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<div><span class="517571220-25032009"><font face="Arial" color="#0000ff" size="2">Robert,
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<div><span class="517571220-25032009"><font face="Arial" color="#0000ff" size="2">mpiexec will wrap around and keep opening new processes on the existing hosts in it's network until it reaches the number you specified. If all you've got is one host, then you'll
end up with 16 runnning on that host. It's pretty simple.</font></span></div>
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<div class="OutlookMessageHeader" dir="ltr" align="left"><font face="Tahoma" size="2">-----Original Message-----<br>
<b>From:</b> mpich-discuss-bounces@mcs.anl.gov [mailto:mpich-discuss-bounces@mcs.anl.gov]<b>On Behalf Of
</b>Robertson, Andrew<br>
<b>Sent:</b> Wednesday, March 25, 2009 2:56 PM<br>
<b>To:</b> mpich-discuss@mcs.anl.gov<br>
<b>Subject:</b> [mpich-discuss] MPICH on Single Machine<br>
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<p><font face="Arial" size="2">Folks</font> <br>
<font face="Arial" size="2">I have a program that does not have any shared memory parallelization. Thus even though the 16 processors of my quad socket / quad core machine are on the same motherboard, I need to have mpich2 up and running.
</font></p>
<p><font face="Arial" size="2">I need to get the machine a name so it isnt localhost</font>
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<font face="Arial" size="2">I start an mpd with no host name or node count</font>
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<font face="Arial" size="2">I fire up the job with an mpiexec -n 16</font> </p>
<p><font face="Arial" size="2">Or am I missing something here? Do I need an mpdboot that fires up 16 daemons?</font>
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<p><font face="Arial" size="2">Should I be using gforker?? If so how is that done?</font>
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<font face="Arial" size="2">Thanks</font> <br>
<font face="Arial" size="2">- Andy</font> </p>
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<p><font face="Times New Roman">Andrew Robertson P.E.</font> <br>
<font face="Times New Roman">CFD Analyst</font> <br>
<font face="Times New Roman">GASL Operations</font> <br>
<font face="Times New Roman">Tactical Propulsion and Controls</font> <br>
<font face="Times New Roman">ATK</font> <br>
<font face="Times New Roman">77 Raynor Avenue</font> <br>
<font face="Times New Roman">Ronkokoma NY 11779</font> <br>
<font face="Times New Roman">631-737-6100 Ext 120</font> <br>
<font face="Times New Roman">Fax: 631-588-7023</font> <br>
<a href="file://www.atk.com"><u><font face="Times New Roman" color="#0000ff">www.atk.com</font></u></a>
</p>
<p><font face="Times New Roman">!! Knowledge and Thoroughness Baby !!</font> </p>
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