The code for the Job to Core Binding (aka. thread binding, or CPU
binding) feature was checked into the Grid Engine project cvs. It uses
OpenMPI's Portable Linux Processor Affinity (PLPA) library, and is
topology and NUMA aware.
The presentation from HPC Software Workshop '09:
http://wikis.sun.com
Note that we would also have to modify OMPI to:
1. recognize these environmental variables, and
2. use them to actually set the binding, instead of using OMPI-
internal directives
Not a big deal to do, but not something currently in the system. Since
we launch through our own daemons (somet
On Sep 30, 2008, at 2:51 PM, Rayson Ho wrote:
Restarting this discussion. A new update version of Grid Engine 6.2
will come out early next year [1], and I really hope that we can get
at least the interface defined.
Great!
At the minimum, is it enough for the batch system to tell OpenMPI via
Restarting this discussion. A new update version of Grid Engine 6.2
will come out early next year [1], and I really hope that we can get
at least the interface defined.
At the minimum, is it enough for the batch system to tell OpenMPI via
an env variable which core (or virtual core, in the SMT cas
carto is more intended to be a discovery and provider of topology
information. How various parts of the OMPI code base use that
information is a different issue.
With regards to processor affinity, there are two general ways of
doing it:
1. The resource manager tells us what processors h
Hi Rayson,
I guess this is an issue only for SGE. I believe there is something
called 'carto' framework is being developed to represent the node-socket
relationship in order to address the multicore issue. I think there are
other folks in the team who are actively working on it so they probabl
Hello,
I'm from the Sun Grid Engine (SGE) project (
http://gridengine.sunsource.net ). I am working on processor affinity
support for SGE.
In 2005, we had some discussions on the SGE mailing list with Jeff on
this topic. As quad-core processors are available from AMD and Intel,
and higher core co
