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Re: [Condor-users] sharing cpu performance
- Date: Fri, 25 Nov 2011 09:26:05 -0500
- From: Ian Chesal <ichesal@xxxxxxxxxxxxxxxxxx>
- Subject: Re: [Condor-users] sharing cpu performance
On Thursday, 24 November, 2011 at 4:01 AM, D.Yilmaz wrote:
I have 2 processor, quad core system and I see total 8 processors in my system.
I wanted to share the total cpu performance to the 4 condor slot and I put the following two lines in my condor configuration.
SLOT_TYPE_1 = cpus=25%
NUM_SLOTS_TYPE_1 = 4
When I checked the performance of the system with top command I see condor is only using the for 4 cores of the total system other 4 cores looks idle. Could you tell me what's wrong?
Condor doesn't parallelize your underlying work load. If you have 4 slots advertised, on an 8 core machine, but then submit 4 jobs that are all single threaded…you'll only see 4 of the 8 cores in use on the box. Condor can't help you out with that.
Unless you've told Condor to explicitly lock jobs to specific cores, I suspect the problem is you're running single threaded/process work loads via Condor, not multithreaded or multiprocess.
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