1 #include <../src/mat/impls/sbaij/mpi/mpisbaij.h> /*I "petscmat.h" I*/ 2 #include <../src/mat/impls/aij/mpi/mpiaij.h> 3 #include <petsc/private/matimpl.h> 4 #include <petscmat.h> 5 6 PETSC_INTERN PetscErrorCode MatConvert_SeqAIJ_SeqBAIJ_Preallocate(Mat, PetscInt **); 7 PETSC_INTERN PetscErrorCode MatConvert_SeqAIJ_SeqSBAIJ_Preallocate(Mat, PetscInt **); 8 9 /* The code is virtually identical to MatConvert_MPIAIJ_MPIBAIJ() */ 10 PETSC_INTERN PetscErrorCode MatConvert_MPIAIJ_MPISBAIJ(Mat A, MatType newtype, MatReuse reuse, Mat *newmat) 11 { 12 Mat M; 13 Mat_MPIAIJ *mpimat = (Mat_MPIAIJ *)A->data; 14 PetscInt *d_nnz, *o_nnz; 15 PetscInt m, n, lm, ln, bs = A->rmap->bs; 16 17 PetscFunctionBegin; 18 if (reuse != MAT_REUSE_MATRIX) { 19 const PetscBool3 symmetric = A->symmetric, hermitian = A->hermitian, spd = A->spd; 20 21 PetscCall(MatDisAssemble_MPIAIJ(A, PETSC_FALSE)); 22 PetscCall(MatGetSize(A, &m, &n)); 23 PetscCall(MatGetLocalSize(A, &lm, &ln)); 24 PetscCall(MatConvert_SeqAIJ_SeqSBAIJ_Preallocate(mpimat->A, &d_nnz)); 25 PetscCall(MatConvert_SeqAIJ_SeqBAIJ_Preallocate(mpimat->B, &o_nnz)); 26 PetscCall(MatCreate(PetscObjectComm((PetscObject)A), &M)); 27 PetscCall(MatSetSizes(M, lm, ln, m, n)); 28 PetscCall(MatSetType(M, MATMPISBAIJ)); 29 PetscCall(MatSeqSBAIJSetPreallocation(M, bs, 0, d_nnz)); 30 PetscCall(MatMPISBAIJSetPreallocation(M, bs, 0, d_nnz, 0, o_nnz)); 31 PetscCall(PetscFree(d_nnz)); 32 PetscCall(PetscFree(o_nnz)); 33 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 34 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 35 if (symmetric != PETSC_BOOL3_UNKNOWN) PetscCall(MatSetOption(A, MAT_SYMMETRIC, PetscBool3ToBool(symmetric))); 36 if (hermitian != PETSC_BOOL3_UNKNOWN) PetscCall(MatSetOption(A, MAT_HERMITIAN, PetscBool3ToBool(hermitian))); 37 if (spd != PETSC_BOOL3_UNKNOWN) PetscCall(MatSetOption(A, MAT_SPD, PetscBool3ToBool(spd))); 38 } else M = *newmat; 39 40 /* reuse may not be equal to MAT_REUSE_MATRIX, but the basic converter will reallocate or replace newmat if this value is not used */ 41 /* if reuse is equal to MAT_INITIAL_MATRIX, it has been appropriately preallocated before */ 42 /* MAT_INPLACE_MATRIX, it will be replaced with MatHeaderReplace below */ 43 PetscCall(MatConvert_Basic(A, newtype, MAT_REUSE_MATRIX, &M)); 44 45 if (reuse == MAT_INPLACE_MATRIX) PetscCall(MatHeaderReplace(A, &M)); 46 else *newmat = M; 47 PetscFunctionReturn(PETSC_SUCCESS); 48 } 49 50 /* contributed by Dahai Guo <dhguo@ncsa.uiuc.edu> April 2011 */ 51 PETSC_INTERN PetscErrorCode MatConvert_MPIBAIJ_MPISBAIJ(Mat A, MatType newtype, MatReuse reuse, Mat *newmat) 52 { 53 Mat M; 54 Mat_MPIBAIJ *mpimat = (Mat_MPIBAIJ *)A->data; 55 Mat_SeqBAIJ *Aa = (Mat_SeqBAIJ *)mpimat->A->data, *Ba = (Mat_SeqBAIJ *)mpimat->B->data; 56 PetscInt *d_nnz, *o_nnz; 57 PetscInt i, nz; 58 PetscInt m, n, lm, ln; 59 PetscInt rstart, rend; 60 const PetscScalar *vwork; 61 const PetscInt *cwork; 62 PetscInt bs = A->rmap->bs; 63 const PetscInt *adiag; 64 65 PetscFunctionBegin; 66 if (reuse != MAT_REUSE_MATRIX) { 67 PetscCall(MatGetSize(A, &m, &n)); 68 PetscCall(MatGetLocalSize(A, &lm, &ln)); 69 PetscCall(PetscMalloc2(lm / bs, &d_nnz, lm / bs, &o_nnz)); 70 71 PetscCall(MatGetDiagonalMarkers_SeqBAIJ(mpimat->A, &adiag, NULL)); 72 for (i = 0; i < lm / bs; i++) { 73 d_nnz[i] = Aa->i[i + 1] - adiag[i]; 74 o_nnz[i] = Ba->i[i + 1] - Ba->i[i]; 75 } 76 77 PetscCall(MatCreate(PetscObjectComm((PetscObject)A), &M)); 78 PetscCall(MatSetSizes(M, lm, ln, m, n)); 79 PetscCall(MatSetType(M, MATMPISBAIJ)); 80 PetscCall(MatSeqSBAIJSetPreallocation(M, bs, 0, d_nnz)); 81 PetscCall(MatMPISBAIJSetPreallocation(M, bs, 0, d_nnz, 0, o_nnz)); 82 83 PetscCall(PetscFree2(d_nnz, o_nnz)); 84 } else M = *newmat; 85 86 PetscCall(MatGetOwnershipRange(A, &rstart, &rend)); 87 PetscCall(MatSetOption(M, MAT_IGNORE_LOWER_TRIANGULAR, PETSC_TRUE)); 88 for (i = rstart; i < rend; i++) { 89 PetscCall(MatGetRow(A, i, &nz, &cwork, &vwork)); 90 PetscCall(MatSetValues(M, 1, &i, nz, cwork, vwork, INSERT_VALUES)); 91 PetscCall(MatRestoreRow(A, i, &nz, &cwork, &vwork)); 92 } 93 PetscCall(MatAssemblyBegin(M, MAT_FINAL_ASSEMBLY)); 94 PetscCall(MatAssemblyEnd(M, MAT_FINAL_ASSEMBLY)); 95 96 if (reuse == MAT_INPLACE_MATRIX) PetscCall(MatHeaderReplace(A, &M)); 97 else *newmat = M; 98 PetscFunctionReturn(PETSC_SUCCESS); 99 } 100