dx (here dx is a vector of perturbations) 2706 w2 = F(x1 + dx) - F(x1) 2707 */ 2708 ierr = PetscLogEventBegin(MAT_FDColoringFunction,0,0,0,0);CHKERRQ(ierr); 2709 ierr = (*f)(sctx,w3,w2,fctx);CHKERRQ(ierr); 2710 ierr = PetscLogEventEnd(MAT_FDColoringFunction,0,0,0,0);CHKERRQ(ierr); 2711 ierr = VecAXPY(w2,-1.0,w1);CHKERRQ(ierr); 2712 2713 /* 2714 Loop over rows of vector, putting results into Jacobian matrix 2715 */ 2716 ierr = VecGetArray(w2,&y);CHKERRQ(ierr); 2717 for (l=0; l<coloring->nrows[k]; l++) { 2718 row = bs*coloring->rows[k][l]; /* local row index */ 2719 col = i + bs*coloring->columnsforrow[k][l]; /* global column index */ 2720 for (j=0; j<bs; j++) { 2721 y[row+j] *= vscale_array[col]; 2722 srows[j] = row + start + j; 2723 } 2724 ierr = MatSetValues(J,bs,srows,1,&col,y+row,INSERT_VALUES);CHKERRQ(ierr); 2725 } 2726 ierr = VecRestoreArray(w2,&y);CHKERRQ(ierr); 2727 } 2728 } /* endof for each color */ 2729 if (ctype == IS_COLORING_GLOBAL) xx = xx + start; 2730 ierr = VecRestoreArray(coloring->vscale,&vscale_array);CHKERRQ(ierr); 2731 ierr = VecRestoreArray(x1_tmp,&xx);CHKERRQ(ierr); 2732 ierr = PetscFree(srows);CHKERRQ(ierr); 2733 2734 coloring->currentcolor = -1; 2735 2736 ierr = MatAssemblyBegin(J,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 2737 ierr = MatAssemblyEnd(J,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 2738 PetscFunctionReturn(0); 2739 } 2740 2741 /* -------------------------------------------------------------------*/ 2742 static struct _MatOps MatOps_Values = {MatSetValues_SeqBAIJ, 2743 MatGetRow_SeqBAIJ, 2744 MatRestoreRow_SeqBAIJ, 2745 MatMult_SeqBAIJ_N, 2746 /* 4*/ MatMultAdd_SeqBAIJ_N, 2747 MatMultTranspose_SeqBAIJ, 2748 MatMultTransposeAdd_SeqBAIJ, 2749 0, 2750 0, 2751 0, 2752 /* 10*/ 0, 2753 MatLUFactor_SeqBAIJ, 2754 0, 2755 0, 2756 MatTranspose_SeqBAIJ, 2757 /* 15*/ MatGetInfo_SeqBAIJ, 2758 MatEqual_SeqBAIJ, 2759 MatGetDiagonal_SeqBAIJ, 2760 MatDiagonalScale_SeqBAIJ, 2761 MatNorm_SeqBAIJ, 2762 /* 20*/ 0, 2763 MatAssemblyEnd_SeqBAIJ, 2764 MatSetOption_SeqBAIJ, 2765 MatZeroEntries_SeqBAIJ, 2766 /* 24*/ MatZeroRows_SeqBAIJ, 2767 0, 2768 0, 2769 0, 2770 0, 2771 /* 29*/ MatSetUp_SeqBAIJ, 2772 0, 2773 0, 2774 0, 2775 0, 2776 /* 34*/ MatDuplicate_SeqBAIJ, 2777 0, 2778 0, 2779 MatILUFactor_SeqBAIJ, 2780 0, 2781 /* 39*/ MatAXPY_SeqBAIJ, 2782 MatGetSubMatrices_SeqBAIJ, 2783 MatIncreaseOverlap_SeqBAIJ, 2784 MatGetValues_SeqBAIJ, 2785 MatCopy_SeqBAIJ, 2786 /* 44*/ 0, 2787 MatScale_SeqBAIJ, 2788 0, 2789 0, 2790 MatZeroRowsColumns_SeqBAIJ, 2791 /* 49*/ 0, 2792 MatGetRowIJ_SeqBAIJ, 2793 MatRestoreRowIJ_SeqBAIJ, 2794 MatGetColumnIJ_SeqBAIJ, 2795 MatRestoreColumnIJ_SeqBAIJ, 2796 /* 54*/ MatFDColoringCreate_SeqAIJ, 2797 0, 2798 0, 2799 0, 2800 MatSetValuesBlocked_SeqBAIJ, 2801 /* 59*/ MatGetSubMatrix_SeqBAIJ, 2802 MatDestroy_SeqBAIJ, 2803 MatView_SeqBAIJ, 2804 0, 2805 0, 2806 /* 64*/ 0, 2807 0, 2808 0, 2809 0, 2810 0, 2811 /* 69*/ MatGetRowMaxAbs_SeqBAIJ, 2812 0, 2813 MatConvert_Basic, 2814 0, 2815 0, 2816 /* 74*/ 0, 2817 MatFDColoringApply_BAIJ, 2818 0, 2819 0, 2820 0, 2821 /* 79*/ 0, 2822 0, 2823 0, 2824 0, 2825 MatLoad_SeqBAIJ, 2826 /* 84*/ 0, 2827 0, 2828 0, 2829 0, 2830 0, 2831 /* 89*/ 0, 2832 0, 2833 0, 2834 0, 2835 0, 2836 /* 94*/ 0, 2837 0, 2838 0, 2839 0, 2840 0, 2841 /* 99*/ 0, 2842 0, 2843 0, 2844 0, 2845 0, 2846 /*104*/ 0, 2847 MatRealPart_SeqBAIJ, 2848 MatImaginaryPart_SeqBAIJ, 2849 0, 2850 0, 2851 /*109*/ 0, 2852 0, 2853 0, 2854 0, 2855 MatMissingDiagonal_SeqBAIJ, 2856 /*114*/ 0, 2857 0, 2858 0, 2859 0, 2860 0, 2861 /*119*/ 0, 2862 0, 2863 MatMultHermitianTranspose_SeqBAIJ, 2864 MatMultHermitianTransposeAdd_SeqBAIJ, 2865 0, 2866 /*124*/ 0, 2867 0, 2868 MatInvertBlockDiagonal_SeqBAIJ, 2869 0, 2870 0, 2871 /*129*/ 0, 2872 0, 2873 0, 2874 0, 2875 0, 2876 /*134*/ 0, 2877 0, 2878 0, 2879 0, 2880 0, 2881 /*139*/ 0, 2882 0 2883 }; 2884 2885 #undef __FUNCT__ 2886 #define __FUNCT__ "MatStoreValues_SeqBAIJ" 2887 PetscErrorCode MatStoreValues_SeqBAIJ(Mat mat) 2888 { 2889 Mat_SeqBAIJ *aij = (Mat_SeqBAIJ*)mat->data; 2890 PetscInt nz = aij->i[aij->mbs]*aij->bs2; 2891 PetscErrorCode ierr; 2892 2893 PetscFunctionBegin; 2894 if (aij->nonew != 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"Must call MatSetOption(A,MAT_NEW_NONZERO_LOCATIONS,PETSC_FALSE);first"); 2895 2896 /* allocate space for values if not already there */ 2897 if (!aij->saved_values) { 2898 ierr = PetscMalloc((nz+1)*sizeof(PetscScalar),&aij->saved_values);CHKERRQ(ierr); 2899 ierr = PetscLogObjectMemory((PetscObject)mat,(nz+1)*sizeof(PetscScalar));CHKERRQ(ierr); 2900 } 2901 2902 /* copy values over */ 2903 ierr = PetscMemcpy(aij->saved_values,aij->a,nz*sizeof(PetscScalar));CHKERRQ(ierr); 