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Subject: Re: [OMPI users] MPI_Init_thread(..., MPI_THREAD_SERIALIZED) hangs under OSX 10.8.4 if compiled with OpenMPI 1.7.1
From: Ralph Castain (rhc_at_[hidden])
Date: 2013-06-14 19:31:37


I have no idea how MacPorts configures OMPI - did you check the output of ompi_info to see if threading was even enabled?

On Jun 14, 2013, at 3:12 PM, Hans Ekkehard Plesser <hans.ekkehard.plesser_at_[hidden]> wrote:

>
> Hi!
>
> I use OpenMPI 1.7.1 from MacPorts (+threads +gcc47). When compiling a simple hello world program calling
>
> MPI_Init_thread(&argc, &argv, MPI_THREAD_SERIALIZED, &provided);
>
> the program hangs if run on more than one process. All works fine if I
>
> - either use MPI_THREAD_SINGLE
> - or use OpenMPI 1.6.4.
>
> The actual compiler invocation and compiler version are
>
> [Macintosh:~/tmp/hw] hep% openmpicc -o hw_mpi hw_mpi.c --showme
> /usr/bin/clang -o hw_mpi hw_mpi.c -I/opt/local/include/openmpi -L/opt/local/lib -lmpi
>
> [Macintosh:~/tmp/hw] hep% /usr/bin/clang --version
> Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
> Target: x86_64-apple-darwin12.4.0
> Thread model: posix
>
> The full program code is shown below. I have also reported this to the MacPorts bug tracker.
>
> Best regards,
> Hans E Plesser
>
> ------
> #include <stdio.h>
>
> #include <mpi.h>
>
> int main(int argc, char **argv)
> {
> int provided;
> MPI_Init_thread(&argc, &argv, MPI_THREAD_SERIALIZED, &provided);
>
> printf("Provided threading level: %d.\n", provided);
>
> int rank;
> MPI_Comm_rank(MPI_COMM_WORLD, &rank);
>
> printf("Hello, world! This is rank %d.\n", rank);
>
> MPI_Finalize();
> return 0;
> }
> ------
>
>
> --
>
> Dr. Hans Ekkehard Plesser, Associate Professor
> Head, Basic Science Section
>
> Dept. of Mathematical Sciences and Technology
> Norwegian University of Life Sciences
> PO Box 5003, 1432 Aas, Norway
>
> Phone +47 6496 5467
> Fax +47 6496 5401
> Email hans.ekkehard.plesser_at_[hidden]
> Home http://arken.umb.no/~plesser
>
>
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