1 2 static char help[] = "Tests ISDuplicate(), ISCopy(), ISShift(), ISEqualUnsorted(), ISEqual().\n\n"; 3 4 #include <petscis.h> 5 #include <petscviewer.h> 6 7 /* 8 type = 0 general 9 type = 1 stride 10 type = 2 block 11 */ 12 static PetscErrorCode CreateIS(MPI_Comm comm, PetscInt type, PetscInt n, PetscInt first, PetscInt step, IS *is) { 13 PetscInt *idx, i, j; 14 PetscMPIInt rank; 15 16 PetscFunctionBegin; 17 PetscCallMPI(MPI_Comm_rank(comm, &rank)); 18 first += rank * n * step; 19 switch (type) { 20 case 0: 21 PetscCall(PetscMalloc1(n, &idx)); 22 for (i = 0, j = first; i < n; i++, j += step) idx[i] = j; 23 PetscCall(ISCreateGeneral(comm, n, idx, PETSC_OWN_POINTER, is)); 24 break; 25 case 1: PetscCall(ISCreateStride(comm, n, first, step, is)); break; 26 case 2: 27 PetscCall(PetscMalloc1(n, &idx)); 28 for (i = 0, j = first; i < n; i++, j += step) idx[i] = j; 29 PetscCall(ISCreateBlock(comm, 1, n, idx, PETSC_OWN_POINTER, is)); 30 break; 31 } 32 PetscFunctionReturn(0); 33 } 34 35 int main(int argc, char **argv) { 36 IS is[128]; 37 IS tmp; 38 PetscInt n = 10, first = 0, step = 1, offset = 0; 39 PetscInt i, j = 0, type; 40 PetscBool verbose = PETSC_FALSE, flg; 41 MPI_Comm comm; 42 43 PetscFunctionBeginUser; 44 PetscCall(PetscInitialize(&argc, &argv, (char *)0, help)); 45 comm = PETSC_COMM_WORLD; 46 PetscCall(PetscArrayzero(is, sizeof(is) / sizeof(is[0]))); 47 PetscCall(PetscOptionsGetInt(NULL, NULL, "-n", &n, NULL)); 48 PetscCall(PetscOptionsGetInt(NULL, NULL, "-first", &first, NULL)); 49 PetscCall(PetscOptionsGetInt(NULL, NULL, "-step", &step, NULL)); 50 PetscCall(PetscOptionsGetInt(NULL, NULL, "-offset", &offset, NULL)); 51 PetscCall(PetscOptionsGetBool(NULL, NULL, "-verbose", &verbose, NULL)); 52 53 for (type = 0; type < 3; type++) { 54 PetscCall(CreateIS(comm, type, n, first + offset, step, &is[j])); 55 j++; 56 57 PetscCall(CreateIS(comm, type, n, first + offset, step, &is[j])); 58 PetscCall(ISCopy(is[j], is[j])); 59 j++; 60 61 PetscCall(CreateIS(comm, type, n, first + offset, step, &tmp)); 62 PetscCall(ISDuplicate(tmp, &is[j])); 63 PetscCall(ISCopy(tmp, is[j])); 64 PetscCall(ISDestroy(&tmp)); 65 j++; 66 67 PetscCall(CreateIS(comm, type, n, first + offset, step, &is[j])); 68 PetscCall(ISShift(is[j], 0, is[j])); 69 j++; 70 71 PetscCall(CreateIS(comm, type, n, first, step, &is[j])); 72 PetscCall(ISShift(is[j], offset, is[j])); 73 j++; 74 75 PetscCall(CreateIS(comm, type, n, first + offset, step, &tmp)); 76 PetscCall(ISDuplicate(tmp, &is[j])); 77 PetscCall(ISShift(tmp, 0, is[j])); 78 PetscCall(ISDestroy(&tmp)); 79 j++; 80 81 PetscCall(CreateIS(comm, type, n, first, step, &tmp)); 82 PetscCall(ISDuplicate(tmp, &is[j])); 83 PetscCall(ISShift(tmp, offset, is[j])); 84 PetscCall(ISDestroy(&tmp)); 85 j++; 86 87 PetscCall(CreateIS(comm, type, n, first + 2 * offset, step, &is[j])); 88 PetscCall(ISShift(is[j], -offset, is[j])); 89 j++; 90 } 91 PetscAssert(j < (PetscInt)(sizeof(is) / sizeof(is[0])), comm, PETSC_ERR_ARG_OUTOFRANGE, "assertion failed: j < sizeof(is)/sizeof(is[0])"); 92 PetscCall(ISViewFromOptions(is[0], NULL, "-is0_view")); 93 PetscCall(ISViewFromOptions(is[j / 2], NULL, "-is1_view")); 94 for (i = 0; i < j; i++) { 95 if (!is[i]) continue; 96 PetscCall(ISEqualUnsorted(is[i], is[0], &flg)); 97 PetscCheck(flg, comm, PETSC_ERR_PLIB, "is[%02" PetscInt_FMT "] differs from is[0]", i); 98 if (verbose) PetscCall(PetscPrintf(comm, "is[%02" PetscInt_FMT "] identical to is[0]\n", i)); 99 } 100 for (i = 0; i < j; i++) PetscCall(ISDestroy(&is[i])); 101 PetscCall(PetscFinalize()); 102 return 0; 103 } 104 105 /*TEST 106 107 test: 108 suffix: 1 109 nsize: 3 110 args: -n 6 -first {{-2 0 1 3}} -step {{-2 0 1 3}} 111 112 test: 113 suffix: 2 114 nsize: 2 115 args: -n 3 -first 2 -step -1 -is0_view -is1_view -verbose 116 117 TEST*/ 118