Re: [OMPI users] users Digest, Vol 536, Issue 1

[Mohammad Huwaidi]

I tried to use multi-threading using OpenMPI but it did not workout for 
me; however, it worked perfectly with MPICH2.

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Today's Topics:

   1. Re: multithreading support (Jeff Squyres)
   2. Re: Issues with Get/Put and IRecv (Mike Houston)
   3. HotI 2007 Call for Papers -- 4th call. Deadline March     31st is
      approaching (Weikuan Yu)
   4. segfault with netpipe & ompi 1.2 + MX (32bit only)
      (Nicolas Niclausse)


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Message: 1
Date: Tue, 20 Mar 2007 20:57:21 -0400
From: Jeff Squyres <jsquy...@cisco.com>
Subject: Re: [OMPI users] multithreading support
To: Open MPI Users <us...@open-mpi.org>
Message-ID: <b3c1b097-2fc7-46d4-9667-c4c8be2d0...@cisco.com>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

On Mar 16, 2007, at 1:35 AM, Chevchenkovic Chevchenkovic wrote:

 Could someone let me know about the status of multithread support in
openMPI and MVAPICH. I  got some details about MVAPICH which says that
it is supported for MVAPICH2 but I am not sure of the same for
openMPI.

Open MPI's threading support is "light testing", at best.  In  
reality, it probably will not work.  Threading support was designed  
into the system from the beginning, but we have not really got around  
to debugging / testing it yet.  It is possible that we will do so  
over the next few months; a few of the Open MPI member organizations  
indicated that they will be working on threading support for the v1.3  
series (probably towards the end of this year -- v1.3 is very much in  
the planning/definition stage at this point).

We cannot really comment on MVAPICH2 here; it's an entirely different  
software project.  You'll probably want to post to their mailing list  
to get an answer.


--

Regards,
Mohammad Huwaidi

We can't resolve problems by using the same kind of thinking we used
when we created them.
                                                --Albert Einstein
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