<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2658.34">
<TITLE>RE: [MPICH] FW: Mpich2 submission question.</TITLE>
</HEAD>
<BODY>
<P><FONT SIZE=2>Sure,</FONT>
</P>
<P><FONT SIZE=2>This may be specific to the program I'm running, MCNP, but when you run</FONT>
</P>
<P><FONT SIZE=2>mpiexec -n 2 mcnp5</FONT>
</P>
<P><FONT SIZE=2>what you see is that two processes are created on the cluster. The first process accumulates no cpu, the second runs normally. The result is accurate.</FONT></P>
<P><FONT SIZE=2>As you continue to add CPUs nothing changes -- the first process is always "idle". If you specifiy -n 1 however, the first process is "active".</FONT></P>
<P><FONT SIZE=2>Any thoughts?</FONT>
<BR><FONT SIZE=2>Simons </FONT>
</P>
<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Rajeev Thakur [<A HREF="mailto:thakur@mcs.anl.gov">mailto:thakur@mcs.anl.gov</A>] </FONT>
<BR><FONT SIZE=2>Sent: March 7, 2006 5:51 PM</FONT>
<BR><FONT SIZE=2>To: galtons@aecl.ca</FONT>
<BR><FONT SIZE=2>Cc: mpich-discuss@mcs.anl.gov</FONT>
<BR><FONT SIZE=2>Subject: RE: [MPICH] FW: Mpich2 submission question.</FONT>
</P>
<P><FONT SIZE=2>Can you explain what you mean with an example? For example, if you are running the cpi example from the examples directory, with "mpiexec -n 2 cpi"</FONT></P>
<P><FONT SIZE=2>Rajeev </FONT>
</P>
<P><FONT SIZE=2>> From: "Galton, Simon" <galtons@aecl.ca></FONT>
<BR><FONT SIZE=2>> Subject: Mpich2 submission question.</FONT>
<BR><FONT SIZE=2>> Date: Tue, 7 Mar 2006 09:46:02 -0500</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Howdy, folks.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> I've been scouring the mpich2 documentation, and I've read over the </FONT>
<BR><FONT SIZE=2>> source code, and I seem to be missing something, somewhere... :)</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> I notice that when you submit an mpich2 job, the first process </FONT>
<BR><FONT SIZE=2>> accumulates no CPU (unless you submit a 1-cpu job). I expect it's </FONT>
<BR><FONT SIZE=2>> just a control process.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Is there anything I can do to make this an "active" process?</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Simon</FONT>
</P>
<br><br><table bgcolor=white style="color:black"><tr><td><br>CONFIDENTIAL AND PRIVILEGED INFORMATION NOTICE<br>
<br>
This e-mail, and any attachments, may contain information that<br>
is confidential, subject to copyright, or exempt from disclosure.<br>
Any unauthorized review, disclosure, retransmission, <br>
dissemination or other use of or reliance on this information <br>
may be unlawful and is strictly prohibited. <br>
<br>
AVIS D'INFORMATION CONFIDENTIELLE ET PRIVILÉGIÉE<br>
<br>
Le présent courriel, et toute pièce jointe, peut contenir de <br>
l'information qui est confidentielle, régie par les droits <br>
d'auteur, ou interdite de divulgation. Tout examen, <br>
divulgation, retransmission, diffusion ou autres utilisations <br>
non autorisées de l'information ou dépendance non autorisée <br>
envers celle-ci peut être illégale et est strictement interdite.</td></tr></table></BODY>
</HTML>