[Beowulf] re: open64 from AMD (was newbie)
csamuel at vpac.org
Wed May 13 00:07:49 PDT 2009
----- "Mark Hahn" <hahn at mcmaster.ca> wrote:
> sorry, but could you decode this 'hiding' thing? spanking?
Ahh, didn't realise it was a UK'ism! :-)
> > what we do is provide multiple
> > compilers and recommend to our users that they test
> > their code themselves.
> yeah, that's what we say as well - I'm guessing it doesn't
> work any better for you as for us ;)
We've not had any problems, ours have been very happy
to report results back to us, they feel involved in
how we run the systems (which is nice).
> users are lazy, and rightfully so! for most of them,
> HPC is just a tool, and spending part of their lives
> bumming some cycles doesn't make sense. it might be
> different if we didn't provide free, all-you-can-eat
I think we must just be lucky then! :-)
> I still think it's a useful question. even if the answer
> is that different compilers/switches only make 5% difference,
> that's useful to know...
Agreed, and if someone has an answer I'd love to hear
I'd have thought it would be something that could be
automated fairly easily to create a heap of compiled
binaries and submit them into a queuing system to test
> > Not a direct answer I'm afraid, but just wanted to
> > share our experiences (we've got a 600+ registered
> > users at present, but they're not all active at once
> > thankfully).
> we're up to 3300 users, >300 active at any time...
I think HPC outside of Australia tends to operate
on a whole different scale, our biggest cluster here
at VPAC has 760 cores..
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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