Actual source code: ex16.c
2: static char help[] = "Tests calling PetscOptionsSetValue() before PetscInitialize()\n\n";
4: #include <petscsys.h>
5: int main(int argc,char **argv)
6: {
8: PetscMPIInt rank,size;
10: /*
11: Every PETSc routine should begin with the PetscInitialize() routine.
12: argc, argv - These command line arguments are taken to extract the options
13: supplied to PETSc and options supplied to MPI.
14: help - When PETSc executable is invoked with the option -help,
15: it prints the various options that can be applied at
16: runtime. The user can use the "help" variable place
17: additional help messages in this printout.
19: Since when PetscInitialize() returns with an error the PETSc data structures
20: may not be set up hence we cannot call PetscCall() hence directly return the error code.
22: Since PetscOptionsSetValue() is called before the PetscInitialize() we cannot call
23: PetscCall() on the error code and just return it directly.
24: */
25: PetscOptionsSetValue(NULL,"-no_signal_handler","true");if (ierr) return ierr;
26: PetscInitialize(&argc,&argv,(char*)0,help);
27: MPI_Comm_size(PETSC_COMM_WORLD,&size);
28: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
29: PetscPrintf(PETSC_COMM_WORLD,"Number of processors = %d, rank = %d\n",size,rank);
30: PetscFinalize();
31: return 0;
32: }
34: /*TEST
36: test:
37: requires: defined(PETSC_USE_LOG)
38: nsize: 2
39: args: -options_view -get_total_flops
40: filter: egrep -v "(cuda_initialize|malloc|display|nox|Total flops|saws_port_auto_select|vecscatter_mpi1|options_left|error_output_stdout|check_pointer_intensity|use_gpu_aware_mpi|checkstack)"
42: TEST*/