CUDA gives low gpu usage

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Grutte Pier [Wa Oars]~MAB The Frisian
Grutte Pier [Wa...
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27 Dec 2010 5:55:02 UTC
Topic 195538
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    I thought I'd use my GTX460SC and -FTW to crunch some E@H WU's but the gpu-usage shows around 12% while crunching PG it shows 99%.
    Besides E@H/PG LCis running too and when I stop that usage goed to 40% which is still way too low.
    So at the moment, till I know the problem/solution, back to PG again.

    Jeroen
    Jeroen
    Joined: 25 Nov 05
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    CUDA gives low gpu usage

    27 Dec 2010 7:05:44 UTC
    Message 101542
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      Quote:
      I thought I'd use my GTX460SC and -FTW to crunch some E@H WU's but the gpu-usage shows around 12% while crunching PG it shows 99%.
      Besides E@H/PG LCis running too and when I stop that usage goed to 40% which is still way too low.
      So at the moment, till I know the problem/solution, back to PG again.

      Try setting BOINC to use one less core than the total available. So if you have four processors, set 75% for available CPU processors. This has worked to increase GPU usage as high as 75% on both of my systems. You can also use Process Lasso to automatically set CPU priority for einsteinbinary_BRP3_1.04_windows_intelx86__BRP3cuda32.exe to above normal or high.

      Grutte Pier [Wa Oars]~MAB The Frisian
      Grutte Pier [Wa...
      Joined: 18 Jan 10
      Posts: 47
      Credit: 1640778
      RAC: 0

      RE: RE: I thought I'd use

      27 Dec 2010 7:12:00 UTC
      Message 101543 in response to message 101542
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        Quote:
        Quote:
        I thought I'd use my GTX460SC and -FTW to crunch some E@H WU's but the gpu-usage shows around 12% while crunching PG it shows 99%.
        Besides E@H/PG LCsis running too and when I stop that usage goes to 40% which is still way too low.
        So at the moment, till I know the problem/solution, back to PG again.

        Try setting BOINC to use one less core than the total available. So if you have four processors, set 75% for available CPU processors. This has worked to increase GPU usage as high as 75% on both of my systems. You can also use Process Lasso to automatically set CPU priority for einsteinbinary_BRP3_1.04_windows_intelx86__BRP3cuda32.exe to above normal or high.


        But Boincmanager shows only .2 cpu + 1 nvidia gpu but wil try it.

        75% of procs
        75% of cpu time

        And doesn't that mean I have one core less to crunch LC ? To me it does.
        And isn't PL for cpu only and not gpu, so back to PG.

        Grutte Pier [Wa Oars]~MAB The Frisian
        Grutte Pier [Wa...
        Joined: 18 Jan 10
        Posts: 47
        Credit: 1640778
        RAC: 0

        Missed this one so as far as

        27 Dec 2010 10:33:29 UTC
        Message 101544
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          Missed this one so as far as I'm concerned this one can be closed.

          http://einsteinathome.org/node/195515

          Rechenkuenstler
          Rechenkuenstler
          Joined: 22 Aug 10
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          RE: RE: RE: I thought

          27 Dec 2010 13:48:34 UTC
          Message 101545 in response to message 101543
          (moderation:
            )

            Quote:
            Quote:
            Quote:
            I thought I'd use my GTX460SC and -FTW to crunch some E@H WU's but the gpu-usage shows around 12% while crunching PG it shows 99%.
            Besides E@H/PG LCsis running too and when I stop that usage goes to 40% which is still way too low.
            So at the moment, till I know the problem/solution, back to PG again.

            Try setting BOINC to use one less core than the total available. So if you have four processors, set 75% for available CPU processors. This has worked to increase GPU usage as high as 75% on both of my systems. You can also use Process Lasso to automatically set CPU priority for einsteinbinary_BRP3_1.04_windows_intelx86__BRP3cuda32.exe to above normal or high.


            But Boincmanager shows only .2 cpu + 1 nvidia gpu but wil try it.

            75% of procs
            75% of cpu time

            And doesn't that mean I have one core less to crunch LC ? To me it does.
            And isn't PL for cpu only and not gpu, so back to PG.

            This 1 core crunches 1 GW task in 5 - 6 hours with a credit of 251. In the same time you can crunch 5 - 6 BRP CUDA units with a credit of 2500 to 3000. So, what is mor effective?

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