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<DIV dir=ltr align=left><SPAN class=292341418-15032007><FONT face=Arial
color=#0000ff size=2>Also see Sec 6.3 of the MPICH Users Guide. <A
href="http://www-unix.mcs.anl.gov/mpi/mpich1/docs/mpichman-chp4.pdf">http://www-unix.mcs.anl.gov/mpi/mpich1/docs/mpichman-chp4.pdf</A></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=292341418-15032007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=292341418-15032007><FONT face=Arial
color=#0000ff size=2>Rajeev</FONT></SPAN></DIV><FONT
style="BACKGROUND-COLOR: #ffffff" face=Arial color=#0000ff size=2></FONT><BR>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
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<FONT face=Tahoma size=2><B>From:</B> owner-mpich-discuss@mcs.anl.gov
[mailto:owner-mpich-discuss@mcs.anl.gov] <B>On Behalf Of </B>Natarajan,
Senthil<BR><B>Sent:</B> Thursday, March 15, 2007 10:48 AM<BR><B>To:</B>
mpich-discuss@mcs.anl.gov; ashton@mcs.anl.gov<BR><B>Subject:</B> [MPICH] MPICH
Connection Problem<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am using MPICH1.2.4 on Linux. I
installed with the option -rsh=ssh.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">After successfully installed, I am
trying to run a simple mpi job with the two
machines.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have generated the key pair
(ssh-keygen) and copied to other machine, and I can ssh between the machines
with out password.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am trying to run a simple mpi
job, but it with out trying to connect other machine, complains about
connection refused.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">mpirun -v -np 2
-machinefile machines tspRunOneBranch
randomOut10.txt<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">running
/home/condor-nobody/teststuff/tspRunOneBranch on 2 LINUX ch_p4
processors<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Created
/home/condor-nobody/teststuff/PI24892<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">connect to
address xxx.xx.xxx.95: Connection refused<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Trying krb4
rsh...<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">connect to
address xxx.xx.xxx.95: Connection refused<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">trying normal
rsh (/usr/bin/rsh)<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">machine2:
Connection refused<o:p></o:p></SPAN></FONT></B></P>
<P class=MsoNormal><B><FONT face=Arial size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">p0_24976:
p4_error: Timeout in making connection to remote process on machine2:
0</SPAN></FONT></B><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Could you please any one let me
know or point out the link, what is happening once we execute mpirun
command.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I though it will connect to other
machine through ssh, but it is not making any communication at all to other
machine. I don’t know what it is doing and how to
debug.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Could you please let me know, how
to run simple mpirun job through ssh.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Senthil<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>