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Re: [Condor-users] Intel Core i7 processors?
- Date: Wed, 14 Apr 2010 09:03:59 -0400
- From: Ian Chesal <ian.chesal@xxxxxxxxx>
- Subject: Re: [Condor-users] Intel Core i7 processors?
All that means is that GeekBench and your jobs aren't performing the
same operations. So one see's a bigger performance boost from the
Is your application IO bound? CPU bound? Does it perform many network
operations? Is it compiled to take advantage of any particular
hardware feature like advanced media processing instructions or loop
Sent from my iPhone
On 2010-04-14, at 8:47 AM, Chris Freemesser <chris@xxxxxxxxxxxxxxxxx>
On 4/13/10 3:59 PM, Erik Paulson wrote:
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.
I initially benchmarked the two machines using GeekBench. The old
Opteron-based machine scored 3323, the new i7 machine scored 7971.
After I put the new node into service, I had one of my users submit
four identical jobs...two to the new node, two to an old node. The
i7-based machine finished in ~100 hours, the Opteron-based machine
finished in ~120 hours. This is obviously not the result I was
The Core i7 processor has a number of new technologies in it, and my
initial thought was that one of these technologies may be causing
problems. That's why I asked if anybody else is using i7's, just to
see if others are getting similar results.
Chris Freemesser, University of Rochester
Department of Brain & Cognitive Sciences /
Center for Visual Science
Meliora Hall, Room 244
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