----- "Jeff Squyres" <jsquyres_at_[hidden]> wrote:
Hi Jeff,
> I'm the "primary PLPA" guy that Ralph referred to, and I was on
> vacation last week -- sorry for missing all the chatter.
No worries!
> Based on your mails, it looks like you're out this week -- so little
> will likely occur. I'm at the MPI Forum standards meeting next week,
> so my replies to email will be sporatic.
Not a problem, can quite understand.
> OMPI is pretty much directly calling PLPA to set affinity for
> "processors" 0, 1, 2, 3 (which PLPA translates into Linux virtual
> processor IDs, and then invokes sched_setaffinity with each of those
> IDs).
Cool, so it does indeed sound like something that can be
solved purely inside PLPA. That's good to know!
> Note that the EFAULT errors you're seeing in the output are
> deliberate. [...]
Great, after reading a bit more I got the impression that's
what might be going on, thanks for the confirmation!
> But as to why it's getting EINVAL, that could be wonky.
> We might want to take this to the PLPA list and have you
> run some small, non-MPI examples to ensure that PLPA is
> parsing your /sys tree properly, etc.
Not a problem.
> Ping when you get back from vacation.
I'm back Monday (which is Sunday arvo for you I think).
cheers!
Chris
--
Christopher Samuel - (03) 9925 4751 - Systems Manager
The Victorian Partnership for Advanced Computing
P.O. Box 201, Carlton South, VIC 3053, Australia
VPAC is a not-for-profit Registered Research Agency
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