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 <petsc/private/matimpl.h> 5 #include <petscmat.h> 6 7 PETSC_INTERN PetscErrorCode MatConvert_MPIAIJ_MPISBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 8 { 9 PetscErrorCode ierr; 10 Mat M; 11 Mat_MPIAIJ *mpimat = (Mat_MPIAIJ*)A->data; 12 Mat_SeqAIJ *Aa = (Mat_SeqAIJ*)mpimat->A->data,*Ba = (Mat_SeqAIJ*)mpimat->B->data; 13 PetscInt *d_nnz,*o_nnz; 14 PetscInt i,j,nz; 15 PetscInt m,n,lm,ln; 16 PetscInt rstart,rend; 17 const PetscScalar *vwork; 18 const PetscInt *cwork; 19 20 PetscFunctionBegin; 21 if (!A->symmetric) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_USER,"Matrix must be symmetric. Call MatSetOption(mat,MAT_SYMMETRIC,PETSC_TRUE)"); 22 if (reuse != MAT_REUSE_MATRIX) { 23 ierr = MatGetSize(A,&m,&n);CHKERRQ(ierr); 24 ierr = MatGetLocalSize(A,&lm,&ln);CHKERRQ(ierr); 25 ierr = PetscMalloc2(lm,&d_nnz,lm,&o_nnz);CHKERRQ(ierr); 26 27 ierr = MatMarkDiagonal_SeqAIJ(mpimat->A);CHKERRQ(ierr); 28 for (i=0; i<lm; i++) { 29 d_nnz[i] = Aa->i[i+1] - Aa->diag[i]; 30 o_nnz[i] = Ba->i[i+1] - Ba->i[i]; 31 } 32 33 ierr = MatCreate(PetscObjectComm((PetscObject)A),&M);CHKERRQ(ierr); 34 ierr = MatSetSizes(M,lm,ln,m,n);CHKERRQ(ierr); 35 ierr = MatSetType(M,MATMPISBAIJ);CHKERRQ(ierr); 36 ierr = MatSeqSBAIJSetPreallocation(M,1,0,d_nnz);CHKERRQ(ierr); 37 ierr = MatMPISBAIJSetPreallocation(M,1,0,d_nnz,0,o_nnz);CHKERRQ(ierr); 38 ierr = PetscFree2(d_nnz,o_nnz);CHKERRQ(ierr); 39 } else M = *newmat; 40 41 ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 42 for (i=rstart; i<rend; i++) { 43 ierr = MatGetRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 44 j = 0; 45 while (cwork[j] < i) { 46 j++; nz--; 47 } 48 ierr = MatSetValues(M,1,&i,nz,cwork+j,vwork+j,INSERT_VALUES);CHKERRQ(ierr); 49 ierr = MatRestoreRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 50 } 51 ierr = MatAssemblyBegin(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 52 ierr = MatAssemblyEnd(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 53 54 if (reuse == MAT_INPLACE_MATRIX) { 55 ierr = MatHeaderReplace(A,&M);CHKERRQ(ierr); 56 } else { 57 *newmat = M; 58 } 59 PetscFunctionReturn(0); 60 } 61 /* contributed by Dahai Guo <dhguo@ncsa.uiuc.edu> April 2011 */ 62 PETSC_INTERN PetscErrorCode MatConvert_MPIBAIJ_MPISBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 63 { 64 PetscErrorCode ierr; 65 Mat M; 66 Mat_MPIBAIJ *mpimat = (Mat_MPIBAIJ*)A->data; 67 Mat_SeqBAIJ *Aa = (Mat_SeqBAIJ*)mpimat->A->data,*Ba = (Mat_SeqBAIJ*)mpimat->B->data; 68 PetscInt *d_nnz,*o_nnz; 69 PetscInt i,j,nz; 70 PetscInt m,n,lm,ln; 71 PetscInt rstart,rend; 72 const PetscScalar *vwork; 73 const PetscInt *cwork; 74 PetscInt bs = A->rmap->bs; 75 76 PetscFunctionBegin; 77 if (reuse != MAT_REUSE_MATRIX) { 78 ierr = MatGetSize(A,&m,&n);CHKERRQ(ierr); 79 ierr = MatGetLocalSize(A,&lm,&ln);CHKERRQ(ierr); 80 ierr = PetscMalloc2(lm/bs,&d_nnz,lm/bs,&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(PetscObjectComm((PetscObject)A),&M);CHKERRQ(ierr); 89 ierr = MatSetSizes(M,lm,ln,m,n);CHKERRQ(ierr); 90 ierr = MatSetType(M,MATMPISBAIJ);CHKERRQ(ierr); 91 ierr = MatSeqSBAIJSetPreallocation(M,bs,0,d_nnz);CHKERRQ(ierr); 92 ierr = MatMPISBAIJSetPreallocation(M,bs,0,d_nnz,0,o_nnz);CHKERRQ(ierr); 93 94 ierr = PetscFree2(d_nnz,o_nnz);CHKERRQ(ierr); 95 } else M = *newmat; 96 97 ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 98 ierr = MatSetOption(M,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE);CHKERRQ(ierr); 99 for (i=rstart; i<rend; i++) { 100 ierr = MatGetRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 101 j = 0; 102 ierr = MatSetValues(M,1,&i,nz,cwork+j,vwork+j,INSERT_VALUES);CHKERRQ(ierr); 103 ierr = MatRestoreRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 104 } 105 ierr = MatAssemblyBegin(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 106 ierr = MatAssemblyEnd(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 107 108 if (reuse == MAT_INPLACE_MATRIX) { 109 ierr = MatHeaderReplace(A,&M);CHKERRQ(ierr); 110 } else { 111 *newmat = M; 112 } 113 PetscFunctionReturn(0); 114 } 115