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Subject: Re: [OMPI users] OpenMPI deadlocks and race conditions ?
From: Eugene Loh (Eugene.Loh_at_[hidden])
Date: 2009-05-18 19:26:26


François PELLEGRINI wrote:
users-request@open-mpi.org wrote:
  
Date: Thu, 14 May 2009 17:06:07 -0700
From: Eugene Loh <Eugene.Loh@Sun.COM>
Subject: Re: [OMPI users] OpenMPI deadlocks and race conditions ?
To: Open MPI Users <users@open-mpi.org>

Fran?ois PELLEGRINI wrote:
    
I sometimes run into deadlocks in OpenMPI (1.3.3a1r21206), when
running my MPI+threaded PT-Scotch software.
      
So, are there multiple threads per process that perform message-passing 
operations?
    

Yes. I use the MPI_THREAD_MULTIPLE level of MPI.
You mentioned that the problem was pretty easy to reproduce.  Could you send a simple test case (simple means few lines of code and doesn't take a large system to run)?