2904 PetscFunctionReturn(0); 2905 } 2906 2907 #undef __FUNCT__ 2908 #define __FUNCT__ "MatRetrieveValues_SeqBAIJ" 2909 PetscErrorCode MatRetrieveValues_SeqBAIJ(Mat mat) 2910 { 2911 Mat_SeqBAIJ *aij = (Mat_SeqBAIJ*)mat->data; 2912 PetscErrorCode ierr; 2913 PetscInt nz = aij->i[aij->mbs]*aij->bs2; 2914 2915 PetscFunctionBegin; 2916 if (aij->nonew != 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"Must call MatSetOption(A,MAT_NEW_NONZERO_LOCATIONS,PETSC_FALSE);first"); 2917 if (!aij->saved_values) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER,"Must call MatStoreValues(A);first"); 2918 2919 /* copy values over */ 2920 ierr = PetscMemcpy(aij->a,aij->saved_values,nz*sizeof(PetscScalar));CHKERRQ(ierr); 2921 PetscFunctionReturn(0); 2922 } 2923 2924 PETSC_EXTERN PetscErrorCode MatConvert_SeqBAIJ_SeqAIJ(Mat, MatType,MatReuse,Mat*); 2925 PETSC_EXTERN PetscErrorCode MatConvert_SeqBAIJ_SeqSBAIJ(Mat, MatType,MatReuse,Mat*); 2926 2927 #undef __FUNCT__ 2928 #define __FUNCT__ "MatSeqBAIJSetPreallocation_SeqBAIJ" 2929 PetscErrorCode MatSeqBAIJSetPreallocation_SeqBAIJ(Mat B,PetscInt bs,PetscInt nz,PetscInt *nnz) 2930 { 2931 Mat_SeqBAIJ *b; 2932 PetscErrorCode ierr; 2933 PetscInt i,mbs,nbs,bs2; 2934 PetscBool flg,skipallocation = PETSC_FALSE,realalloc = PETSC_FALSE; 2935 2936 PetscFunctionBegin; 2937 if (nz >= 0 || nnz) realalloc = PETSC_TRUE; 2938 if (nz == MAT_SKIP_ALLOCATION) { 2939 skipallocation = PETSC_TRUE; 2940 nz = 0; 2941 } 2942 2943 ierr = PetscLayoutSetBlockSize(B->rmap,bs);CHKERRQ(ierr); 2944 ierr = PetscLayoutSetBlockSize(B->cmap,bs);CHKERRQ(ierr); 2945 ierr = PetscLayoutSetUp(B->rmap);CHKERRQ(ierr); 2946 ierr = PetscLayoutSetUp(B->cmap);CHKERRQ(ierr); 2947 ierr = PetscLayoutGetBlockSize(B->rmap,&bs);CHKERRQ(ierr); 2948 2949 B->preallocated = PETSC_TRUE; 2950 2951 mbs = B->rmap->n/bs; 2952 nbs = B->cmap->n/bs; 2953 bs2 = bs*bs; 2954 2955 if (mbs*bs!=B->rmap->n || nbs*bs!=B->cmap->n) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Number rows %D, cols %D must be divisible by blocksize %D",B->rmap->N,B->cmap->n,bs); 2956 2957 if (nz == PETSC_DEFAULT || nz == PETSC_DECIDE) nz = 5; 2958 if (nz < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"nz cannot be less than 0: value %D",nz); 2959 if (nnz) { 2960 for (i=0; i<mbs; i++) { 2961 if (nnz[i] < 0) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"nnz cannot be less than 0: local row %D value %D",i,nnz[i]); 2962 if (nnz[i] > nbs) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"nnz cannot be greater than block row length: local row %D value %D rowlength %D",i,nnz[i],nbs); 2963 } 2964 } 2965 2966 b = (Mat_SeqBAIJ*)B->data; 2967 ierr = PetscOptionsBegin(PetscObjectComm((PetscObject)B),NULL,"Optimize options for SEQBAIJ matrix 2 ","Mat");CHKERRQ(ierr); 2968 ierr = PetscOptionsBool("-mat_no_unroll","Do not optimize for block size (slow)",NULL,PETSC_FALSE,&flg,NULL);CHKERRQ(ierr); 2969 ierr = PetscOptionsEnd();CHKERRQ(ierr); 2970 2971 if (!flg) { 2972 switch (bs) { 2973 case 1: 2974 B->ops->mult = MatMult_SeqBAIJ_1; 2975 B->ops->multadd = MatMultAdd_SeqBAIJ_1; 2976 break; 2977 case 2: 2978 B->ops->mult = MatMult_SeqBAIJ_2; 2979 B->ops->multadd = MatMultAdd_SeqBAIJ_2; 2980 break; 2981 case 3: 2982 B->ops->mult = MatMult_SeqBAIJ_3; 2983 B->ops->multadd = MatMultAdd_SeqBAIJ_3; 2984 break; 2985 case 4: 2986 B->ops->mult = MatMult_SeqBAIJ_4; 2987 B->ops->multadd = MatMultAdd_SeqBAIJ_4; 2988 break; 2989 case 5: 2990 B->ops->mult = MatMult_SeqBAIJ_5; 2991 B->ops->multadd = MatMultAdd_SeqBAIJ_5; 2992 break; 2993 case 6: 2994 B->ops->mult = MatMult_SeqBAIJ_6; 2995 B->ops->multadd = MatMultAdd_SeqBAIJ_6; 2996 break; 2997 case 7: 2998 B->ops->mult = MatMult_SeqBAIJ_7; 2999 B->ops->multadd = MatMultAdd_SeqBAIJ_7; 3000 break; 3001 case 15: 3002 B->ops->mult = MatMult_SeqBAIJ_15_ver1; 3003 B->ops->multadd = MatMultAdd_SeqBAIJ_N; 3004 break; 3005 default: 3006 B->ops->mult = MatMult_SeqBAIJ_N; 3007 B->ops->multadd = MatMultAdd_SeqBAIJ_N; 3008 break; 3009 } 3010 } 3011 B->ops->sor = MatSOR_SeqBAIJ; 3012 b->mbs = mbs; 3013 b->nbs = nbs; 3014 if (!skipallocation) { 3015 if (!b->imax) { 3016 ierr = PetscMalloc2(mbs,PetscInt,&b->imax,mbs,PetscInt,&b->ilen);CHKERRQ(ierr); 3017 ierr = PetscLogObjectMemory((PetscObject)B,2*mbs*sizeof(PetscInt));CHKERRQ(ierr); 3018 3019 b->free_imax_ilen = PETSC_TRUE; 3020 } 3021 /* b->ilen will count nonzeros in each block row so far. */ 3022 for (i=0; i<mbs; i++) b->ilen[i] = 0; 3023 if (!nnz) { 3024 if (nz == PETSC_DEFAULT || nz == PETSC_DECIDE) nz = 5; 3025 else if (nz < 0) nz = 1; 3026 for (i=0; i<mbs; i++) b->imax[i] = nz; 3027 nz = nz*mbs; 3028 } else { 3029 