I installed MPICH and it was working normally. So I recompile OpenMPI and
reinstall it, and it works.
I had some problems with environment variables and I also solve it.]
Now it is working perfectly.
Well, Thanks for the support!
Nilton.
Em qui, 9 de mai de 2019 às 11:35, Jeff Squyres (jsquyres) <
jsquy...@cisco.com> escreveu:
> Stdout forwarding should continue to work in v4.0.x just like it did in
> v3.0.x. I.e., printf's from your app should appear in the stdout of mpirun.
>
> Sometimes they can get buffered, however, such as if you redirect the
> stdout to a file or to a pipe. Such shell buffering may only emit output
> when it sees \n's, or a buffer-full at a time (e.g., 4K?).
>
> For example (typed directly in my mail client -- YMMV):
>
> ---
> $ cat foo.c
> #include <mpi.h>
> int main(int args, char* argv[]) {
> MPI_Init(NULL, NULL);
> printf("Hello, world\n");
> sleep(60);
> MPI_Finalize();
> Return 0;
> }
> $ mpicc foo.c -o foo
> $ mpirun -np 1 foo
> Hello, world
> <...waits 60 seconds...>
> $ mpirun -np 1 foo | tee out.txt
> <...waits 60 seconds>
> Hello, world
> $
> ---
>
> The latter run may not emit anything for 60 seconds because the single
> line of "Hello, world" may not have been an entire buffer-full, so the pipe
> chose not to emit it until a) it fills its buffer, or b) the program
> completes.
>
> Buffering like that depends very much on how the buffering is implemented
> (e.g., by the shell). So it may be outside of Open MPI's control.
>
>
> > On May 8, 2019, at 9:02 PM, Nilton Luiz Queiroz Junior via users <
> users@lists.open-mpi.org> wrote:
> >
> > I had upgraded my MPI from 3.0.0 to 4.0.1 version, so when I compile
> (with mpicc) and run (with mpirun) any .c source file that uses printf
> function from stdio, i dont get the print results in stdout. Does anyone
> knows what it can be?
> >
> > I'm very thankful for your attention.
> >
> > Nilton.
> > _______________________________________________
> > users mailing list
> > users@lists.open-mpi.org
> > https://lists.open-mpi.org/mailman/listinfo/users
>
>
> --
> Jeff Squyres
> jsquy...@cisco.com
>
>
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