Actual source code: ex190.c
petsc-3.6.1 2015-08-06
1: static char help[] = "Tests MatLoad() with uneven dimensions set in program\n\n";
3: #include <petscmat.h>
7: int main(int argc,char **args)
8: {
9: Mat A;
10: PetscViewer fd;
11: char file[PETSC_MAX_PATH_LEN];
13: PetscBool flg;
14: PetscMPIInt rank;
16: PetscInitialize(&argc,&args,(char*)0,help);
17: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
19: /* Determine files from which we read the matrix */
20: PetscOptionsGetString(NULL,"-f",file,PETSC_MAX_PATH_LEN,&flg);
21: if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"Must indicate binary file with the -f");
23: /* Load matrices */
24: PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd);
25: MatCreate(PETSC_COMM_WORLD,&A);
26: MatSetFromOptions(A);
27: MatSetBlockSize(A,2);
28: if (!rank) {
29: MatSetSizes(A, 4, PETSC_DETERMINE, PETSC_DETERMINE,PETSC_DETERMINE);
30: } else {
31: MatSetSizes(A, 8, PETSC_DETERMINE, PETSC_DETERMINE,PETSC_DETERMINE);
32: }
33: MatLoad(A,fd);
34: PetscViewerDestroy(&fd);
35: MatDestroy(&A);
36: PetscFinalize();
37: return 0;
38: }