Re: [mpich-discuss] MPI_init very slow with more than 3 nodes
One thing you could try is to install mpich on a non-NFS directory such as /tmp and run a program that is also not on NFS to see if the problem persists. You can build mpich on an NFS directory with --prefix=/tmp/mpich and then do “make install” on each machine. Similarly for the “application”, you can run “/bin/hostname” or something similar. — Pavan On Dec 3, 2013, at 12:06 PM, Antonio J. Peña <[email protected]> wrote:
Yes, it may be a good idea to look into that. Hopefully somebody in this list with NFS knowledge will give you a hint.
Antonio
On 12/03/2013 09:48 AM, Bixente BODO GOMEZ wrote:
I send a extract of tcpdump. It seems that the problem is in the file attribues o locks of nfs. I changed fstab on clients to add these options:
nfsvers=3,rw,bg,noac,rsize=8192,wsize=8192
but nothing has improved.
"Antonio J. Peña" <[email protected]> escribió:
I don't think this is helping. Maybe tcpdump / wireshark captures could be helpful.
Antonio
On 12/02/2013 11:44 AM, Bixente BODO GOMEZ wrote:
The attachment...
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-- Antonio J. Peña Postdoctoral Appointee Mathematics and Computer Science Division Argonne National Laboratory 9700 South Cass Avenue, Bldg. 240, Of. 3148 Argonne, IL 60439-4847 (+1) 630-252-7928 [email protected] www.mcs.anl.gov/~apenya
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Pavan Balaji