1 static char help[] = "Tests MatPermute() in parallel.\n\n"; 2 /* Results: 3 Sequential: 4 - seqaij: correct permutation 5 - seqbaij: permutation not supported for this MATTYPE 6 - seqsbaij: permutation not supported for this MATTYPE 7 Parallel: 8 - mpiaij: correct permutation 9 - mpibaij: correct permutation 10 - mpisbaij: permutation not supported for this MATTYPE 11 */ 12 13 #include <petscmat.h> 14 15 int main(int argc, char **argv) 16 { 17 const struct { 18 PetscInt i, j; 19 PetscScalar v; 20 } entries[] = { 21 {0, 3, 1.}, 22 {1, 2, 2.}, 23 {2, 1, 3.}, 24 {2, 5, 4.}, 25 {3, 0, 5.}, 26 {3, 6, 6.}, 27 {4, 1, 7.}, 28 {4, 4, 8.} 29 }; 30 const PetscInt ixrow[5] = {4, 2, 1, 0, 3}, ixcol[7] = {5, 3, 6, 1, 2, 0, 4}; 31 Mat A, B; 32 PetscInt i, rstart, rend, cstart, cend; 33 IS isrow, iscol; 34 PetscViewer viewer; 35 PetscBool view_sparse; 36 37 PetscFunctionBeginUser; 38 PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 39 /* ------- Assemble matrix, --------- */ 40 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 41 PetscCall(MatSetSizes(A, PETSC_DECIDE, PETSC_DECIDE, 5, 7)); 42 PetscCall(MatSetFromOptions(A)); 43 PetscCall(MatSetUp(A)); 44 PetscCall(MatGetOwnershipRange(A, &rstart, &rend)); 45 PetscCall(MatGetOwnershipRangeColumn(A, &cstart, &cend)); 46 47 for (i = 0; i < (PetscInt)PETSC_STATIC_ARRAY_LENGTH(entries); i++) PetscCall(MatSetValue(A, entries[i].i, entries[i].j, entries[i].v, INSERT_VALUES)); 48 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 49 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 50 51 /* ------ Prepare index sets ------ */ 52 PetscCall(ISCreateGeneral(PETSC_COMM_WORLD, rend - rstart, ixrow + rstart, PETSC_USE_POINTER, &isrow)); 53 PetscCall(ISCreateGeneral(PETSC_COMM_WORLD, cend - cstart, ixcol + cstart, PETSC_USE_POINTER, &iscol)); 54 PetscCall(ISSetPermutation(isrow)); 55 PetscCall(ISSetPermutation(iscol)); 56 57 PetscCall(PetscViewerASCIIGetStdout(PETSC_COMM_WORLD, &viewer)); 58 view_sparse = PETSC_FALSE; 59 PetscCall(PetscOptionsGetBool(NULL, NULL, "-view_sparse", &view_sparse, NULL)); 60 if (!view_sparse) PetscCall(PetscViewerPushFormat(viewer, PETSC_VIEWER_ASCII_DENSE)); 61 PetscCall(PetscViewerASCIIPrintf(viewer, "Original matrix\n")); 62 PetscCall(MatView(A, viewer)); 63 64 PetscCall(MatPermute(A, isrow, iscol, &B)); 65 PetscCall(PetscViewerASCIIPrintf(viewer, "Permuted matrix\n")); 66 PetscCall(MatView(B, viewer)); 67 68 if (!view_sparse) PetscCall(PetscViewerPopFormat(viewer)); 69 PetscCall(PetscViewerASCIIPrintf(viewer, "Row permutation\n")); 70 PetscCall(ISView(isrow, viewer)); 71 PetscCall(PetscViewerASCIIPrintf(viewer, "Column permutation\n")); 72 PetscCall(ISView(iscol, viewer)); 73 74 /* Free data structures */ 75 PetscCall(ISDestroy(&isrow)); 76 PetscCall(ISDestroy(&iscol)); 77 PetscCall(MatDestroy(&A)); 78 PetscCall(MatDestroy(&B)); 79 80 PetscCall(PetscFinalize()); 81 return 0; 82 } 83 84 /*TEST 85 86 build: 87 requires: !complex 88 89 test: 90 args: -view_sparse 91 92 test: 93 suffix: 2 94 nsize: 2 95 args: -view_sparse 96 97 test: 98 suffix: 2b 99 nsize: 2 100 args: -mat_type baij -view_sparse 101 102 test: 103 suffix: 3 104 nsize: 3 105 args: -view_sparse 106 107 test: 108 suffix: 3b 109 nsize: 3 110 args: -mat_type baij -view_sparse 111 112 test: 113 suffix: dense 114 args: -mat_type dense 115 116 TEST*/ 117