1 #include <petscis.h> /*I "petscis.h" I*/ 2 #include <petsc/private/isimpl.h> 3 #include <petsc/private/viewerimpl.h> 4 #include <petsclayouthdf5.h> 5 6 PetscErrorCode ISView_Binary(IS is, PetscViewer viewer) 7 { 8 PetscBool skipHeader; 9 PetscLayout map; 10 PetscInt tr[2], n, s, N; 11 const PetscInt *iarray; 12 13 PetscFunctionBegin; 14 PetscCall(PetscViewerSetUp(viewer)); 15 PetscCall(PetscViewerBinaryGetSkipHeader(viewer, &skipHeader)); 16 17 PetscCall(ISGetLayout(is, &map)); 18 PetscCall(PetscLayoutGetLocalSize(map, &n)); 19 PetscCall(PetscLayoutGetRange(map, &s, NULL)); 20 PetscCall(PetscLayoutGetSize(map, &N)); 21 22 /* write IS header */ 23 tr[0] = IS_FILE_CLASSID; 24 tr[1] = N; 25 if (!skipHeader) PetscCall(PetscViewerBinaryWrite(viewer, tr, 2, PETSC_INT)); 26 27 /* write IS indices */ 28 PetscCall(ISGetIndices(is, &iarray)); 29 PetscCall(PetscViewerBinaryWriteAll(viewer, iarray, n, s, N, PETSC_INT)); 30 PetscCall(ISRestoreIndices(is, &iarray)); 31 PetscFunctionReturn(PETSC_SUCCESS); 32 } 33 34 #if defined(PETSC_HAVE_HDF5) 35 /* 36 This should handle properly the cases where PetscInt is 32 or 64 and hsize_t is 32 or 64. That is properly casting with 37 checks back and forth between the two types of variables. 38 */ 39 static PetscErrorCode ISLoad_HDF5(IS is, PetscViewer viewer) 40 { 41 PetscInt *ind; 42 const char *isname; 43 44 PetscFunctionBegin; 45 PetscCheck(((PetscObject)is)->name, PetscObjectComm((PetscObject)is), PETSC_ERR_SUP, "IS name must be given using PetscObjectSetName() before ISLoad() since HDF5 can store multiple objects in a single file"); 46 PetscCall(PetscObjectGetName((PetscObject)is, &isname)); 47 #if defined(PETSC_USE_64BIT_INDICES) 48 PetscCall(PetscViewerHDF5Load(viewer, isname, is->map, H5T_NATIVE_LLONG, (void **)&ind)); 49 #else 50 PetscCall(PetscViewerHDF5Load(viewer, isname, is->map, H5T_NATIVE_INT, (void **)&ind)); 51 #endif 52 PetscCall(ISGeneralSetIndices(is, is->map->n, ind, PETSC_OWN_POINTER)); 53 PetscCall(PetscInfo(is, "Read IS object with name %s of size %" PetscInt_FMT ":%" PetscInt_FMT "\n", isname, is->map->n, is->map->N)); 54 PetscFunctionReturn(PETSC_SUCCESS); 55 } 56 #endif 57 58 static PetscErrorCode ISLoad_Binary(IS is, PetscViewer viewer) 59 { 60 PetscBool isgeneral, skipHeader; 61 PetscInt tr[2], rows, N, n, s, *idx; 62 PetscLayout map; 63 64 PetscFunctionBegin; 65 PetscCall(PetscObjectTypeCompare((PetscObject)is, ISGENERAL, &isgeneral)); 66 PetscCheck(isgeneral, PetscObjectComm((PetscObject)is), PETSC_ERR_ARG_INCOMP, "IS must be of type ISGENERAL to load into it"); 67 PetscCall(PetscViewerSetUp(viewer)); 68 PetscCall(PetscViewerBinaryGetSkipHeader(viewer, &skipHeader)); 69 70 PetscCall(ISGetLayout(is, &map)); 71 PetscCall(PetscLayoutGetSize(map, &N)); 72 73 /* read IS header */ 74 if (!skipHeader) { 75 PetscCall(PetscViewerBinaryRead(viewer, tr, 2, NULL, PETSC_INT)); 76 PetscCheck(tr[0] == IS_FILE_CLASSID, PetscObjectComm((PetscObject)viewer), PETSC_ERR_FILE_UNEXPECTED, "Not an IS next in file"); 77 PetscCheck(tr[1] >= 0, PetscObjectComm((PetscObject)viewer), PETSC_ERR_FILE_UNEXPECTED, "IS size (%" PetscInt_FMT ") in file is negative", tr[1]); 78 PetscCheck(N < 0 || N == tr[1], PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "IS in file different size (%" PetscInt_FMT ") than input IS (%" PetscInt_FMT ")", tr[1], N); 79 rows = tr[1]; 80 } else { 81 PetscCheck(N >= 0, PETSC_COMM_SELF, PETSC_ERR_USER, "IS binary file header was skipped, thus the user must specify the global size of input IS"); 82 rows = N; 83 } 84 85 /* set IS size if not already set */ 86 if (N < 0) PetscCall(PetscLayoutSetSize(map, rows)); 87 PetscCall(PetscLayoutSetUp(map)); 88 89 /* get IS sizes and check global size */ 90 PetscCall(PetscLayoutGetSize(map, &N)); 91 PetscCall(PetscLayoutGetLocalSize(map, &n)); 92 PetscCall(PetscLayoutGetRange(map, &s, NULL)); 93 PetscCheck(N == rows, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "IS in file different size (%" PetscInt_FMT ") than input IS (%" PetscInt_FMT ")", rows, N); 94 95 /* read IS indices */ 96 PetscCall(PetscMalloc1(n, &idx)); 97 PetscCall(PetscViewerBinaryReadAll(viewer, idx, n, s, N, PETSC_INT)); 98 PetscCall(ISGeneralSetIndices(is, n, idx, PETSC_OWN_POINTER)); 99 PetscFunctionReturn(PETSC_SUCCESS); 100 } 101 102 PetscErrorCode ISLoad_Default(IS is, PetscViewer viewer) 103 { 104 PetscBool isbinary, ishdf5; 105 106 PetscFunctionBegin; 107 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERBINARY, &isbinary)); 108 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERHDF5, &ishdf5)); 109 if (isbinary) { 110 PetscCall(ISLoad_Binary(is, viewer)); 111 } else if (ishdf5) { 112 #if defined(PETSC_HAVE_HDF5) 113 PetscCall(ISLoad_HDF5(is, viewer)); 114 #endif 115 } 116 PetscFunctionReturn(PETSC_SUCCESS); 117 } 118