On Nov 21, 2007, at 3:39 PM, Andrew Friedley wrote:
If this is what I think it is, try using this MCA parameter:
-mca btl_openib_ib_timeout 20
The user used this option and it allowed the run to complete.
You say its a issue with the fabric ibshowerrors does not show any
problems.
Its topspin (cisco) gear, nic's, switch,cables.
Should I follow up with cisco more?
Brock
If this fixes it -- I don't fully understand what's going on, but it's
an issue in the IB fabrics itself. Someone else might be able to
explain in more detail..
Andrew
Brian Dobbins wrote:
Hi Brock
We have a user whos code keep failing at a similar point in the
code. The errors (below) would make me think its a fabric problem,
but ibcheckerrors is not returning any issues. He is using
openmpi-1.2.0 With OFED on RHEL4,
Strangely enough, I hit this exact problem about half an hour
ago...
what compilers is he using for the code / OpenMPI? I haven't
narrowed
down the cause yet because the system I'm on is a tad, uh,
disheveled,
but it'd be good to find any commonality. I'm using PGI-7.1-2
(pgf77/pgf90) with OpenMPI-1.2.4. The system also happens to be
RHEL 4
(Update 3).
.. Also, the code I'm running is CCSM, and it gave an error message
about being unable to read a file correctly right before my
synchronization. This code has worked on other systems in the past
(non-IB, non-IBRIX), but something as basic as a file write
shouldn't be
adversely affected by such things, hence I'm going to try backing the
compiler down to a 'known-good' one first., since perhaps that's my
problem. I don't suppose you saw any messages of that sort? I did
already try setting the retry count parameter up to 20 (from 7), but
that didn't fix it.
Cheers,
- Brian
Brian Dobbins
Yale University HPC
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
