<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div dir="ltr">Nodes and cores are *hardware* concepts. If you need to add hardware resources to your job, that is a resource manager issue. If you want to create new MPI processes _that will run on those new nodes/cores_, you can use MPI_Comm_spawn for that.<div><br></div><div>As for pausing a job, I'm not sure why you want to do that. Are you trying to suspect the job until the new hardware resources become available?</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 7, 2015 at 10:08 PM, wahi <span dir="ltr"><<a href="mailto:wahi@sci.am" target="_blank">wahi@sci.am</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Hi Jeff,<br>
<br>
Thank you for your reply, I think the MPI_COMM_Spawn is for
generating new processes but I need to add more node or cores after
pausing the job, am I right ?<div><div class="h5"><br>
<br>
<div>On 10/08/2015 08:11 AM, Jeff Hammond
wrote:<br>
</div>
<blockquote type="cite">See MPI_Comm_spawn(_multiple).
<div><br>
</div>
<div>Jeff <span></span><br>
<br>
On Wednesday, October 7, 2015, Zhao, Xin <<a href="mailto:xinzhao3@illinois.edu" target="_blank"></a><a href="mailto:xinzhao3@illinois.edu" target="_blank">xinzhao3@illinois.edu</a>>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Wahi,<br>
<br>
Do you mean you want to change number of hosts during one MPI
execution? If so, we think that is not possible.<br>
<br>
Xin<br>
________________________________________<br>
From: wahi [<a>wahi@sci.am</a>]<br>
Sent: Wednesday, October 07, 2015 2:43 AM<br>
To: <a>discuss@mpich.org</a><br>
Subject: [mpich-discuss] Can the MPICH job pause and resumed<br>
<br>
Hi,<br>
<br>
I would like to know if there is possibility to pause the
MPICH job and<br>
restart it with more node numbers ?<br>
<br>
<br>
<br>
Thanks in advance for any help or suggestion.<br>
<br>
<br>
<br>
<br>
<br>
Regards,<br>
Wahi<br>
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</blockquote>
</div>
<br>
<br>
-- <br>
Jeff Hammond<br>
<a href="mailto:jeff.science@gmail.com" target="_blank">jeff.science@gmail.com</a><br>
<a href="http://jeffhammond.github.io/" target="_blank">http://jeffhammond.github.io/</a><br>
<br>
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<br>
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</blockquote>
<br>
</div></div></div>
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