1 static char help[] = "Creates MatSeqBAIJ matrix of given BS for timing tests of MatMult().\n"; 2 3 #include <petscmat.h> 4 5 int main(int argc, char **args) 6 { 7 Mat A; 8 Vec x, y; 9 PetscInt m = 50000, bs = 12, i, j, k, l, row, col, M, its = 25; 10 PetscScalar rval, *vals; 11 PetscRandom rdm; 12 13 PetscFunctionBeginUser; 14 PetscCall(PetscInitialize(&argc, &args, NULL, help)); 15 PetscCall(PetscOptionsGetInt(NULL, NULL, "-mat_block_size", &bs, NULL)); 16 PetscCall(PetscOptionsGetInt(NULL, NULL, "-its", &its, NULL)); 17 PetscCall(PetscOptionsGetInt(NULL, NULL, "-mat_size", &m, NULL)); 18 M = m * bs; 19 PetscCall(MatCreateSeqBAIJ(PETSC_COMM_SELF, bs, M, M, 27, NULL, &A)); 20 PetscCall(MatSetOption(A, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_TRUE)); 21 22 PetscCall(PetscRandomCreate(PETSC_COMM_SELF, &rdm)); 23 PetscCall(PetscRandomSetFromOptions(rdm)); 24 PetscCall(VecCreateSeq(PETSC_COMM_SELF, M, &x)); 25 PetscCall(VecDuplicate(x, &y)); 26 27 /* For each block row insert at most 27 blocks */ 28 PetscCall(PetscMalloc1(bs * bs, &vals)); 29 for (i = 0; i < m; i++) { 30 row = i; 31 for (j = 0; j < 27; j++) { 32 PetscCall(PetscRandomGetValue(rdm, &rval)); 33 col = (PetscInt)(PetscRealPart(rval) * m); 34 for (k = 0; k < bs; k++) { 35 for (l = 0; l < bs; l++) { 36 PetscCall(PetscRandomGetValue(rdm, &rval)); 37 vals[k * bs + l] = rval; 38 } 39 } 40 PetscCall(MatSetValuesBlocked(A, 1, &row, 1, &col, vals, INSERT_VALUES)); 41 } 42 } 43 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 44 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 45 PetscCall(PetscFree(vals)); 46 47 /* Time MatMult(), MatMultAdd() */ 48 for (i = 0; i < its; i++) { 49 PetscCall(VecSetRandom(x, rdm)); 50 PetscCall(MatMult(A, x, y)); 51 PetscCall(VecSetRandom(x, rdm)); 52 PetscCall(VecSetRandom(y, rdm)); 53 PetscCall(MatMultAdd(A, x, y, y)); 54 } 55 56 PetscCall(MatDestroy(&A)); 57 PetscCall(VecDestroy(&x)); 58 PetscCall(VecDestroy(&y)); 59 PetscCall(PetscRandomDestroy(&rdm)); 60 PetscCall(PetscFinalize()); 61 return 0; 62 } 63 64 /*TEST 65 66 testset: 67 requires: defined(PETSC_USING_64BIT_PTR) 68 output_file: output/empty.out 69 test: 70 suffix: 1 71 args: -mat_block_size 1 -mat_size 1000 -its 2 72 test: 73 suffix: 2 74 args: -mat_block_size 2 -mat_size 1000 -its 2 75 test: 76 suffix: 4 77 args: -mat_block_size 4 -mat_size 1000 -its 2 78 test: 79 suffix: 5 80 args: -mat_block_size 5 -mat_size 1000 -its 2 81 test: 82 suffix: 6 83 args: -mat_block_size 6 -mat_size 1000 -its 2 84 test: 85 suffix: 8 86 args: -mat_block_size 8 -mat_size 1000 -its 2 87 test: 88 suffix: 12 89 args: -mat_block_size 12 -mat_size 1000 -its 2 90 test: 91 suffix: 15 92 args: -mat_block_size 15 -mat_size 1000 -its 2 93 94 TEST*/ 95