Sorry for crossposting, I already posted this report to the users list,
but the developers list is probably more relevant.
I have a cluster with two Intel Xeon Nehalem E5520 CPU per server
quad-core, 2.27GHz). The interconnect is 4xQDR Infiniband (Mellanox
ConnectX).
I have compiled and installed
On 13/05/10 20:56, Oskar Enoksson wrote:
> The problem is that I get very bad performance unless I
> explicitly exclude the "sm" btl and I can't figure out why.
Recently someone reported issues which were traced back to
the fact that the files that sm uses for mmap() were in a
/tmp which was NFS
WHAT: Remove all non-hwloc paffinity components.
WHY: The hwloc component supports all those systems.
WHERE: opal/mca/paffinity/[^hwloc|base] directories
WHEN: for 1.5.1
TIMEOUT: Tuesday call, May 25 (yes, about 2 weeks from now -- let hwloc soak
for a while...)
--
WHAT: hwloc is currently embedded in opal/mca/paffinity/hwloc/hwloc -- move it
to be a first class citizen in opal/hwloc.
WHY: Let other portions of the OPAL, ORTE, and OMPI code bases use hwloc
services (remember that hwloc provides detailed topology information, not just
processor binding).
On 14/05/10 10:20, Jeff Squyres wrote:
> That being said, we might as well leave the paffinity
> framework around, even if it only has one component left,
> simply on the argument that someday Open MPI may support
> a platform that hwloc does not.
Sounds good to me.
cheers!
Chris
--
Christoph
