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Subject: Re: [OMPI users] Program does not finish after MPI_Finalize()
From: Ralph Castain (rhc_at_[hidden])
Date: 2010-05-24 02:35:17


It looks to me like you are getting version confusion - your path and ld_library_path aren't pointing to the place where you installed 1.4.1 and you are either getting someone else's mpiexec or getting 1.2.x instead. Could also be that mpicc isn't the one from 1.4.1 either.

Check to ensure that the mpiexec and mpicc you are using are from 1.4.1, and that your environment is pointing to the right place.

On May 24, 2010, at 12:15 AM, Yves Caniou wrote:

> Dear All,
> (follows a previous mail)
>
> I don't understand the strange behavior of this small code: sometimes it ends, sometimes not.
> The output of MPI_Finalized is 1 (for each processes if n>1), but the code doesn't end. I am forced to use Ctrl-C.
>
> I compiled it with the command line:
> "mpicc --std=c99" / gcc is 4.5, on a Quad-Core AMD Opteron(tm) Processor 8356
> "mpiexec -n 1 a.out" or "mpiexec -n 2 a.out" to run the code.
> "ps aux" returns that the program is in Sl+ state.
>
> Sometimes, I can see also a line like this:
> p10015 6892 0.1 0.0 43376 1828 ? Ssl 14:50 0:00 orted --hnp --set-sid --report-uri 8 --singleton-died-pipe 9
>
> Is this a bug? Do I do something wrong?
> If you have any tips...
> Thank you.
>
> ---------
> #include "stdio.h"
> #include "mpi.h"
>
> int
> main(int argc, char *argv[])
> {
> int my_num, mpi_size ;
> int flag ;
>
> MPI_Init(&argc, &argv) ;
>
> MPI_Comm_rank(MPI_COMM_WORLD, &my_num);
> printf("%d calls MPI_Finalize()\n\n\n", my_num) ;
>
> MPI_Finalize() ;
>
> MPI_Finalized(&flag) ;
> printf("MPI finalized: %d\n", flag) ;
> return 0 ;
> }
> -------
>
> --
> Yves Caniou
> Associate Professor at Université Lyon 1,
> Member of the team project INRIA GRAAL in the LIP ENS-Lyon,
> Délégation CNRS in Japan French Laboratory of Informatics (JFLI),
> * in Information Technology Center, The University of Tokyo,
> 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8658, Japan
> tel: +81-3-5841-0540
> * in National Institute of Informatics
> 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan
> tel: +81-3-4212-2412
> http://graal.ens-lyon.fr/~ycaniou/
>
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