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From: imran shaik (sk.imran_at_[hidden])
Date: 2006-05-27 01:42:34

Hi jeff,
  Thanks, i have installed openMPI with the threads enabled option as per the readme file of openmpi. (alpha 7 of openmpi1.1)
  Hi have a problem with mpirun.
  1)When there is no relevant executable present on the remote node where i want to launch the mpi process, mpirun just hangs without any error message. Shall i interpret it as no executable present?once i copy the executable to that node, it proceeds fine. Why no error message is given by mpirun, as in lam, no file found etc..
  2)when i launch many processes , oversubscribe a node heavily, it hangs. Neither error message, nor i cant do kind. For example a simple broadcast where each process executes a bcast call, with 110 processes per node.(My p4,256MPB ram,tcp network) ,it just hangs.
  3)sometimes, for the same program with 45 process, it says 4 were killed automatically.
  I am afraid, at times. Anything wrong with my program or mpirun has some problem.?

"Jeff Squyres (jsquyres)" <jsquyres_at_[hidden]> wrote: Based on your questions from the LAM list, I think you are actually asking how to get support for MPI_THREAD_MULTIPLE (which will include pthread support on Linux systems).
  Use the --enable-mpi-threads option to configure to enable support for MPI_THREAD_MULTIPLE (please see the README file for more details). Per the warning from my previous mail (, this support is only partially implemented and tested.

    From: users-bounces_at_[hidden] [mailto:users-bounces_at_[hidden]] On Behalf Of imran shaik
Sent: Friday, May 26, 2006 2:49 AM
To: openMPI mailing list
Subject: [OMPI users] Default configure options

I want to use phtreads with openmpi.
Does it configure with pthreads enabled by default or what options do i need to mention?


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