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Re: [Condor-users] Intel Core i7 processors?
- Date: Tue, 13 Apr 2010 16:21:16 -0400
- From: Ian Chesal <ian.chesal@xxxxxxxxx>
- Subject: Re: [Condor-users] Intel Core i7 processors?
On Tue, Apr 13, 2010 at 3:59 PM, Erik Paulson <epaulson@xxxxxxxxxxxx>
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.
To add to this: we use Condor as the base for compute grid at Altera and it's on this platform that we do all our performance analysis. Condor adds very little overhead, it shows up largely as wall clock noise in our runs. About +/- 2% in our runs is just system noise (Condor, inter-job load, network latencies, etc.). If we measure clock cycles we can't tell if the job is running under Condor's control or stand alone -- cycle times line up very well.
We run in the vanilla universe. Our jobs have been run this way on a variety of hardware over the years, variety of OSes.