1 static char help[] = "Tests VecSetValues() and VecSetValuesBlocked() on MPI vectors.\n\
2 Where at least a couple of mallocs will occur in the stash code.\n\n";
3
4 #include <petscvec.h>
5
main(int argc,char ** argv)6 int main(int argc, char **argv)
7 {
8 PetscMPIInt size;
9 PetscInt i, j, r, n = 50, repeat = 1, bs;
10 PetscScalar val, *vals, zero = 0.0;
11 PetscBool inv = PETSC_FALSE, subset = PETSC_FALSE, flg;
12 Vec x, y;
13
14 PetscFunctionBeginUser;
15 PetscCall(PetscInitialize(&argc, &argv, NULL, help));
16 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size));
17 bs = size;
18
19 PetscCall(PetscOptionsGetInt(NULL, NULL, "-repeat", &repeat, NULL));
20 PetscCall(PetscOptionsGetBool(NULL, NULL, "-subset", &subset, NULL));
21 PetscCall(PetscOptionsGetBool(NULL, NULL, "-invert", &inv, NULL));
22 PetscCall(PetscOptionsGetInt(NULL, NULL, "-n", &n, NULL));
23 PetscCall(PetscOptionsGetInt(NULL, NULL, "-bs", &bs, NULL));
24 PetscCall(VecCreate(PETSC_COMM_WORLD, &x));
25 PetscCall(VecSetSizes(x, PETSC_DECIDE, n * bs));
26 PetscCall(VecSetBlockSize(x, bs));
27 PetscCall(VecSetFromOptions(x));
28 PetscCall(VecDuplicate(x, &y));
29
30 if (subset) PetscCall(VecSetOption(x, VEC_SUBSET_OFF_PROC_ENTRIES, PETSC_TRUE));
31
32 for (r = 0; r < repeat; r++) {
33 /* Assemble the full vector on the first and last iteration, otherwise don't set any values */
34 for (i = 0; i < n * bs * (!r || !(repeat - 1 - r)); i++) {
35 val = i * 1.0;
36 PetscCall(VecSetValues(x, 1, &i, &val, INSERT_VALUES));
37 }
38 PetscCall(VecAssemblyBegin(x));
39 PetscCall(VecAssemblyEnd(x));
40 if (!r) PetscCall(VecCopy(x, y)); /* Save result of first assembly */
41 }
42
43 PetscCall(VecView(x, PETSC_VIEWER_STDOUT_WORLD));
44 PetscCall(VecEqual(x, y, &flg));
45 if (!flg) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Vectors from repeat assembly do not match."));
46
47 /* Create a new vector because the old stash is a subset. */
48 PetscCall(VecDestroy(&x));
49 PetscCall(VecDuplicate(y, &x));
50 if (subset) PetscCall(VecSetOption(x, VEC_SUBSET_OFF_PROC_ENTRIES, PETSC_TRUE));
51
52 /* Now do the blocksetvalues */
53 PetscCall(VecSet(x, zero));
54 PetscCall(PetscMalloc1(bs, &vals));
55 for (r = 0; r < repeat; r++) {
56 PetscInt up = n * (!r || !(repeat - 1 - r));
57 /* Assemble the full vector on the first and last iteration, otherwise don't set any values */
58 for (i = 0; i < up; i++) {
59 PetscInt ii = inv ? up - i - 1 : i;
60 for (j = 0; j < bs; j++) vals[j] = (ii * bs + j) * 1.0;
61 PetscCall(VecSetValuesBlocked(x, 1, &ii, vals, INSERT_VALUES));
62 }
63 PetscCall(VecAssemblyBegin(x));
64 PetscCall(VecAssemblyEnd(x));
65 if (!r) PetscCall(VecCopy(x, y)); /* Save result of first assembly */
66 }
67
68 PetscCall(VecView(x, PETSC_VIEWER_STDOUT_WORLD));
69 PetscCall(VecEqual(x, y, &flg));
70 if (!flg) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Vectors from repeat block assembly do not match."));
71
72 PetscCall(VecDestroy(&x));
73 PetscCall(VecDestroy(&y));
74 PetscCall(PetscFree(vals));
75 PetscCall(PetscFinalize());
76 return 0;
77 }
78
79 /*TEST
80
81 test:
82 nsize: 3
83 args: -n 126
84
85 test:
86 suffix: bts_test_inv_error
87 nsize: 3
88 args: -n 4 -invert -bs 2
89 output_file: output/ex29_test_inv_error.out
90
91 test:
92 suffix: bts
93 nsize: 3
94 args: -n 126 -vec_assembly_legacy
95 output_file: output/ex29_1.out
96
97 test:
98 suffix: bts_2
99 nsize: 3
100 args: -n 126 -vec_assembly_legacy -repeat 2
101 output_file: output/ex29_1.out
102
103 test:
104 suffix: bts_2_subset
105 nsize: 3
106 args: -n 126 -vec_assembly_legacy -repeat 2 -subset
107 output_file: output/ex29_1.out
108
109 test:
110 suffix: bts_2_subset_proper
111 nsize: 3
112 args: -n 126 -vec_assembly_legacy -repeat 5 -subset
113 output_file: output/ex29_1.out
114
115 TEST*/
116