nz = 0; 3030 for (i=0; i<mbs; i++) {b->imax[i] = nnz[i]; nz += nnz[i];} 3031 } 3032 3033 /* allocate the matrix space */ 3034 ierr = MatSeqXAIJFreeAIJ(B,&b->a,&b->j,&b->i);CHKERRQ(ierr); 3035 ierr = PetscMalloc3(bs2*nz,PetscScalar,&b->a,nz,PetscInt,&b->j,B->rmap->N+1,PetscInt,&b->i);CHKERRQ(ierr); 3036 ierr = PetscLogObjectMemory((PetscObject)B,(B->rmap->N+1)*sizeof(PetscInt)+nz*(bs2*sizeof(PetscScalar)+sizeof(PetscInt)));CHKERRQ(ierr); 3037 ierr = PetscMemzero(b->a,nz*bs2*sizeof(MatScalar));CHKERRQ(ierr); 3038 ierr = PetscMemzero(b->j,nz*sizeof(PetscInt));CHKERRQ(ierr); 3039 3040 b->singlemalloc = PETSC_TRUE; 3041 b->i[0] = 0; 3042 for (i=1; i<mbs+1; i++) { 3043 b->i[i] = b->i[i-1] + b->imax[i-1]; 3044 } 3045 b->free_a = PETSC_TRUE; 3046 b->free_ij = PETSC_TRUE; 3047 } else { 3048 b->free_a = PETSC_FALSE; 3049 b->free_ij = PETSC_FALSE; 3050 } 3051 3052 b->bs2 = bs2; 3053 b->mbs = mbs; 3054 b->nz = 0; 3055 b->maxnz = nz; 3056 B->info.nz_unneeded = (PetscReal)b->maxnz*bs2; 3057 if (realalloc) {ierr = MatSetOption(B,MAT_NEW_NONZERO_ALLOCATION_ERR,PETSC_TRUE);CHKERRQ(ierr);} 3058 PetscFunctionReturn(0); 3059 } 3060 3061 #undef __FUNCT__ 3062 #define __FUNCT__ "MatSeqBAIJSetPreallocationCSR_SeqBAIJ" 3063 PetscErrorCode MatSeqBAIJSetPreallocationCSR_SeqBAIJ(Mat B,PetscInt bs,const PetscInt ii[],const PetscInt jj[],const PetscScalar V[]) 3064 { 3065 PetscInt i,m,nz,nz_max=0,*nnz; 3066 PetscScalar *values=0; 3067 PetscErrorCode ierr; 3068 3069 PetscFunctionBegin; 3070 if (bs < 1) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Invalid block size specified, must be positive but it is %D",bs); 3071 ierr = PetscLayoutSetBlockSize(B->rmap,bs);CHKERRQ(ierr); 3072 ierr = PetscLayoutSetBlockSize(B->cmap,bs);CHKERRQ(ierr); 3073 ierr = PetscLayoutSetUp(B->rmap);CHKERRQ(ierr); 3074 ierr = PetscLayoutSetUp(B->cmap);CHKERRQ(ierr); 3075 ierr = PetscLayoutGetBlockSize(B->rmap,&bs);CHKERRQ(ierr); 3076 m = B->rmap->n/bs; 3077 3078 if (ii[0] != 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE, "ii[0] must be 0 but it is %D",ii[0]); 3079 ierr = PetscMalloc((m+1) * sizeof(PetscInt), &nnz);CHKERRQ(ierr); 3080 for (i=0; i<m; i++) { 3081 nz = ii[i+1]- ii[i]; 3082 if (nz < 0) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE, "Local row %D has a negative number of columns %D",i,nz); 3083 nz_max = PetscMax(nz_max, nz); 3084 nnz[i] = nz; 3085 } 3086 ierr = MatSeqBAIJSetPreallocation(B,bs,0,nnz);CHKERRQ(ierr); 3087 ierr = PetscFree(nnz);CHKERRQ(ierr); 3088 3089 values = (PetscScalar*)V; 3090 if (!values) { 3091 ierr = PetscMalloc(bs*bs*(nz_max+1)*sizeof(PetscScalar),&values);CHKERRQ(ierr); 3092 ierr = PetscMemzero(values,bs*bs*nz_max*sizeof(PetscScalar));CHKERRQ(ierr); 3093 } 3094 for (i=0; i<m; i++) { 3095 PetscInt ncols = ii[i+1] - ii[i]; 3096 const PetscInt *icols = jj + ii[i]; 3097 const PetscScalar *svals = values + (V ? (bs*bs*ii[i]) : 0); 3098 ierr = MatSetValuesBlocked_SeqBAIJ(B,1,&i,ncols,icols,svals,INSERT_VALUES);CHKERRQ(ierr); 3099 } 3100 if (!V) { ierr = PetscFree(values);CHKERRQ(ierr); } 3101 ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 3102 ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 3103 ierr = MatSetOption(B,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_TRUE);CHKERRQ(ierr); 3104 PetscFunctionReturn(0); 3105 } 3106 3107 PETSC_EXTERN PetscErrorCode MatGetFactor_seqbaij_petsc(Mat,MatFactorType,Mat*); 3108 PETSC_EXTERN PetscErrorCode MatGetFactor_seqbaij_bstrm(Mat,MatFactorType,Mat*); 3109 #if defined(PETSC_HAVE_MUMPS) 3110 PETSC_EXTERN PetscErrorCode MatGetFactor_baij_mumps(Mat,MatFactorType,Mat*); 3111 #endif 3112 extern PetscErrorCode MatGetFactorAvailable_seqbaij_petsc(Mat,MatFactorType,PetscBool*); 3113 3114 /*MC 3115 MATSEQBAIJ - MATSEQBAIJ = "seqbaij" - A matrix type to be used for sequential block sparse matrices, based on 3116 block sparse compressed row format. 3117 3118 Options Database Keys: 3119 . -mat_type seqbaij - sets the matrix type to "seqbaij" during a call to MatSetFromOptions() 3120 3121 Level: beginner 3122 3123 .seealso: MatCreateSeqBAIJ() 3124 M*/ 3125 3126 PETSC_EXTERN PetscErrorCode MatConvert_SeqBAIJ_SeqBSTRM(Mat, MatType,MatReuse,Mat*); 3127 3128 #undef __FUNCT__ 3129 #define __FUNCT__ "MatCreate_SeqBAIJ" 3130 PETSC_EXTERN PetscErrorCode MatCreate_SeqBAIJ(Mat B) 3131 { 3132 PetscErrorCode ierr; 3133 PetscMPIInt size; 3134 Mat_SeqBAIJ *b; 3135 3136 PetscFunctionBegin; 3137 ierr = MPI_Comm_size(PetscObjectComm((PetscObject)B),&size);CHKERRQ(ierr); 3138 if (size > 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Comm must be of size 1"); 3139 3140 ierr = PetscNewLog(B,Mat_SeqBAIJ,&b);CHKERRQ(ierr); 3141 B->data = (void*)b; 3142 ierr = PetscMemcpy(B->ops,&MatOps_Values,sizeof(struct _MatOps));CHKERRQ(ierr); 3143 3144 b->row = 0; 3145 b->col = 0; 3146 b->icol = 0; 3147 b->reallocs = 0; 3148 b->saved_values = 0; 3149 3150 b->roworiented = PETSC_TRUE; 3151 b->nonew = 0; 3152 b->diag = 0; 3153 b->solve_work = 0; 3154 b->mult_work = 0; 3155 B->spptr = 0; 3156 B->info.nz_unneeded = (PetscReal)b->maxnz*b->bs2; 3157 b->keepnonzeropattern = PETSC_FALSE; 3158 b->xtoy = 0; 3159 b->XtoY = 0; 3160 B->same_nonzero = PETSC_FALSE; 3161 3162 ierr = PetscObjectComposeFunction((PetscObject)B,"MatGetFactorAvailable_petsc_C",MatGetFactorAvailable_seqbaij_petsc);CHKERRQ(ierr); 3163 ierr = PetscObjectComposeFunction((PetscObject)B,"MatGetFactor_petsc_C",MatGetFactor_seqbaij_petsc);CHKERRQ(ierr); 3164 ierr = PetscObjectComposeFunction((PetscObject)B,"MatGetFactor_bstrm_C",MatGetFactor_seqbaij_bstrm);CHKERRQ(ierr); 3165 #if defined(PETSC_HAVE_MUMPS) 3166 ierr = PetscObjectComposeFunction((PetscObject)B,"MatGetFactor_mumps_C", MatGetFactor_baij_mumps);CHKERRQ(ierr); 3167 #endif 3168 ierr = PetscObjectComposeFunction((PetscObject)B,"MatInvertBlockDiagonal_C",MatInvertBlockDiagonal_SeqBAIJ);CHKERRQ(ierr); 3169 ierr = PetscObjectComposeFunction((PetscObject)B,"MatStoreValues_C",MatStoreValues_SeqBAIJ);CHKERRQ(ierr); 3170 ierr = PetscObjectComposeFunction((PetscObject)B,"MatRetrieveValues_C",MatRetrieveValues_SeqBAIJ);CHKERRQ(ierr); 3171 ierr = PetscObjectComposeFunction((PetscObject)B,"MatSeqBAIJSetColumnIndices_C",MatSeqBAIJSetColumnIndices_SeqBAIJ);CHKERRQ(ierr); 3172 ierr = PetscObjectComposeFunction((PetscObject)B,"MatConvert_seqbaij_seqaij_C",MatConvert_SeqBAIJ_SeqAIJ);CHKERRQ(ierr); 3173 ierr = PetscObjectComposeFunction((PetscObject)B,"MatConvert_seqbaij_seqsbaij_C",MatConvert_SeqBAIJ_SeqSBAIJ);CHKERRQ(ierr); 3174 ierr = PetscObjectComposeFunction((PetscObject)B,"MatSeqBAIJSetPreallocation_C",MatSeqBAIJSetPreallocation_SeqBAIJ);CHKERRQ(ierr); 3175 ierr = PetscObjectComposeFunction((PetscObject)B,"MatSeqBAIJSetPreallocationCSR_C",MatSeqBAIJSetPreallocationCSR_SeqBAIJ);CHKERRQ(ierr); 3176 ierr = PetscObjectComposeFunction((PetscObject)B,"MatConvert_seqbaij_seqbstrm_C",MatConvert_SeqBAIJ_SeqBSTRM);CHKERRQ(ierr); 3177 ierr = PetscObjectComposeFunction((PetscObject)B,"MatIsTranspose_C",MatIsTranspose_SeqBAIJ);CHKERRQ(ierr); 3178 ierr = PetscObjectChangeTypeName((PetscObject)B,MATSEQBAIJ);CHKERRQ(ierr); 3179 PetscFunctionReturn(0); 3180 } 3181 3182 #undef __FUNCT__ 3183 #define __FUNCT__ "MatDuplicateNoCreate_SeqBAIJ" 3184 PetscErrorCode MatDuplicateNoCreate_SeqBAIJ(Mat C,Mat A,MatDuplicateOption cpvalues,PetscBool mallocmatspace) 3185 { 3186 Mat_SeqBAIJ *c = (Mat_SeqBAIJ*)C->data,*a = (Mat_SeqBAIJ*)A->data; 3187 PetscErrorCode ierr; 3188 PetscInt i,mbs = a->mbs,nz = a->nz,bs2 = a->bs2; 3189 3190 PetscFunctionBegin; 3191 if (a->i[mbs] != nz) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Corrupt matrix"); 3192 3193 if (cpvalues == MAT_SHARE_NONZERO_PATTERN) { 3194 c->imax = a->imax; 3195 c->ilen = a->ilen; 3196 c->free_imax_ilen = PETSC_FALSE; 3197 } else { 3198 ierr = PetscMalloc2(mbs,PetscInt,&c->imax,mbs,PetscInt,&c->ilen);CHKERRQ(ierr); 3199 ierr = PetscLogObjectMemory((PetscObject)C,2*mbs*sizeof(PetscInt));CHKERRQ(ierr); 3200 for (i=0; i<mbs; i++) { 3201 c->imax[i] = a->imax[i]; 3202 c->ilen[i] = a->ilen[i]; 3203 } 3204 c->free_imax_ilen = PETSC_TRUE; 3205 } 3206 3207 /* allocate the matrix space */ 3208 if (mallocmatspace) { 3209 if (cpvalues == MAT_SHARE_NONZERO_PATTERN) { 3210 ierr = PetscMalloc(bs2*nz*sizeof(PetscScalar),&c->a);CHKERRQ(ierr); 3211 ierr = PetscLogObjectMemory((PetscObject)C,a->i[mbs]*bs2*sizeof(PetscScalar));CHKERRQ(ierr); 3212 ierr = PetscMemzero(c->a,bs2*nz*sizeof(PetscScalar));CHKERRQ(ierr); 3213 3214 c->i = a->i; 3215 c->j = a->j; 3216 c->singlemalloc = PETSC_FALSE; 3217 c->free_a = PETSC_TRUE; 3218 c->free_ij = PETSC_FALSE; 3219 c->parent = A; 3220 C->preallocated = PETSC_TRUE; 3221 C->assembled = PETSC_TRUE; 3222 3223 ierr = PetscObjectReference((PetscObject)A);CHKERRQ(ierr); 3224 ierr = MatSetOption(A,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_TRUE);CHKERRQ(ierr); 3225 ierr = MatSetOption(C,MAT_NEW_NONZERO_LOCATION_ERR,PETSC_TRUE);CHKERRQ(ierr); 3226 } else { 3227 ierr = PetscMalloc3(bs2*nz,PetscScalar,&c->a,nz,PetscInt,&c->j,mbs+1,PetscInt,&c->i);CHKERRQ(ierr); 3228 ierr = PetscLogObjectMemory((PetscObject)C,a->i[mbs]*(bs2*sizeof(PetscScalar)+sizeof(PetscInt))+(mbs+1)*sizeof(PetscInt));CHKERRQ(ierr); 3229 3230 c->singlemalloc = PETSC_TRUE; 3231 c->free_a = PETSC_TRUE; 3232 c->free_ij = PETSC_TRUE; 3233 3234 ierr = PetscMemcpy(c->i,a->i,(mbs+1)*sizeof(PetscInt));CHKERRQ(ierr); 