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 { 10 Mat A,B,C,D,BC,ABC; 11 PetscViewer fd; 12 char file[3][PETSC_MAX_PATH_LEN]; 13 PetscBool flg; 14 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