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 {PetscInt i,j; PetscScalar v;} entries[] = {{0,3,1.},{1,2,2.},{2,1,3.},{2,5,4.},{3,0,5.},{3,6,6.},{4,1,7.},{4,4,8.}}; 18 const PetscInt ixrow[5] = {4,2,1,0,3},ixcol[7] = {5,3,6,1,2,0,4}; 19 Mat A,B; 20 PetscErrorCode ierr; 21 PetscInt i,rstart,rend,cstart,cend; 22 IS isrow,iscol; 23 PetscViewer viewer; 24 PetscBool view_sparse; 25 26 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 27 /* ------- Assemble matrix, --------- */ 28 ierr = MatCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr); 29 ierr = MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,5,7);CHKERRQ(ierr); 30 ierr = MatSetFromOptions(A);CHKERRQ(ierr); 31 ierr = MatSetUp(A);CHKERRQ(ierr); 32 ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 33 ierr = MatGetOwnershipRangeColumn(A,&cstart,&cend);CHKERRQ(ierr); 34 35 for (i=0; i<(PetscInt)(sizeof(entries)/sizeof(entries[0])); i++) { 36 ierr = MatSetValue(A,entries[i].i,entries[i].j,entries[i].v,INSERT_VALUES);CHKERRQ(ierr); 37 } 38 ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 39 ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 40 41 /* ------ Prepare index sets ------ */ 42 ierr = ISCreateGeneral(PETSC_COMM_WORLD,rend-rstart,ixrow+rstart,PETSC_USE_POINTER,&isrow);CHKERRQ(ierr); 43 ierr = ISCreateGeneral(PETSC_COMM_WORLD,cend-cstart,ixcol+cstart,PETSC_USE_POINTER,&iscol);CHKERRQ(ierr); 44 ierr = ISSetPermutation(isrow);CHKERRQ(ierr); 45 ierr = ISSetPermutation(iscol);CHKERRQ(ierr); 46 47 ierr = PetscViewerASCIIGetStdout(PETSC_COMM_WORLD,&viewer);CHKERRQ(ierr); 48 view_sparse = PETSC_FALSE; 49 ierr = PetscOptionsGetBool(NULL,NULL, "-view_sparse", &view_sparse, NULL);CHKERRQ(ierr); 50 if (!view_sparse) { 51 ierr = PetscViewerPushFormat(viewer,PETSC_VIEWER_ASCII_DENSE);CHKERRQ(ierr); 52 } 53 ierr = PetscViewerASCIIPrintf(viewer,"Original matrix\n");CHKERRQ(ierr); 54 ierr = MatView(A,viewer);CHKERRQ(ierr); 55 56 ierr = MatPermute(A,isrow,iscol,&B);CHKERRQ(ierr); 57 ierr = PetscViewerASCIIPrintf(viewer,"Permuted matrix\n");CHKERRQ(ierr); 58 ierr = MatView(B,viewer);CHKERRQ(ierr); 59 60 if (!view_sparse) { 61 ierr = PetscViewerPopFormat(viewer);CHKERRQ(ierr); 62 } 63 ierr = PetscViewerASCIIPrintf(viewer,"Row permutation\n");CHKERRQ(ierr); 64 ierr = ISView(isrow,viewer);CHKERRQ(ierr); 65 ierr = PetscViewerASCIIPrintf(viewer,"Column permutation\n");CHKERRQ(ierr); 66 ierr = ISView(iscol,viewer);CHKERRQ(ierr); 67 68 /* Free data structures */ 69 ierr = ISDestroy(&isrow);CHKERRQ(ierr); 70 ierr = ISDestroy(&iscol);CHKERRQ(ierr); 71 ierr = MatDestroy(&A);CHKERRQ(ierr); 72 ierr = MatDestroy(&B);CHKERRQ(ierr); 73 74 ierr = PetscFinalize(); 75 return ierr; 76 } 77 78 /*TEST 79 80 build: 81 requires: !complex 82 83 test: 84 args: -view_sparse 85 86 test: 87 suffix: 2 88 nsize: 2 89 args: -view_sparse 90 91 test: 92 suffix: 2b 93 nsize: 2 94 args: -mat_type baij -view_sparse 95 96 test: 97 suffix: 3 98 nsize: 3 99 args: -view_sparse 100 101 test: 102 suffix: 3b 103 nsize: 3 104 args: -mat_type baij -view_sparse 105 106 test: 107 suffix: dense 108 args: -mat_type dense 109 110 TEST*/ 111