3235 if (mbs > 0) { 3236 ierr = PetscMemcpy(c->j,a->j,nz*sizeof(PetscInt));CHKERRQ(ierr); 3237 if (cpvalues == MAT_COPY_VALUES) { 3238 ierr = PetscMemcpy(c->a,a->a,bs2*nz*sizeof(MatScalar));CHKERRQ(ierr); 3239 } else { 3240 ierr = PetscMemzero(c->a,bs2*nz*sizeof(MatScalar));CHKERRQ(ierr); 3241 } 3242 } 3243 C->preallocated = PETSC_TRUE; 3244 C->assembled = PETSC_TRUE; 3245 } 3246 } 3247 3248 c->roworiented = a->roworiented; 3249 c->nonew = a->nonew; 3250 3251 ierr = PetscLayoutReference(A->rmap,&C->rmap);CHKERRQ(ierr); 3252 ierr = PetscLayoutReference(A->cmap,&C->cmap);CHKERRQ(ierr); 3253 3254 c->bs2 = a->bs2; 3255 c->mbs = a->mbs; 3256 c->nbs = a->nbs; 3257 3258 if (a->diag) { 3259 if (cpvalues == MAT_SHARE_NONZERO_PATTERN) { 3260 c->diag = a->diag; 3261 c->free_diag = PETSC_FALSE; 3262 } else { 3263 ierr = PetscMalloc((mbs+1)*sizeof(PetscInt),&c->diag);CHKERRQ(ierr); 3264 ierr = PetscLogObjectMemory((PetscObject)C,(mbs+1)*sizeof(PetscInt));CHKERRQ(ierr); 3265 for (i=0; i<mbs; i++) c->diag[i] = a->diag[i]; 3266 c->free_diag = PETSC_TRUE; 3267 } 3268 } else c->diag = 0; 3269 3270 c->nz = a->nz; 3271 c->maxnz = a->nz; /* Since we allocate exactly the right amount */ 3272 c->solve_work = 0; 3273 c->mult_work = 0; 3274 3275 c->compressedrow.use = a->compressedrow.use; 3276 c->compressedrow.nrows = a->compressedrow.nrows; 3277 c->compressedrow.check = a->compressedrow.check; 3278 if (a->compressedrow.use) { 3279 i = a->compressedrow.nrows; 3280 ierr = PetscMalloc2(i+1,PetscInt,&c->compressedrow.i,i+1,PetscInt,&c->compressedrow.rindex);CHKERRQ(ierr); 3281 ierr = PetscLogObjectMemory((PetscObject)C,(2*i+1)*sizeof(PetscInt));CHKERRQ(ierr); 3282 ierr = PetscMemcpy(c->compressedrow.i,a->compressedrow.i,(i+1)*sizeof(PetscInt));CHKERRQ(ierr); 3283 ierr = PetscMemcpy(c->compressedrow.rindex,a->compressedrow.rindex,i*sizeof(PetscInt));CHKERRQ(ierr); 3284 } else { 3285 c->compressedrow.use = PETSC_FALSE; 3286 c->compressedrow.i = NULL; 3287 c->compressedrow.rindex = NULL; 3288 } 3289 C->same_nonzero = A->same_nonzero; 3290 3291 ierr = PetscFunctionListDuplicate(((PetscObject)A)->qlist,&((PetscObject)C)->qlist);CHKERRQ(ierr); 3292 ierr = PetscMemcpy(C->ops,A->ops,sizeof(struct _MatOps));CHKERRQ(ierr); 3293 PetscFunctionReturn(0); 3294 } 3295 3296 #undef __FUNCT__ 3297 #define __FUNCT__ "MatDuplicate_SeqBAIJ" 3298 PetscErrorCode MatDuplicate_SeqBAIJ(Mat A,MatDuplicateOption cpvalues,Mat *B) 3299 { 3300 PetscErrorCode ierr; 3301 3302 PetscFunctionBegin; 3303 ierr = MatCreate(PetscObjectComm((PetscObject)A),B);CHKERRQ(ierr); 3304 ierr = MatSetSizes(*B,A->rmap->N,A->cmap->n,A->rmap->N,A->cmap->n);CHKERRQ(ierr); 3305 ierr = MatSetType(*B,MATSEQBAIJ);CHKERRQ(ierr); 3306 ierr = MatDuplicateNoCreate_SeqBAIJ(*B,A,cpvalues,PETSC_TRUE);CHKERRQ(ierr); 3307 PetscFunctionReturn(0); 3308 } 3309 3310 #undef __FUNCT__ 3311 #define __FUNCT__ "MatLoad_SeqBAIJ" 3312 PetscErrorCode MatLoad_SeqBAIJ(Mat newmat,PetscViewer viewer) 3313 { 3314 Mat_SeqBAIJ *a; 3315 PetscErrorCode ierr; 3316 PetscInt i,nz,header[4],*rowlengths=0,M,N,bs=1; 3317 PetscInt *mask,mbs,*jj,j,rowcount,nzcount,k,*browlengths,maskcount; 3318 PetscInt kmax,jcount,block,idx,point,nzcountb,extra_rows,rows,cols; 3319 PetscInt *masked,nmask,tmp,bs2,ishift; 3320 PetscMPIInt size; 3321 int fd; 3322 PetscScalar *aa; 3323 MPI_Comm comm; 3324 3325 PetscFunctionBegin; 3326 ierr = PetscObjectGetComm((PetscObject)viewer,&comm);CHKERRQ(ierr); 3327 ierr = PetscOptionsBegin(comm,NULL,"Options for loading SEQBAIJ matrix","Mat");CHKERRQ(ierr); 3328 ierr = PetscOptionsInt("-matload_block_size","Set the blocksize used to store the matrix","MatLoad",bs,&bs,NULL);CHKERRQ(ierr); 3329 ierr = PetscOptionsEnd();CHKERRQ(ierr); 3330 bs2 = bs*bs; 3331 3332 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 3333 if (size > 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"view must have one processor"); 3334 ierr = PetscViewerBinaryGetDescriptor(viewer,&fd);CHKERRQ(ierr); 3335 ierr = PetscBinaryRead(fd,header,4,PETSC_INT);CHKERRQ(ierr); 3336 if (header[0] != MAT_FILE_CLASSID) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED,"not Mat object"); 3337 M = header[1]; N = header[2]; nz = header[3]; 3338 3339 if (header[3] < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED,"Matrix stored in special format, cannot load as SeqBAIJ"); 3340 if (M != N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Can only do square matrices"); 3341 3342 /* 3343 This code adds extra rows to make sure the number of rows is 3344 divisible by the blocksize 3345 */ 3346 mbs = M/bs; 3347 extra_rows = bs - M + bs*(mbs); 3348 if (extra_rows == bs) extra_rows = 0; 3349 else mbs++; 3350 if (extra_rows) { 3351 ierr = PetscInfo(viewer,"Padding loaded matrix to match blocksize\n");CHKERRQ(ierr); 3352 } 3353 3354 /* Set global sizes if not already set */ 3355 if (newmat->rmap->n < 0 && newmat->rmap->N < 0 && newmat->cmap->n < 0 && newmat->cmap->N < 0) { 3356 ierr = MatSetSizes(newmat,PETSC_DECIDE,PETSC_DECIDE,M+extra_rows,N+extra_rows);CHKERRQ(ierr); 3357 } else { /* Check if the matrix global sizes are correct */ 3358 ierr = MatGetSize(newmat,&rows,&cols);CHKERRQ(ierr); 3359 if (rows < 0 && cols < 0) { /* user might provide local size instead of global size */ 3360 ierr = MatGetLocalSize(newmat,&rows,&cols);CHKERRQ(ierr); 3361 } 3362 if (M != rows || N != cols) SETERRQ4(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED,"Matrix in file of different length (%d, %d) than the input matrix (%d, %d)",M,N,rows,cols); 3363 } 3364 3365 /* read in row lengths */ 3366 ierr = PetscMalloc((M+extra_rows)*sizeof(PetscInt),&rowlengths);CHKERRQ(ierr); 3367 ierr = PetscBinaryRead(fd,rowlengths,M,PETSC_INT);CHKERRQ(ierr); 3368 for (i=0; i<extra_rows; i++) rowlengths[M+i] = 1; 3369 3370 /* read in column indices */ 3371 ierr = PetscMalloc((nz+extra_rows)*sizeof(PetscInt),&jj);CHKERRQ(ierr); 3372 ierr = PetscBinaryRead(fd,jj,nz,PETSC_INT);CHKERRQ(ierr); 3373 for (i=0; i<extra_rows; i++) jj[nz+i] = M+i; 3374 3375 /* loop over row lengths determining block row lengths */ 3376 ierr = PetscMalloc(mbs*sizeof(PetscInt),&browlengths);CHKERRQ(ierr); 3377 ierr = PetscMemzero(browlengths,mbs*sizeof(PetscInt));CHKERRQ(ierr); 3378 ierr = PetscMalloc2(mbs,PetscInt,&mask,mbs,PetscInt,&masked);CHKERRQ(ierr); 3379 ierr = PetscMemzero(mask,mbs*sizeof(PetscInt));CHKERRQ(ierr); 3380 rowcount = 0; 3381 nzcount = 0; 3382 for (i=0; i<mbs; i++) { 3383 nmask = 0; 3384 for (j=0; j<bs; j++) { 3385 kmax = rowlengths[rowcount]; 3386 for (k=0; k<kmax; k++) { 3387 tmp = jj[nzcount++]/bs; 3388 if (!mask[tmp]) {masked[nmask++] = tmp; mask[tmp] = 1;} 3389 } 3390 rowcount++; 3391 } 3392 browlengths[i] += nmask; 3393 /* zero out the mask elements we set */ 3394 for (j=0; j<nmask; j++) mask[masked[j]] = 0; 3395 } 3396 3397 /* Do preallocation */ 3398 ierr = MatSeqBAIJSetPreallocation_SeqBAIJ(newmat,bs,0,browlengths);CHKERRQ(ierr); 3399 a = (Mat_SeqBAIJ*)newmat->data; 3400 3401 /* set matrix "i" values */ 3402 a->i[0] = 0; 3403 for (i=1; i<= mbs; i++) { 3404 a->i[i] = a->i[i-1] + browlengths[i-1]; 3405 a->ilen[i-1] = browlengths[i-1]; 3406 } 3407 a->nz = 0; 3408 for (i=0; i<mbs; i++) a->nz += browlengths[i]; 3409 3410 /* read in nonzero values */ 3411 ierr = PetscMalloc((nz+extra_rows)*sizeof(PetscScalar),&aa);CHKERRQ(ierr); 3412 ierr = PetscBinaryRead(fd,aa,nz,PETSC_SCALAR);CHKERRQ(ierr); 3413 for (i=0; i<extra_rows; i++) aa[nz+i] = 1.0; 3414 3415 /* set "a" and "j" values into matrix */ 3416 nzcount = 0; jcount = 0; 3417 for (i=0; i<mbs; i++) { 3418 nzcountb = nzcount; 3419 nmask = 0; 3420 for (j=0; j<bs; j++) { 3421 kmax = rowlengths[i*bs+j]; 3422 for (k=0; k<kmax; k++) { 3423 tmp = jj[nzcount++]/bs; 3424 if (!mask[tmp]) { masked[nmask++] = tmp; mask[tmp] = 1;} 3425 } 3426 } 3427 /* sort the masked values */ 3428 ierr = PetscSortInt(nmask,masked);CHKERRQ(ierr); 3429 3430 /* set "j" values into matrix */ 3431 maskcount = 1; 3432 for (j=0; j<nmask; j++) { 3433 a->j[jcount++] = masked[j]; 3434 mask[masked[j]] = maskcount++; 3435 } 3436 /* set "a" values into matrix */ 3437 ishift = bs2*a->i[i]; 3438 for (j=0; j<bs; j++) { 3439 kmax = rowlengths[i*bs+j]; 3440 for (k=0; k<kmax; k++) { 3441 tmp = jj[nzcountb]/bs; 3442 block = mask[tmp] - 1; 3443 point = jj[nzcountb] - bs*tmp; 3444 idx = ishift + bs2*block + j + bs*point; 3445 a->a[idx] = (MatScalar)aa[nzcountb++]; 3446 } 3447 } 3448 /* zero out the mask elements we set */ 3449 for (j=0; j<nmask; j++) mask[masked[j]] = 0; 3450 } 3451 if (jcount != a->nz) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED,"Bad binary matrix"); 3452 3453 ierr = PetscFree(rowlengths);CHKERRQ(ierr); 3454 ierr = PetscFree(browlengths);CHKERRQ(ierr); 3455 ierr = PetscFree(aa);CHKERRQ(ierr); 3456 ierr = PetscFree(jj);CHKERRQ(ierr); 3457 ierr = PetscFree2(mask,masked);CHKERRQ(ierr); 3458 3459 ierr = MatAssemblyBegin(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 3460 ierr = MatAssemblyEnd(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 3461 PetscFunctionReturn(0); 3462 } 3463 3464 #undef __FUNCT__ 3465 #define __FUNCT__ "MatCreateSeqBAIJ" 3466 /*@C 3467 MatCreateSeqBAIJ - Creates a sparse matrix in block AIJ (block 3468 compressed row) format. For good matrix assembly performance the 3469 user should preallocate the matrix storage by setting the parameter nz 3470 (or the array nnz). By setting these parameters accurately, performance 3471 during matrix assembly can be increased by more than a factor of 50. 