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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>We just installed v1.3.1 of MPICH2 and are having a problem clustering two nodes together. Both nodes (minserv1 and minserv2) are linked together via a private Gigabit Ethernet, and minserv1 has a local Ethernet connection we use to login to that system.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On ‘minserv1’ we execute:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>[minserv1 ~] $mpdboot --totalnum=2 --ncpus=8 --ifhn=minserv1-gig -f ${HOME}/mpd.hosts<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal s
tyle='te
8216;mpdtrace –l’ shows both servers communicating using their gigabit interfaces.<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'>We then try to execute:<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>[minserv1 ~]$ mpiexec -np 16 -machinefile ./mf hostname<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'>Where the machine file ‘mf’ contains:<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'>minserv1-gig:8<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'>minserv2-gig:8<o:p></o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-fa
mily:"Co
o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>with the following results:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>minserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>minserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>minserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>minserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>minserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10
.0pt;fon
inserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>minserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>minserv1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>[proxy:0:1@minserv2] HYDU_sock_connect (./utils/sock/sock.c:138): unable to get host address (Success)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'>[proxy:0:1@minserv2] main (./pm/pmiserv/pmip.c:208): unable to connect to server minserv1 at port 55501 (check for firewalls!)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>We&
#8217;re
that ‘minserv2’ appears to be trying to connect to ‘minserv1’ (the using the non-gigabit interface) when we’ve started mpd with the specification to explicitly use that interface?<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>Help and guidance will be sincerely appreciated.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>Thanks very much.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>Mark Beauharnois<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>Atmospheric Sciences Research Center<o:p></o:p></span></p><p class=MsoNormal style='text
-autospa
t-size:10.0pt'>State University of New York at Albany<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>