1 static char help[] = "Test MatMatMatMult\n\ 2 Reads PETSc matrix A B and C, then comput D=A*B*C \n\ 3 Input parameters include\n\ 4 -fA <input_file> -fB <input_file> -fC <input_file> \n\n"; 5 6 #include <petscmat.h> 7 8 int main(int argc, char **args) { 9 Mat A, B, C, D, BC, ABC; 10 PetscViewer fd; 11 char file[3][PETSC_MAX_PATH_LEN]; 12 PetscBool flg; 13 14 PetscFunctionBeginUser; 15 PetscCall(PetscInitialize(&argc, &args, (char *)0, help)); 16 /* read matrices A, B and C */ 17 PetscCall(PetscOptionsGetString(NULL, NULL, "-fA", file[0], sizeof(file[0]), &flg)); 18 PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_USER, "Must indicate binary file with the -fA options"); 19 20 PetscCall(PetscOptionsGetString(NULL, NULL, "-fB", file[1], sizeof(file[1]), &flg)); 21 PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_USER, "Must indicate binary file with the -fB options"); 22 23 PetscCall(PetscOptionsGetString(NULL, NULL, "-fC", file[2], sizeof(file[2]), &flg)); 24 PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_USER, "Must indicate binary file with the -fC options"); 25 26 /* Load matrices */ 27 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD, file[0], FILE_MODE_READ, &fd)); 28 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 29 PetscCall(MatLoad(A, fd)); 30 PetscCall(PetscViewerDestroy(&fd)); 31 32 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD, file[1], FILE_MODE_READ, &fd)); 33 PetscCall(MatCreate(PETSC_COMM_WORLD, &B)); 34 PetscCall(MatLoad(B, fd)); 35 PetscCall(PetscViewerDestroy(&fd)); 36 37 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD, file[2], FILE_MODE_READ, &fd)); 38 PetscCall(MatCreate(PETSC_COMM_WORLD, &C)); 39 PetscCall(MatLoad(C, fd)); 40 PetscCall(PetscViewerDestroy(&fd)); 41 42 /* Test MatMatMult() */ 43 PetscCall(MatMatMult(B, C, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &BC)); 44 PetscCall(MatMatMult(A, BC, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &ABC)); 45 46 PetscCall(MatMatMatMult(A, B, C, MAT_INITIAL_MATRIX, PETSC_DEFAULT, &D)); 47 PetscCall(MatMatMatMult(A, B, C, MAT_REUSE_MATRIX, PETSC_DEFAULT, &D)); 48 /* PetscCall(MatView(D,PETSC_VIEWER_STDOUT_WORLD)); */ 49 50 PetscCall(MatEqual(ABC, D, &flg)); 51 PetscCheck(flg, PetscObjectComm((PetscObject)A), PETSC_ERR_ARG_INCOMP, "ABC != D"); 52 53 PetscCall(MatDestroy(&ABC)); 54 PetscCall(MatDestroy(&BC)); 55 PetscCall(MatDestroy(&D)); 56 PetscCall(MatDestroy(&C)); 57 PetscCall(MatDestroy(&B)); 58 PetscCall(MatDestroy(&A)); 59 PetscCall(PetscFinalize()); 60 return 0; 61 } 62 63 /*TEST 64 65 test: 66 requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES) 67 args: -fA ${DATAFILESPATH}/matrices/matmatmatmult/A.bin -fB ${DATAFILESPATH}/matrices/matmatmatmult/B.bin -fC ${DATAFILESPATH}/matrices/matmatmatmult/C.bin 68 output_file: output/ex198.out 69 70 test: 71 suffix: 2 72 nsize: 3 73 requires: datafilespath !complex double !defined(PETSC_USE_64BIT_INDICES) 74 args: -fA ${DATAFILESPATH}/matrices/matmatmatmult/A.bin -fB ${DATAFILESPATH}/matrices/matmatmatmult/B.bin -fC ${DATAFILESPATH}/matrices/matmatmatmult/C.bin 75 output_file: output/ex198.out 76 77 TEST*/ 78