1c4762a1bSJed Brown! Tests calling PetscOptionsSetValue() before PetscInitialize(): Fortran Example 2c4762a1bSJed Brown 3c4762a1bSJed Brownprogram main 4c4762a1bSJed Brown#include <petsc/finclude/petscsys.h> 5*8c8af28eSPedro Ricardo C. Souza use petscmpi ! or mpi or mpi_f08 6c4762a1bSJed Brown use petscsys 7c4762a1bSJed Brown 8c4762a1bSJed Brown implicit none 9c4762a1bSJed Brown PetscErrorCode :: ierr 10c4762a1bSJed Brown PetscMPIInt :: myRank,mySize 11c4762a1bSJed Brown character(len=80) :: outputString 12c4762a1bSJed Brown 13c4762a1bSJed Brown ! Every PETSc routine should begin with the PetscInitialize() routine. 14c4762a1bSJed Brown 15c4762a1bSJed Brown call PetscOptionsSetValue(PETSC_NULL_OPTIONS,"-no_signal_handler","true",ierr) 16c4762a1bSJed Brown call PetscInitialize(PETSC_NULL_CHARACTER,ierr) 17c4762a1bSJed Brown if (ierr/=0) then 18c4762a1bSJed Brown write(6,*) 'Unable to initialize PETSc' 19c4762a1bSJed Brown stop 20c4762a1bSJed Brown endif 21c4762a1bSJed Brown 22c4762a1bSJed Brown ! Since when PetscInitialize() returns with an error the PETSc data structures 23c4762a1bSJed Brown ! may not be set up hence we cannot call CHKERRA() hence directly return the error code. 24c4762a1bSJed Brown 25c4762a1bSJed Brown ! Since PetscOptionsSetValue() is called before the PetscInitialize() we cannot call 26c4762a1bSJed Brown ! CHKERRA() on the error code and just return it directly. 27c4762a1bSJed Brown 28c4762a1bSJed Brown ! We can now change the communicator universe for PETSc 29c4762a1bSJed Brown 30c4762a1bSJed Brown call MPI_Comm_size(MPI_COMM_WORLD,mySize,ierr); CHKERRA(ierr) 31c4762a1bSJed Brown call MPI_Comm_rank(MPI_COMM_WORLD,myRank,ierr); CHKERRA(ierr) 32c4762a1bSJed Brown write(outputString,*) 'Number of processors =',mySize,'rank =',myRank,'\n' 33c4762a1bSJed Brown call PetscPrintf(PETSC_COMM_WORLD,outputString,ierr); CHKERRA(ierr) 34c4762a1bSJed Brown call PetscFinalize(ierr) 35c4762a1bSJed Brown 36c4762a1bSJed Brownend program main 37c4762a1bSJed Brown 38c4762a1bSJed Brown!/*TEST 39c4762a1bSJed Brown! 40c4762a1bSJed Brown! test: 41956f8c0dSBarry Smith! requires: define(PETSC_USE_LOG) 42c4762a1bSJed Brown! nsize: 2 43c4762a1bSJed Brown! args: -options_view -get_total_flops 44c20d7725SJed Brown! filter: egrep -v "(malloc|display|nox|Total flops|saws_port_auto_select|vecscatter_mpi1|options_left|error_output_stdout|check_pointer_intensity|cuda_initialize|use_gpu_aware_mpi)" 45c4762a1bSJed Brown! 46c4762a1bSJed Brown!TEST*/ 47