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Hi Jeff,<br>
<br>
Yes I want to pause the job to have more resources available, so
maybe I need to think about SLURM as a scheduler.<br>
<br>
<br>
<div class="moz-cite-prefix">On 10/08/2015 05:18 PM, Jeff Hammond
wrote:<br>
</div>
<blockquote cite="mid:CAGKz=uLEXUPvQttzzpgSgP=FV4hAiLSapTXo5EsAFTjmOmaKSA@mail.gmail.com" type="cite">
<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 moz-do-not-send="true" 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 moz-do-not-send="true" href="mailto:xinzhao3@illinois.edu" target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:xinzhao3@illinois.edu">xinzhao3@illinois.edu</a></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 moz-do-not-send="true">wahi@sci.am</a>]<br>
Sent: Wednesday, October 07, 2015 2:43 AM<br>
To: <a moz-do-not-send="true">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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-- <br>
<div class="gmail_signature">Jeff Hammond<br>
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