[petsc-dev] always calling MPI_Init_thread?

14 Feb 2013


      Do we really ALWAYS want to call this version even if we are not monkeying with threads at ALL?

    Thanks

   Barry

 ierr = MPI_Initialized(&flag);CHKERRQ(ierr);
  if (!flag) {
    if (PETSC_COMM_WORLD != MPI_COMM_NULL) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"You cannot set PETSC_COMM_WORLD if you have not initialized MPI first");
#if defined(PETSC_HAVE_MPI_INIT_THREAD)
    {
      PetscMPIInt provided;
      ierr = MPI_Init_thread(argc,args,MPI_THREAD_FUNNELED,&provided);CHKERRQ(ierr);
    }
#else
    ierr = MPI_Init(argc,args);CHKERRQ(ierr);
#endif

[petsc-dev] always calling MPI_Init_thread?

Barry Smith