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 ncsim slower on newer faster hardware.  

Last post Thu, Jan 31 2013 2:36 PM by Schooler. 2 replies.
Started by Schooler 31 Jan 2013 09:56 AM. Topic has 2 replies and 520 views
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  • Thu, Jan 31 2013 9:56 AM

    • Schooler
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    • Joined on Thu, Jan 31 2013
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    • Points 25
    ncsim slower on newer faster hardware. Reply

    So I've ran into a problem and I wasn't sure where to put this. 

    We are running CentOS 5.8 (I've tryed other versions the timing is the same) and Ncsim version ius11.10.015.setup. When running it on a Lenovo S20 (Model MT-M4105-03U) with a Intel Xeon Processor W3550 (8M Cache, 3.06 GHz, Bus Speed 4.80 GT/s QPI) a particular simulation takes 4 hours and 21 minutes. When running it on a Lenovo S30 (Model MT-M0568-51) with a Intel Xeon Processor E5-1620 (10M Cache, 3.60 GHz, Bus Speed 5GT/s DMI) the same simulation takes 5 hours and 22 minutes. 

    Could it be that the version of ncsim we are running doesn't work well with the newer chipsets? Any other ideas? 

     

    Thanks,
    Signed the hardware guy who got stuck figuring this one out.
    Joe 

     

    • Post Points: 20
  • Thu, Jan 31 2013 1:39 PM

    • tpylant
    • Top 50 Contributor
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    • Austin, TX
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    Re: ncsim slower on newer faster hardware. Reply

    Memory is as important if not more important than processor speed. I noticed that the cache is bigger, which is good. Is the main memory the same or more? I assume it is but I wanted to confirm.

    Assuming the memory is not the issue, I don't know why you would see this behavior.

    Tim 

    • Post Points: 20
  • Thu, Jan 31 2013 2:36 PM

    • Schooler
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    • Joined on Thu, Jan 31 2013
    • Posts 2
    • Points 25
    Re: ncsim slower on newer faster hardware. Reply
    Yeah, I even tested that a couple of different ways with no change in the results, and checked the specs to make sure it was in the optimal slots. They are both decked out with a total 24GB DDR3 Desktop SDRAM (1333MHz PC3-10600)
    • Post Points: 5
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Started by Schooler at 31 Jan 2013 09:56 AM. Topic has 2 replies.