3472 3473 Collective on MPI_Comm 3474 3475 Input Parameters: 3476 + comm - MPI communicator, set to PETSC_COMM_SELF 3477 . bs - size of block 3478 . m - number of rows 3479 . n - number of columns 3480 . nz - number of nonzero blocks per block row (same for all rows) 3481 - nnz - array containing the number of nonzero blocks in the various block rows 3482 (possibly different for each block row) or NULL 3483 3484 Output Parameter: 3485 . A - the matrix 3486 3487 It is recommended that one use the MatCreate(), MatSetType() and/or MatSetFromOptions(), 3488 MatXXXXSetPreallocation() paradgm instead of this routine directly. 3489 [MatXXXXSetPreallocation() is, for example, MatSeqAIJSetPreallocation] 3490 3491 Options Database Keys: 3492 . -mat_no_unroll - uses code that does not unroll the loops in the 3493 block calculations (much slower) 3494 . -mat_block_size - size of the blocks to use 3495 3496 Level: intermediate 3497 3498 Notes: 3499 The number of rows and columns must be divisible by blocksize. 3500 3501 If the nnz parameter is given then the nz parameter is ignored 3502 3503 A nonzero block is any block that as 1 or more nonzeros in it 3504 3505 The block AIJ format is fully compatible with standard Fortran 77 3506 storage. That is, the stored row and column indices can begin at 3507 either one (as in Fortran) or zero. See the users' manual for details. 3508 3509 Specify the preallocated storage with either nz or nnz (not both). 3510 Set nz=PETSC_DEFAULT and nnz=NULL for PETSc to control dynamic memory 3511 allocation. See the <A href="../../docs/manual.pdf#nameddest=ch_mat">Mat chapter of the users manual</A> for details. 3512 matrices. 3513 3514 .seealso: MatCreate(), MatCreateSeqAIJ(), MatSetValues(), MatCreateBAIJ() 3515 @*/ 3516 PetscErrorCode MatCreateSeqBAIJ(MPI_Comm comm,PetscInt bs,PetscInt m,PetscInt n,PetscInt nz,const PetscInt nnz[],Mat *A) 3517 { 3518 PetscErrorCode ierr; 3519 3520 PetscFunctionBegin; 3521 ierr = MatCreate(comm,A);CHKERRQ(ierr); 3522 ierr = MatSetSizes(*A,m,n,m,n);CHKERRQ(ierr); 3523 ierr = MatSetType(*A,MATSEQBAIJ);CHKERRQ(ierr); 3524 ierr = MatSeqBAIJSetPreallocation_SeqBAIJ(*A,bs,nz,(PetscInt*)nnz);CHKERRQ(ierr); 3525 PetscFunctionReturn(0); 3526 } 3527 3528 #undef __FUNCT__ 3529 #define __FUNCT__ "MatSeqBAIJSetPreallocation" 3530 /*@C 3531 MatSeqBAIJSetPreallocation - Sets the block size and expected nonzeros 3532 per row in the matrix. For good matrix assembly performance the 3533 user should preallocate the matrix storage by setting the parameter nz 3534 (or the array nnz). By setting these parameters accurately, performance 3535 during matrix assembly can be increased by more than a factor of 50. 3536 3537 Collective on MPI_Comm 3538 3539 Input Parameters: 3540 + A - the matrix 3541 . bs - size of block 3542 . nz - number of block nonzeros per block row (same for all rows) 3543 - nnz - array containing the number of block nonzeros in the various block rows 3544 (possibly different for each block row) or NULL 3545 3546 Options Database Keys: 3547 . -mat_no_unroll - uses code that does not unroll the loops in the 3548 block calculations (much slower) 3549 . -mat_block_size - size of the blocks to use 3550 3551 Level: intermediate 3552 3553 Notes: 3554 If the nnz parameter is given then the nz parameter is ignored 3555 3556 You can call MatGetInfo() to get information on how effective the preallocation was; 3557 for example the fields mallocs,nz_allocated,nz_used,nz_unneeded; 3558 You can also run with the option -info and look for messages with the string 3559 malloc in them to see if additional memory allocation was needed. 3560 3561 The block AIJ format is fully compatible with standard Fortran 77 3562 storage. That is, the stored row and column indices can begin at 3563 either one (as in Fortran) or zero. See the users' manual for details. 3564 3565 Specify the preallocated storage with either nz or nnz (not both). 3566 Set nz=PETSC_DEFAULT and nnz=NULL for PETSc to control dynamic memory 3567 allocation. See the <A href="../../docs/manual.pdf#nameddest=ch_mat">Mat chapter of the users manual</A> for details. 