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 #undef __FUNCT__ 8 #define __FUNCT__ "MatConvert_MPIAIJ_MPISBAIJ" 9 PETSC_EXTERN PetscErrorCode MatConvert_MPIAIJ_MPISBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 10 { 11 PetscErrorCode ierr; 12 Mat M; 13 Mat_MPIAIJ *mpimat = (Mat_MPIAIJ*)A->data; 14 Mat_SeqAIJ *Aa = (Mat_SeqAIJ*)mpimat->A->data,*Ba = (Mat_SeqAIJ*)mpimat->B->data; 15 PetscInt *d_nnz,*o_nnz; 16 PetscInt i,j,nz; 17 PetscInt m,n,lm,ln; 18 PetscInt rstart,rend; 19 const PetscScalar *vwork; 20 const PetscInt *cwork; 21 22 PetscFunctionBegin; 23 if (!A->symmetric) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_USER,"Matrix must be symmetric. Call MatSetOption(mat,MAT_SYMMETRIC,PETSC_TRUE)"); 24 ierr = MatGetSize(A,&m,&n);CHKERRQ(ierr); 25 ierr = MatGetLocalSize(A,&lm,&ln);CHKERRQ(ierr); 26 ierr = PetscMalloc2(lm,&d_nnz,lm,&o_nnz);CHKERRQ(ierr); 27 28 ierr = MatMarkDiagonal_SeqAIJ(mpimat->A);CHKERRQ(ierr); 29 for (i=0; i<lm; i++) { 30 d_nnz[i] = Aa->i[i+1] - Aa->diag[i]; 31 o_nnz[i] = Ba->i[i+1] - Ba->i[i]; 32 } 33 34 ierr = MatCreate(PetscObjectComm((PetscObject)A),&M);CHKERRQ(ierr); 35 ierr = MatSetSizes(M,lm,ln,m,n);CHKERRQ(ierr); 36 ierr = MatSetType(M,MATMPISBAIJ);CHKERRQ(ierr); 37 ierr = MatSeqSBAIJSetPreallocation(M,1,0,d_nnz);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) { 47 j++; nz--; 48 } 49 ierr = MatSetValues(M,1,&i,nz,cwork+j,vwork+j,INSERT_VALUES);CHKERRQ(ierr); 50 ierr = MatRestoreRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 51 } 52 ierr = MatAssemblyBegin(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 53 ierr = MatAssemblyEnd(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 54 55 if (reuse == MAT_REUSE_MATRIX) { 56 ierr = MatHeaderReplace(A,M);CHKERRQ(ierr); 57 } else { 58 *newmat = M; 59 } 60 PetscFunctionReturn(0); 61 } 62 /* contributed by Dahai Guo <dhguo@ncsa.uiuc.edu> April 2011 */ 63 #undef __FUNCT__ 64 #define __FUNCT__ "MatConvert_MPIBAIJ_MPISBAIJ" 65 PETSC_EXTERN PetscErrorCode MatConvert_MPIBAIJ_MPISBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 66 { 67 PetscErrorCode ierr; 68 Mat M; 69 Mat_MPIBAIJ *mpimat = (Mat_MPIBAIJ*)A->data; 70 Mat_SeqBAIJ *Aa = (Mat_SeqBAIJ*)mpimat->A->data,*Ba = (Mat_SeqBAIJ*)mpimat->B->data; 71 PetscInt *d_nnz,*o_nnz; 72 PetscInt i,j,nz; 73 PetscInt m,n,lm,ln; 74 PetscInt rstart,rend; 75 const PetscScalar *vwork; 76 const PetscInt *cwork; 77 PetscInt bs = A->rmap->bs; 78 79 PetscFunctionBegin; 80 ierr = MatGetSize(A,&m,&n);CHKERRQ(ierr); 81 ierr = MatGetLocalSize(A,&lm,&ln);CHKERRQ(ierr); 82 ierr = PetscMalloc2(lm/bs,&d_nnz,lm/bs,&o_nnz);CHKERRQ(ierr); 83 84 ierr = MatMarkDiagonal_SeqBAIJ(mpimat->A);CHKERRQ(ierr); 85 for (i=0; i<lm/bs; i++) { 86 d_nnz[i] = Aa->i[i+1] - Aa->diag[i]; 87 o_nnz[i] = Ba->i[i+1] - Ba->i[i]; 88 } 89 90 ierr = MatCreate(PetscObjectComm((PetscObject)A),&M);CHKERRQ(ierr); 91 ierr = MatSetSizes(M,lm,ln,m,n);CHKERRQ(ierr); 92 ierr = MatSetType(M,MATMPISBAIJ);CHKERRQ(ierr); 93 ierr = MatSeqSBAIJSetPreallocation(M,bs,0,d_nnz);CHKERRQ(ierr); 94 ierr = MatMPISBAIJSetPreallocation(M,bs,0,d_nnz,0,o_nnz);CHKERRQ(ierr); 95 96 ierr = PetscFree2(d_nnz,o_nnz);CHKERRQ(ierr); 97 98 ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 99 ierr = MatSetOption(M,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE);CHKERRQ(ierr); 100 for (i=rstart; i<rend; i++) { 101 ierr = MatGetRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 102 j = 0; 103 ierr = MatSetValues(M,1,&i,nz,cwork+j,vwork+j,INSERT_VALUES);CHKERRQ(ierr); 104 ierr = MatRestoreRow(A,i,&nz,&cwork,&vwork);CHKERRQ(ierr); 105 } 106 ierr = MatAssemblyBegin(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 107 ierr = MatAssemblyEnd(M,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 108 109 if (reuse == MAT_REUSE_MATRIX) { 110 ierr = MatHeaderReplace(A,M);CHKERRQ(ierr); 111 } else { 112 *newmat = M; 113 } 114 PetscFunctionReturn(0); 115 } 116