Hyperthreading recommended?

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Thomas Freedman
Thomas Freedman
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10 Mar 2011 3:54:25 UTC
Topic 195699
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    I have Dual INTEL CPU computers. Each CPU has 4 Hardware cores. One machine is running Windows 7 Pro 64 bit, the other Linux Unbuntu 10.10 64 bit. Both machines have 8 GB memory.

    Is hyper-threading recommended? With that set to HT - ON, the machines both run up to 16 projects consecutively. (the Windows machine gets a little choked for memory, and sometimes drops down to 13).

    My general impression is the projects run slower than with HT - off, but not twice as slow, so project productivity is some better with HT - ON. Thoughts?

    transient
    transient
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    Hyperthreading recommended?

    10 Mar 2011 6:41:45 UTC
    Message 104580
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      Maybe this thread will help you in making a decision on the matter.
      http://einsteinathome.org/node/195511&nowrap=true#108579

      Jeroen
      Jeroen
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      I have seen some increase in

      10 Mar 2011 17:08:01 UTC
      Message 104581
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        I have seen some increase in overall daily processing by enabling HT for CPU-only crunching via an i7. However, extra memory is required to cover the additional application processes that will be running at once.

        For GPU crunching, I would suggest not using HT or keeping the CPU load below 50% if HT is enabled in order to maximize production from the GPUs.

        Thomas Freedman
        Thomas Freedman
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        Thanks for the link!

        11 Mar 2011 4:42:12 UTC
        Message 104582 in response to message 104580
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          Thanks for the link! Interesting stuff.

          Thomas Freedman
          Thomas Freedman
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          RE: I have seen some

          11 Mar 2011 4:44:37 UTC
          Message 104583 in response to message 104581
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            Quote:

            I have seen some increase in overall daily processing by enabling HT for CPU-only crunching via an i7. However, extra memory is required to cover the additional application processes that will be running at once.

            For GPU crunching, I would suggest not using HT or keeping the CPU load below 50% if HT is enabled in order to maximize production from the GPUs.

            Thanks, intersting things to play with

            dunx
            dunx
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            I use Process Lasso to force

            12 Mar 2011 8:04:16 UTC
            Message 104584
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              I use Process Lasso to force two GPU's onto 2 threads, and leave six to run GPU tasks.

              dunx

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