On Dec 11, 2006, at 2:45 PM, Reese Faucette wrote:
Also I have no idea what the memory window question is, i will
look it up on google.
aon075:~ root# dmesg | grep GM
GM: gm_register_memory will be able to lock 96000 pages (375 MBytes)
This just answered it - there is 375MB available for GM to
register, which
is the IOMMU window size available to the GM driver. This is quite
small,
and it would be very helpful if this could be increased. helpful
== much
better performance for your jobs.
Always a plus
It's possible that OMPI is not managing registered space well, as is
required when the aggregate registered memory needed by a job is
larger than
the memory available to be registered. I do some research locally
into
OMPIs management of registered memory when using GM. If it comes
to it,
would you be willing to run an OMPI with some debug statements in
it for me?
thanks,
Sure i can run them.
-reese
_______________________________________________
users mailing list
us...@open-mpi.org
http://www.open-mpi.org/mailman/listinfo.cgi/users
