1 static char help[] = "Test HDF5 input and output.\n\ 2 This exposed a bug with sharing discretizations.\n\n\n"; 3 4 #include <petscdmforest.h> 5 #include <petscdmplex.h> 6 #include <petscviewerhdf5.h> 7 8 int main (int argc, char **argv) 9 { 10 11 DM base, forest, plex; 12 Vec g, g2; 13 PetscSection s; 14 PetscViewer viewer; 15 PetscReal diff; 16 PetscInt min_refine = 2, overlap = 0; 17 PetscInt vStart, vEnd, v; 18 19 CHKERRQ(PetscInitialize(&argc, &argv, NULL, help)); 20 21 CHKERRQ(DMCreate(PETSC_COMM_WORLD, &base)); 22 CHKERRQ(DMSetType(base, DMPLEX)); 23 CHKERRQ(DMSetFromOptions(base)); 24 25 CHKERRQ(DMCreate(PETSC_COMM_WORLD, &forest)); 26 CHKERRQ(DMSetType(forest, DMP4EST)); 27 CHKERRQ(DMForestSetBaseDM(forest, base)); 28 CHKERRQ(DMForestSetInitialRefinement(forest, min_refine)); 29 CHKERRQ(DMForestSetPartitionOverlap(forest, overlap)); 30 CHKERRQ(DMSetUp(forest)); 31 CHKERRQ(DMDestroy(&base)); 32 CHKERRQ(DMViewFromOptions(forest, NULL, "-dm_view")); 33 34 CHKERRQ(DMConvert(forest, DMPLEX, &plex)); 35 CHKERRQ(DMPlexGetDepthStratum(plex, 0, &vStart, &vEnd)); 36 CHKERRQ(DMDestroy(&plex)); 37 CHKERRQ(PetscSectionCreate(PetscObjectComm((PetscObject) forest), &s)); 38 CHKERRQ(PetscSectionSetChart(s, vStart, vEnd)); 39 for (v = vStart; v < vEnd; ++v) CHKERRQ(PetscSectionSetDof(s, v, 1)); 40 CHKERRQ(PetscSectionSetUp(s)); 41 CHKERRQ(DMSetLocalSection(forest, s)); 42 CHKERRQ(PetscSectionDestroy(&s)); 43 44 CHKERRQ(DMCreateGlobalVector(forest, &g)); 45 CHKERRQ(PetscObjectSetName((PetscObject) g, "g")); 46 CHKERRQ(VecSet(g, 1.0)); 47 CHKERRQ(PetscViewerHDF5Open(PETSC_COMM_WORLD, "forest.h5", FILE_MODE_WRITE, &viewer)); 48 CHKERRQ(VecView(g, viewer)); 49 CHKERRQ(PetscViewerDestroy(&viewer)); 50 51 CHKERRQ(DMCreateGlobalVector(forest, &g2)); 52 CHKERRQ(PetscObjectSetName((PetscObject) g2, "g")); 53 CHKERRQ(PetscViewerHDF5Open(PETSC_COMM_WORLD, "forest.h5", FILE_MODE_READ, &viewer)); 54 CHKERRQ(VecLoad(g2, viewer)); 55 CHKERRQ(PetscViewerDestroy(&viewer)); 56 57 /* Check if the data is the same*/ 58 CHKERRQ(VecAXPY(g2, -1.0, g)); 59 CHKERRQ(VecNorm(g2, NORM_INFINITY, &diff)); 60 if (diff > PETSC_MACHINE_EPSILON) CHKERRQ(PetscPrintf(PETSC_COMM_WORLD, "Check failed: %g\n", (double) diff)); 61 62 CHKERRQ(VecDestroy(&g)); 63 CHKERRQ(VecDestroy(&g2)); 64 CHKERRQ(DMDestroy(&forest)); 65 CHKERRQ(PetscFinalize()); 66 return 0; 67 } 68 69 /*TEST 70 71 build: 72 requires: hdf5 p4est 73 74 test: 75 args: -dm_plex_simplex 0 -dm_plex_box_faces 3,3 76 77 TEST*/ 78