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<DIV dir=ltr align=left><SPAN class=000090903-30102009><FONT color=#0000ff
size=2 face=Arial>You need to do the mpdcheck tests with every pair of compute
nodes. Or to isolate the problem, try running on a smaller set of nodes first
and increase it one at a time until it fails.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=000090903-30102009><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=000090903-30102009><FONT color=#0000ff
size=2 face=Arial>Rajeev</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=000090903-30102009></SPAN> </DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> mpich-discuss-bounces@mcs.anl.gov
[mailto:mpich-discuss-bounces@mcs.anl.gov] <B>On Behalf Of </B>Mr. Teo En Ming
(Zhang Enming)<BR><B>Sent:</B> Thursday, October 29, 2009 2:35
PM<BR><B>To:</B> mpich-discuss@mcs.anl.gov<BR><B>Subject:</B> [mpich-discuss]
(mpiexec 392): no msg recvd from mpd when expectingack of
request<BR></FONT><BR></DIV>
<DIV></DIV>Hi,<BR><BR>I have just installed MPICH2 in my Xen-based virtual
machines.<BR><BR>My hardware configuration is as follows:<BR><BR>Processor:
Intel Pentium Dual Core E6300 @ 2.8 GHz<BR>Motherboard: Intel Desktop Board
DQ45CB BIOS 0093<BR>Memory: 4X 2GB Kingston DDR2-800 CL5<BR><BR>My software
configuration is as follows:<BR><BR>Xen Hypervisor / Virtual Machine Monitor
Version: 3.5-unstable<BR>Jeremy Fitzhardinge's pv-ops dom0 kernel:
2.6.31.4<BR>Host Operating System: Fedora Linux 11 x86-64 (SELinux
disabled)<BR>Guest Operating Systems: Fedora Linux 11 x86-64 paravirtualized
(PV) domU guests (SELinux disabled)<BR><BR>I have successfully configured,
built and installed MPICH2 in a F11 PV guest OS master compute node 1 with NFS
server (MPICH2 bin subdirectory exported). The rest of the 5 compute nodes
have access to the MPICH2 binaries by mounting NFS share from node 1. Please
see attached c.txt, m.txt and mi.txt. With Xen virtualization, I have created
6 F11 linux PV guests to simulate 6 HPC compute nodes. The network adapter
(NIC) in each guest OS is virtual. The Xen networking type is bridged. Running
"lspci -v" and lsusb in each guest OS does not show up
anything.<BR><BR>According to Appendix A troubleshooting section of the MPICH2
install guide, I have verified that the 2-node test scenario with "mpdcheck
-s" and "mpdcheck -c" is working. The 2 nodes each acting as server and client
respectively can communicate with each other without problems. Both nodes can
communicate with each other in server and client modes respectively. I have
also tested mpdboot with the 2-node scenario and the ring of mpd is
working.<BR><BR>After the troubleshooting process, I have successfully created
a ring of mpd involving 6 compute nodes. "mpdtrace -l" successfully lists all
the 6 nodes. However, when I want to run a job with mpiexec, it gives me the
following error:<BR><BR>[enming@enming-f11-pv-hpc-node0001 ~]$ mpiexec -n 2
examples/cpi<BR>mpiexec_enming-f11-pv-hpc-node0001 (mpiexec 392): no msg recvd
from mpd when expecting ack of request<BR><BR>I have also tried starting the
mpd ring with the root user but I still encounter the same error
above.<BR><BR>Thank you.<BR><BR>PS. config.log is also attached.<BR
clear=all><BR>-- <BR>Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics)
BEng(Hons)(Mechanical Engineering)<BR>Alma Maters:<BR>(1) Singapore
Polytechnic<BR>(2) National University of Singapore<BR>My blog URL: <A
href="http://teo-en-ming-aka-zhang-enming.blogspot.com">http://teo-en-ming-aka-zhang-enming.blogspot.com</A><BR>My
Youtube videos: <A
href="http://www.youtube.com/user/enmingteo">http://www.youtube.com/user/enmingteo</A><BR>Email:
<A
href="mailto:space.time.universe@gmail.com">space.time.universe@gmail.com</A><BR>MSN:
<A href="mailto:teoenming@hotmail.com">teoenming@hotmail.com</A><BR>Mobile
Phone (SingTel): +65-9648-9798<BR>Mobile Phone (Starhub Prepaid):
+65-8369-2618<BR>Age: 31 (as at 30 Oct 2009)<BR>Height: 1.78 meters<BR>Race:
Chinese<BR>Dialect: Hokkien<BR>Street: Bedok Reservoir Road<BR>Country:
Singapore<BR></BLOCKQUOTE></BODY></HTML>