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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Dmitriy,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">MSMPI doesn’t support MPI_THREAD_MULTIPLE today, but it’s on our list of features to consider in future releases. We don’t yet have a concrete timeline for
such support, though. The feedback we’ve received in the past is that MPI_THREAD_MULTIPLE often regresses the MPI_THREAD_SERIALIZED model and applications can get better overall performance from having multiple MPI_THREAD_SERIALIZED applications rather than
a single MPI_THREAD_MULTIPLE application. This is the main reason we have been focusing on improving performance and scalability for the MPI_THREAD_SERIALIZED model.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Note that MPICH2 is on a different development schedule, so they may well have MPI_THREAD_MULTIPLE support, and can run on Windows HPC Server. Other MPI vendors
support MPI_THREAD_MULTIPLE on Windows too, for example Intel MPI. So while MSMPI doesn’t support MPI_THREAD_MULTIPLE, there’s nothing to prevent it in the Microsoft HPC platform: you can configure your cluster to use a different MPI library than MSMPI (e.g.
MPICH2, Intel MPI, Platform MPI, etc.)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hopefully this helped,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">-Fab<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Dmitriy Golovashkin [mailto:golovashkin@gmail.com]
<br>
<b>Sent:</b> Wednesday, March 30, 2011 3:09 PM<br>
<b>To:</b> Fab Tillier; Robert Palmer<br>
<b>Subject:</b> Fwd: Automatic reply: [mpich-discuss] MPI_THREAD_MULTIPLE on Microsoft HPC platform<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Folks,<br>
<br>
Is MPI_THREAD_MULTIPLE supported on<br>
Windows Server 2008 R2 HPC 3.1.3267.0 ?<br>
<br>
Specifically MPI_Init_thread( ..., required, provided )<br>
<br>
for required = MPI_THREAD_MULTIPLE<br>
returns<br>
provided = MPI_THREAD_SERIALIZED<br>
<br>
Any plans to include support for MPI_THREAD_MULTIPLE in the future?<br>
<br>
Thank you!<br>
<br>
Kind regards,<br>
Dmitriy.<br>
<br>
<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">---------- Forwarded message ----------<br>
From: <b>Eric Lantz (HPC)</b> <<a href="mailto:elantz@microsoft.com">elantz@microsoft.com</a>><br>
Date: Wed, Mar 30, 2011 at 3:01 PM<br>
Subject: Automatic reply: [mpich-discuss] MPI_THREAD_MULTIPLE on Microsoft HPC platform<br>
To: Dmitriy Golovashkin <<a href="mailto:golovashkin@gmail.com">golovashkin@gmail.com</a>><br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt">
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="FR">Thank you for your message.
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="FR">However, I'm on vacation from Wednesday (Mar29) through Friday (Apr1) - with little or no access to email. Then I'll be attending the OpenFabrics Alliance Workshop
in Monterey, CA from Sunday (Apr3) through Wednesday (Apr6). </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="FR">I'll be back on a normal work schedule starting Thursday (Apr7).
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="FR">
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="FR">For urgent NetworkDirect issues please contact Fab Tillier (<a href="mailto:ftillier@microsoft.com" target="_blank">ftillier@microsoft.com</a>).
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="FR">For urgent MS-MPI or performance issues please contact Robert Palmer (<a href="mailto:robert.palmer@microsoft.com" target="_blank">robert.palmer@microsoft.com</a>).
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">My appologies for any inconvenience,
<br>
Eric<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:8.5pt"> </span><o:p></o:p></p>
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