3568 3569 .seealso: MatCreate(), MatCreateSeqAIJ(), MatSetValues(), MatCreateBAIJ(), MatGetInfo() 3570 @*/ 3571 PetscErrorCode MatSeqBAIJSetPreallocation(Mat B,PetscInt bs,PetscInt nz,const PetscInt nnz[]) 3572 { 3573 PetscErrorCode ierr; 3574 3575 PetscFunctionBegin; 3576 PetscValidHeaderSpecific(B,MAT_CLASSID,1); 3577 PetscValidType(B,1); 3578 PetscValidLogicalCollectiveInt(B,bs,2); 3579 ierr = PetscTryMethod(B,"MatSeqBAIJSetPreallocation_C",(Mat,PetscInt,PetscInt,const PetscInt[]),(B,bs,nz,nnz));CHKERRQ(ierr); 3580 PetscFunctionReturn(0); 3581 } 3582 3583 #undef __FUNCT__ 3584 #define __FUNCT__ "MatSeqBAIJSetPreallocationCSR" 3585 /*@C 3586 MatSeqBAIJSetPreallocationCSR - Allocates memory for a sparse sequential matrix in AIJ format 3587 (the default sequential PETSc format). 3588 3589 Collective on MPI_Comm 3590 3591 Input Parameters: 3592 + A - the matrix 3593 . i - the indices into j for the start of each local row (starts with zero) 3594 . j - the column indices for each local row (starts with zero) these must be sorted for each row 3595 - v - optional values in the matrix 3596 3597 Level: developer 3598 3599 .keywords: matrix, aij, compressed row, sparse 3600 3601 .seealso: MatCreate(), MatCreateSeqBAIJ(), MatSetValues(), MatSeqBAIJSetPreallocation(), MATSEQBAIJ 3602 @*/ 3603 PetscErrorCode MatSeqBAIJSetPreallocationCSR(Mat B,PetscInt bs,const PetscInt i[],const PetscInt j[], const PetscScalar v[]) 3604 { 3605 PetscErrorCode ierr; 3606 3607 PetscFunctionBegin; 3608 PetscValidHeaderSpecific(B,MAT_CLASSID,1); 3609 PetscValidType(B,1); 3610 PetscValidLogicalCollectiveInt(B,bs,2); 3611 ierr = PetscTryMethod(B,"MatSeqBAIJSetPreallocationCSR_C",(Mat,PetscInt,const PetscInt[],const PetscInt[],const PetscScalar[]),(B,bs,i,j,v));CHKERRQ(ierr); 3612 PetscFunctionReturn(0); 3613 } 3614 3615 3616 #undef __FUNCT__ 3617 #define __FUNCT__ "MatCreateSeqBAIJWithArrays" 3618 /*@ 3619 MatCreateSeqBAIJWithArrays - Creates an sequential BAIJ matrix using matrix elements provided by the user. 3620 3621 Collective on MPI_Comm 3622 3623 Input Parameters: 3624 + comm - must be an MPI communicator of size 1 3625 . bs - size of block 3626 . m - number of rows 3627 . n - number of columns 3628 . i - row indices 3629 . j - column indices 3630 - a - matrix values 3631 3632 Output Parameter: 3633 . mat - the matrix 3634 3635 Level: advanced 3636 3637 Notes: 3638 The i, j, and a arrays are not copied by this routine, the user must free these arrays 3639 once the matrix is destroyed 3640 3641 You cannot set new nonzero locations into this matrix, that will generate an error. 3642 3643 The i and j indices are 0 based 3644 3645 When block size is greater than 1 the matrix values must be stored using the BAIJ storage format (see the BAIJ code to determine this). 3646 3647 3648 .seealso: MatCreate(), MatCreateBAIJ(), MatCreateSeqBAIJ() 3649 3650 @*/ 3651 PetscErrorCode MatCreateSeqBAIJWithArrays(MPI_Comm comm,PetscInt bs,PetscInt m,PetscInt n,PetscInt *i,PetscInt *j,PetscScalar *a,Mat *mat) 3652 { 3653 PetscErrorCode ierr; 3654 PetscInt ii; 3655 Mat_SeqBAIJ *baij; 3656 3657 PetscFunctionBegin; 3658 if (bs != 1) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"block size %D > 1 is not supported yet",bs); 3659 if (i[0]) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"i (row indices) must start with 0"); 3660 3661 ierr = MatCreate(comm,mat);CHKERRQ(ierr); 3662 ierr = MatSetSizes(*mat,m,n,m,n);CHKERRQ(ierr); 3663 ierr = MatSetType(*mat,MATSEQBAIJ);CHKERRQ(ierr); 3664 ierr = MatSeqBAIJSetPreallocation_SeqBAIJ(*mat,bs,MAT_SKIP_ALLOCATION,0);CHKERRQ(ierr); 3665 baij = (Mat_SeqBAIJ*)(*mat)->data; 3666 ierr = PetscMalloc2(m,PetscInt,&baij->imax,m,PetscInt,&baij->ilen);CHKERRQ(ierr); 3667 ierr = PetscLogObjectMemory((PetscObject)*mat,2*m*sizeof(PetscInt));CHKERRQ(ierr); 3668 3669 baij->i = i; 3670 baij->j = j; 3671 baij->a = a; 3672 3673 baij->singlemalloc = PETSC_FALSE; 3674 baij->nonew = -1; /*this indicates that inserting a new value in the matrix that generates a new nonzero is an error*/ 3675 baij->free_a = PETSC_FALSE; 3676 baij->free_ij = PETSC_FALSE; 3677 3678 for (ii=0; ii<m; ii++) { 3679 baij->ilen[ii] = baij->imax[ii] = i[ii+1] - i[ii]; 3680 #if defined(PETSC_USE_DEBUG) 3681 if (i[ii+1] - i[ii] < 0) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative row length in i (row indices) row = %d length = %d",ii,i[ii+1] - i[ii]); 3682 #endif 3683 } 3684 #if defined(PETSC_USE_DEBUG) 3685 for (ii=0; ii<baij->i[m]; ii++) { 3686 if (j[ii] < 0) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative column index at location = %d index = %d",ii,j[ii]); 3687 if (j[ii] > n - 1) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Column index to large at location = %d index = %d",ii,j[ii]); 3688 } 3689 #endif 3690 3691 ierr = MatAssemblyBegin(*mat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 3692 ierr = MatAssemblyEnd(*mat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 3693 PetscFunctionReturn(0); 3694 } 3695