<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Seems like my previous email was truncated after the table so I’ll repost…<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have a 2x Quad core Intel Nehalem server, and /proc/cpuinfo shows the following processing element mapping (16 virtual processing elements I guess due to Intel’s Hyperthreading architecture):<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Physical ID 0 Physical ID 1<o:p></o:p></p><p class=MsoNormal>Proc Id/Core Id Proc Id/Core Id<o:p></o:p></p><p class=MsoNormal>0/0 4/0<o:p></o:p></p><p class=MsoNormal>1/1
&n
sp; 5/1<o:p></o:p></p><p class=MsoNormal>2/9 6/9<o:p></o:p></p><p class=MsoNormal>3/10 7/10<o:p></o:p></p><p class=MsoNormal>8/0 12/0<o:p></o:p></p><p class=MsoNormal>9/1 13/1<o:p></o:p></p><p class=MsoNormal>10/9 &nb
sp; 
o:p></p><p class=MsoNormal>11/10 15/10<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I would like to run 2 processes on the machine, and insure that each physical CPU runs one process. By default, does Hydra distribute the two processes over the physical CPU’s, or would it run the two processes on processor ID’s 0, and 1 (2 cores on same physical processor)? If that is true, how would I specify a user defined process/core binding in this situation to make sure that the processes are distributed across physical CPU’s? Would I use a binding such as “binding=user:0,4”?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Mark<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Mark Beauharnois<o:p></o:p></p
><p clas
mmer/Analyst<o:p></o:p></p><p class=MsoNormal>Atmospheric Sciences Research Center<o:p></o:p></p><p class=MsoNormal>State University of New York at Albany<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>