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<DIV dir=ltr align=left><SPAN class=078120103-18122008><FONT face=Arial
color=#0000ff size=2>You can use the --mpd option to mpdboot to specify the path
to mpd on the remote machine. See mpdboot --help.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=078120103-18122008><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=078120103-18122008><FONT face=Arial
color=#0000ff size=2>Rajeev</FONT></SPAN></DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
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<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> mpich-discuss-bounces@mcs.anl.gov
[mailto:mpich-discuss-bounces@mcs.anl.gov] <B>On Behalf Of </B>Paul
Hart<BR><B>Sent:</B> Wednesday, December 17, 2008 5:11 PM<BR><B>To:</B>
mpich-discuss@mcs.anl.gov<BR><B>Subject:</B> [mpich-discuss] Using Different
Versions of MPICH2<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal>Can different versions of MPICH2 (e.g., 2-1.0.8 on one PC
and 2-1.0.7 on another PC) when establishing a computing ring?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>I have this situation and am experiencing the following
error when trying to start the ring using mpdboot. I believe it may be that
MPICH2 is looking for the mpd.py file on the Xeon host but cannot find it
since it the Xeon host has MPICH 2-1.0.7 installed in the directory
/opt/mpich2-1.0.7/mpich2-1.0.7-install and the Precision host has MPICH
2-1.0.8 installed in the directory
/opt/mpich2-1.0.8/mpich2-1.0.8-install.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Am I correct in that one cannot mix MPICH
versions?<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><o:p> </o:p></P>
<P class=MsoNormal>Paul<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Commands below run from Precision host<o:p></o:p></P>
<P class=MsoNormal>$ mpdboot -v -n 2 -f mpd.hosts<o:p></o:p></P>
<P class=MsoNormal>running mpdallexit on Precision<o:p></o:p></P>
<P class=MsoNormal>LAUNCHED mpd on Precision via <o:p></o:p></P>
<P class=MsoNormal>RUNNING: mpd on Precision<o:p></o:p></P>
<P class=MsoNormal>LAUNCHED mpd on Xeon via
Precision<o:p></o:p></P>
<P class=MsoNormal>mpdboot_Precision (handle_mpd_output 406): from mpd on
Xeon, invalid port info:<o:p></o:p></P>
<P class=MsoNormal>no_port<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>$ mpdboot -v -d -n 2 -f mpd.hosts<o:p></o:p></P>
<P class=MsoNormal>debug: starting<o:p></o:p></P>
<P class=MsoNormal>running mpdallexit on Precision<o:p></o:p></P>
<P class=MsoNormal>LAUNCHED mpd on Precision via <o:p></o:p></P>
<P class=MsoNormal>debug: launch cmd=
/opt/mpich2-1.0.8/mpich2-1.0.8-install/bin/mpd.py --ncpus=1 -e
-d<o:p></o:p></P>
<P class=MsoNormal>debug: mpd on Precision on port 54943<o:p></o:p></P>
<P class=MsoNormal>RUNNING: mpd on Precision<o:p></o:p></P>
<P class=MsoNormal>debug: info for running mpd: {'ncpus': 1, 'list_port':
54943, 'entry_port': '', 'host': 'Precision', 'entry_host': '', 'ifhn':
''}<o:p></o:p></P>
<P class=MsoNormal>LAUNCHED mpd on Xeon via
Precision<o:p></o:p></P>
<P class=MsoNormal>debug: launch cmd= ssh -x -n -q Xeon
'/opt/mpich2-1.0.8/mpich2-1.0.8-install/bin/mpd.py -h Precision -p
54943 --ncpus=1 -e -d' <o:p></o:p></P>
<P class=MsoNormal>debug: mpd on Xeon on port no_port<o:p></o:p></P>
<P class=MsoNormal>mpdboot_Precision (handle_mpd_output 406): from mpd on
Xeon, invalid port info:<o:p></o:p></P>
<P class=MsoNormal>no_port<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>$ mpdcheck -f mpd.hosts -ssh<o:p></o:p></P>
<P class=MsoNormal>Paul@precision's password: <o:p></o:p></P>
<P class=MsoNormal>Paul@precision's password: <o:p></o:p></P>
<P class=MsoNormal>client on Xeon failed to access the server<o:p></o:p></P>
<P class=MsoNormal>here is the output:<o:p></o:p></P>
<P class=MsoNormal>bash:
/opt/mpich2-1.0.8/mpich2-1.0.8-install/bin/mpdcheck.py: No such file or
directory<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><o:p> </o:p></P></DIV></BLOCKQUOTE></BODY></HTML>