Re: [Condor-users] Intel Core i7 processors?

[Erik Paulson <epaulson@xxxxxxxxxxxx>]

Is your benchmark:

A) The same program as your Condor job
B) Operating on the realistic data, ideally actual data?

There should be virtually no difference between running a program
through Condor on a machine and logging into that machine and running
it by hand. Anything other than that may or may not be a useful
predictor of performance.

-Erik

On Tue, Apr 13, 2010 at 11:46 AM, Chris Freemesser
<chris@xxxxxxxxxxxxxxxxx> wrote:
> Hi all.
>
> Sorry if this has been asked before...I just joined the list.
>
> We have an older cluster with our nodes running Condor 6.8.4 under Windows
> XP Pro x64.  Hardware consists of a number of machines with two dual-core
> AMD Opteron processors and 4GB of RAM.  System has worked fine for years.
>
> I tried upgrading one of our node machines with a new motherboard (Asus
> P7F-X), an Intel Core i7-860 quad-core processor, and 8GB of RAM.  Same
> version of Windows, same version of Condor.  New system came online fine,
> and accepted jobs fine.
>
> The issue is that running benchmarks on the old and new machines, the i7
> machine should be more than twice as fast as the old machine.  However,
> Condor jobs only run about 20% faster, and I can't figure out why.
>
> I'm just curious if anybody else is using Core i7 processors, and whether or
> not they just don't work well in this type of environment.
>
> Thanks,
>
> Chris
>
> _____________________________________________
> Chris Freemesser, University of Rochester
> Department of Brain & Cognitive Sciences /
> Center for Visual Science
> Meliora Hall, Room 244
> E-Mail: chris@xxxxxxxxxxxxxxxxx
> Phone:  (585)275-0786
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