1 2 static char help[] = "Tests DMComposite routines.\n\n"; 3 4 #include <petscdmredundant.h> 5 #include <petscdm.h> 6 #include <petscdmda.h> 7 #include <petscdmcomposite.h> 8 #include <petscpf.h> 9 10 int main(int argc, char **argv) { 11 PetscInt nredundant1 = 5, nredundant2 = 2, i; 12 ISLocalToGlobalMapping *ltog; 13 PetscMPIInt rank, size; 14 DM packer; 15 Vec global, local1, local2, redundant1, redundant2; 16 PF pf; 17 DM da1, da2, dmred1, dmred2; 18 PetscScalar *redundant1a, *redundant2a; 19 PetscViewer sviewer; 20 PetscBool gather_add = PETSC_FALSE; 21 22 PetscFunctionBeginUser; 23 PetscCall(PetscInitialize(&argc, &argv, (char *)0, help)); 24 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 25 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 26 27 PetscCall(PetscOptionsGetBool(NULL, NULL, "-gather_add", &gather_add, NULL)); 28 29 PetscCall(DMCompositeCreate(PETSC_COMM_WORLD, &packer)); 30 31 PetscCall(DMRedundantCreate(PETSC_COMM_WORLD, 0, nredundant1, &dmred1)); 32 PetscCall(DMCreateLocalVector(dmred1, &redundant1)); 33 PetscCall(DMCompositeAddDM(packer, dmred1)); 34 35 PetscCall(DMDACreate1d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, 8, 1, 1, NULL, &da1)); 36 PetscCall(DMSetFromOptions(da1)); 37 PetscCall(DMSetUp(da1)); 38 PetscCall(DMCreateLocalVector(da1, &local1)); 39 PetscCall(DMCompositeAddDM(packer, da1)); 40 41 PetscCall(DMRedundantCreate(PETSC_COMM_WORLD, 1 % size, nredundant2, &dmred2)); 42 PetscCall(DMCreateLocalVector(dmred2, &redundant2)); 43 PetscCall(DMCompositeAddDM(packer, dmred2)); 44 45 PetscCall(DMDACreate1d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, 6, 1, 1, NULL, &da2)); 46 PetscCall(DMSetFromOptions(da2)); 47 PetscCall(DMSetUp(da2)); 48 PetscCall(DMCreateLocalVector(da2, &local2)); 49 PetscCall(DMCompositeAddDM(packer, da2)); 50 51 PetscCall(DMCreateGlobalVector(packer, &global)); 52 PetscCall(PFCreate(PETSC_COMM_WORLD, 1, 1, &pf)); 53 PetscCall(PFSetType(pf, PFIDENTITY, NULL)); 54 PetscCall(PFApplyVec(pf, NULL, global)); 55 PetscCall(PFDestroy(&pf)); 56 PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD)); 57 58 PetscCall(DMCompositeScatter(packer, global, redundant1, local1, redundant2, local2)); 59 PetscCall(PetscViewerASCIIPushSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 60 PetscCall(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD, "[%d] My part of redundant1 vector\n", rank)); 61 PetscCall(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 62 PetscCall(VecView(redundant1, sviewer)); 63 PetscCall(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 64 PetscCall(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 65 PetscCall(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD, "[%d] My part of da1 vector\n", rank)); 66 PetscCall(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 67 PetscCall(VecView(local1, sviewer)); 68 PetscCall(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 69 PetscCall(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 70 PetscCall(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD, "[%d] My part of redundant2 vector\n", rank)); 71 PetscCall(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 72 PetscCall(VecView(redundant2, sviewer)); 73 PetscCall(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 74 PetscCall(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 75 PetscCall(PetscViewerASCIISynchronizedPrintf(PETSC_VIEWER_STDOUT_WORLD, "[%d] My part of da2 vector\n", rank)); 76 PetscCall(PetscViewerGetSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 77 PetscCall(VecView(local2, sviewer)); 78 PetscCall(PetscViewerRestoreSubViewer(PETSC_VIEWER_STDOUT_WORLD, PETSC_COMM_SELF, &sviewer)); 79 PetscCall(PetscViewerFlush(PETSC_VIEWER_STDOUT_WORLD)); 80 PetscCall(PetscViewerASCIIPopSynchronized(PETSC_VIEWER_STDOUT_WORLD)); 81 82 PetscCall(VecGetArray(redundant1, &redundant1a)); 83 PetscCall(VecGetArray(redundant2, &redundant2a)); 84 for (i = 0; i < nredundant1; i++) redundant1a[i] = (rank + 2) * i; 85 for (i = 0; i < nredundant2; i++) redundant2a[i] = (rank + 10) * i; 86 PetscCall(VecRestoreArray(redundant1, &redundant1a)); 87 PetscCall(VecRestoreArray(redundant2, &redundant2a)); 88 89 PetscCall(DMCompositeGather(packer, gather_add ? ADD_VALUES : INSERT_VALUES, global, redundant1, local1, redundant2, local2)); 90 PetscCall(VecView(global, PETSC_VIEWER_STDOUT_WORLD)); 91 92 /* get the global numbering for each subvector element */ 93 PetscCall(DMCompositeGetISLocalToGlobalMappings(packer, <og)); 94 95 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "Local to global mapping of redundant1 vector\n")); 96 PetscCall(ISLocalToGlobalMappingView(ltog[0], PETSC_VIEWER_STDOUT_WORLD)); 97 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "Local to global mapping of local1 vector\n")); 98 PetscCall(ISLocalToGlobalMappingView(ltog[1], PETSC_VIEWER_STDOUT_WORLD)); 99 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "Local to global mapping of redundant2 vector\n")); 100 PetscCall(ISLocalToGlobalMappingView(ltog[2], PETSC_VIEWER_STDOUT_WORLD)); 101 PetscCall(PetscViewerASCIIPrintf(PETSC_VIEWER_STDOUT_WORLD, "Local to global mapping of local2 vector\n")); 102 PetscCall(ISLocalToGlobalMappingView(ltog[3], PETSC_VIEWER_STDOUT_WORLD)); 103 104 for (i = 0; i < 4; i++) PetscCall(ISLocalToGlobalMappingDestroy(<og[i])); 105 PetscCall(PetscFree(ltog)); 106 107 PetscCall(DMDestroy(&da1)); 108 PetscCall(DMDestroy(&dmred1)); 109 PetscCall(DMDestroy(&dmred2)); 110 PetscCall(DMDestroy(&da2)); 111 PetscCall(VecDestroy(&redundant1)); 112 PetscCall(VecDestroy(&redundant2)); 113 PetscCall(VecDestroy(&local1)); 114 PetscCall(VecDestroy(&local2)); 115 PetscCall(VecDestroy(&global)); 116 PetscCall(DMDestroy(&packer)); 117 PetscCall(PetscFinalize()); 118 return 0; 119 } 120 121 /*TEST 122 123 build: 124 requires: !complex 125 126 test: 127 nsize: 3 128 129 test: 130 suffix: 2 131 nsize: 3 132 args: -gather_add 133 134 TEST*/ 135