You need to give the path to the executable, for example, ./ex43 etc. Dmitry. On Mon, Aug 17, 2015 at 11:02 AM Xujun Zhao <[email protected]> wrote:
> No. It gives the following error msg: > > mpirun -np 2 ex43 > > [proxy:0:[email protected]] [proxy:0:[email protected]] > HYDU_create_process (utils/launch/launch.c:75): HYDU_create_process > (utils/launch/launch.c:75): execvp error on file ex43 (No such file or > directory) > > execvp error on file ex43 (No such file or directory) > > On Mon, Aug 17, 2015 at 10:57 AM, Matthew Knepley <[email protected]> > wrote: > >> On Mon, Aug 17, 2015 at 10:49 AM, Xujun Zhao <[email protected]> wrote: >> >>> Hi all, >>> >>> I want PETSc to generate random vector using VecSetRandom() following >>> given examples, but failed and showed some "out of memory" error. The >>> following is the code, which goes well until it reaches VecSetRandom(). Can >>> anyone help me figure out the reason? Thanks a lot. >>> >> >> Does src/vec/vec/examples/tests/ex43.c run for you? >> >> Thanks, >> >> Matt >> >> >>> XZ >>> >>> >>> >>> -------------------------------------------------------------------------------------------- >>> Vec u; >>> PetscRandom rand_ctx; /* random number generator context */ >>> PetscMPIInt size, rank; >>> PetscInt n, dn; >>> >>> >>> MPI_Comm_rank(PETSC_COMM_WORLD,&rank);//CHKERRQ(ierr); >>> MPI_Comm_size(PETSC_COMM_WORLD,&size);//CHKERRQ(ierr); >>> n = N/size + 1; >>> dn = n*size - N; >>> if ( dn>0 && rank<dn ) n -= 1; >>> printf("--->test in petsc_random_vector(): rank = %d, n = >>> %d\n",rank,n); >>> >>> >>> VecCreate(PETSC_COMM_WORLD,&u); >>> VecSetSizes(u,n,N); >>> PetscRandomCreate(PETSC_COMM_WORLD, &rand_ctx); >>> #if defined(PETSC_HAVE_DRAND48) >>> PetscRandomSetType(rand_ctx,PETSCRAND48); >>> #elif defined(PETSC_HAVE_RAND) >>> PetscRandomSetType(rand_ctx,PETSCRAND); >>> #endif >>> PetscRandomSetFromOptions(rand_ctx); >>> >>> >>> VecSetRandom(u,rand_ctx); >>> PetscRandomDestroy(&rand_ctx); >>> >> >> >> >> -- >> What most experimenters take for granted before they begin their >> experiments is infinitely more interesting than any results to which their >> experiments lead. >> -- Norbert Wiener >> > >
