1 2 #include <../src/mat/impls/sbaij/mpi/mpisbaij.h> /*I "petscmat.h" I*/ 3 #include <../src/mat/impls/aij/mpi/mpiaij.h> 4 #include <private/matimpl.h> 5 #include <petscmat.h> 6 7 EXTERN_C_BEGIN 8 #undef __FUNCT__ 9 #define __FUNCT__ "MatConvert_MPIAIJ_MPISBAIJ" 10 PetscErrorCode MatConvert_MPIAIJ_MPISBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 11 { 12 PetscErrorCode ierr; 13 Mat M; 14 Mat_MPIAIJ *mpimat = (Mat_MPIAIJ*)A->data; 15 Mat_SeqAIJ *Aa = (Mat_SeqAIJ*)mpimat->A->data,*Ba = (Mat_SeqAIJ*)mpimat->B->data; 16 PetscInt *d_nnz,*o_nnz; 17 PetscInt i,j,nz; 18 PetscInt m,n,lm,ln; 19 PetscInt rstart,rend; 20 const PetscScalar *vwork; 21 const PetscInt *cwork; 22 23 PetscFunctionBegin; 24 if (!A->symmetric) SETERRQ(((PetscObject)A)->comm,PETSC_ERR_USER,"Matrix must be symmetric. Call MatSetOption(mat,MAT_SYMMETRIC,PETSC_TRUE)"); 25 ierr = MatGetSize(A,&m,&n);CHKERRQ(ierr); 26 ierr = MatGetLocalSize(A,&lm,&ln);CHKERRQ(ierr); 27 ierr = PetscMalloc2(lm,PetscInt,&d_nnz,lm,PetscInt,&o_nnz);CHKERRQ(ierr); 28 29 ierr = MatMarkDiagonal_SeqAIJ(mpimat->A);CHKERRQ(ierr); 30 for(i=0;i<lm;i++){ 31 d_nnz[i] = Aa->i[i+1] - Aa->diag[i]; 32 o_nnz[i] = Ba->i[i+1] - Ba->i[i]; 33 } 34 35 ierr = MatCreate(((PetscObject)A)->comm,&M);CHKERRQ(ierr); 36 ierr = MatSetSizes(M,lm,ln,m,n);CHKERRQ(ierr); 37 ierr = MatSetType(M,newtype);CHKERRQ(ierr); 38 ierr = MatMPISBAIJSetPreallocation(M,1,0,d_nnz,0,o_nnz);CHKERRQ(ierr); 39 40 ierr = PetscFree2(d_nnz,o_nnz);CHKERRQ(ierr); 41 42 ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 43 for(i=rstart;i<rend;i++){ 44 ierr = MatGetRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 45 j = 0; 46 while (cwork[j] < i){ j++; nz--;} 47 ierr = MatSetValues(M,1,&i,nz,cwork+j,vwork+j,INSERT_VALUES);CHKERRQ(ierr); 48 ierr = MatRestoreRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 49 } 50 ierr = MatAssemblyBegin(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 51 ierr = MatAssemblyEnd(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 52 53 if (reuse == MAT_REUSE_MATRIX) { 54 ierr = MatHeaderReplace(A,M);CHKERRQ(ierr); 55 } else { 56 *newmat = M; 57 } 58 PetscFunctionReturn(0); 59 } 60 /* contributed by Dahai Guo <dhguo@ncsa.uiuc.edu> April 2011 */ 61 #undef __FUNCT__ 62 #define __FUNCT__ "MatConvert_MPIBAIJ_MPISBAIJ" 63 PetscErrorCode MatConvert_MPIBAIJ_MPISBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 64 { 65 PetscErrorCode ierr; 66 Mat M; 67 Mat_MPIBAIJ *mpimat = (Mat_MPIBAIJ*)A->data; 68 Mat_SeqBAIJ *Aa = (Mat_SeqBAIJ*)mpimat->A->data,*Ba = (Mat_SeqBAIJ*)mpimat->B->data; 69 PetscInt *d_nnz,*o_nnz; 70 PetscInt i,j,nz; 71 PetscInt m,n,lm,ln; 72 PetscInt rstart,rend; 73 const PetscScalar *vwork; 74 const PetscInt *cwork; 75 PetscInt bs = A->rmap->bs; 76 77 PetscFunctionBegin; 78 ierr = MatGetSize(A,&m,&n);CHKERRQ(ierr); 79 ierr = MatGetLocalSize(A,&lm,&ln);CHKERRQ(ierr); 80 ierr = PetscMalloc2(lm/bs,PetscInt,&d_nnz,lm/bs,PetscInt,&o_nnz);CHKERRQ(ierr); 81 82 ierr = MatMarkDiagonal_SeqBAIJ(mpimat->A);CHKERRQ(ierr); 83 for(i=0;i<lm/bs;i++){ 84 d_nnz[i] = Aa->i[i+1] - Aa->diag[i]; 85 o_nnz[i] = Ba->i[i+1] - Ba->i[i]; 86 } 87 88 ierr = MatCreate(((PetscObject)A)->comm,&M);CHKERRQ(ierr); 89 ierr = MatSetSizes(M,lm,ln,m,n);CHKERRQ(ierr); 90 ierr = MatSetType(M,newtype);CHKERRQ(ierr); 91 ierr = MatMPISBAIJSetPreallocation(M,bs,0,d_nnz,0,o_nnz);CHKERRQ(ierr); 92 93 ierr = PetscFree2(d_nnz,o_nnz);CHKERRQ(ierr); 94 95 ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 96 ierr = MatSetOption(M,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE);CHKERRQ(ierr); 97 for(i=rstart;i<rend;i++){ 98 ierr = MatGetRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 99 j = 0; 100 ierr = MatSetValues(M,1,&i,nz,cwork+j,vwork+j,INSERT_VALUES);CHKERRQ(ierr); 101 ierr = MatRestoreRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 102 } 103 ierr = MatAssemblyBegin(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 104 ierr = MatAssemblyEnd(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 105 106 if (reuse == MAT_REUSE_MATRIX) { 107 ierr = MatHeaderReplace(A,M);CHKERRQ(ierr); 108 } else { 109 *newmat = M; 110 } 111 PetscFunctionReturn(0); 112 } 113 EXTERN_C_END 114