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test sees 1 of my Dual Xeon CPU 2.0's

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  • test sees 1 of my Dual Xeon CPU 2.0's

    When I run the performance test it only shows one cpu, though I have 2. I have played with preferences but it still only sees and tests one processor. Any suggestions?

  • #2
    Are you running an O/S that supports more than 1 CPU?
    Does your BIOS support more than 1 CPU and is it set correctly.
    Are you sure you have 2 CPUs and not just a dual core CPU? Or a CPU with hyperthreading. As multiple cores and hyperthreading can appear like multiple CPUs in some tools.

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    • #3
      In Task Manager under processors there are 2 processor windows. The OS see the two processors. The software sees one.

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      • #4
        Dual core CPUs and CPU's with hyperthreading can (and do) appear as 2 CPUs in task manager and the O/S.

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        • #5
          Two processors...

          Thanks for the help. When the machine boots it initializes 2 processors. There are 2 processors with 2 heatsinks in the machine. Device manager sees 2 Intel XEON CPU 2.00GHz Processors.

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          • #6
            What model Xeon are they? What version of PerformanceTest are you using? Maybe they are both dual core and one is not working due to BIOS settings or O/S?

            What is being reported in PerformanceTest for, Number of CPUs, Cores per CPU and Hyperthreading capable?

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            • #7
              Update

              They are XEON 2.0GHz. Performance Test is 7.0. ! processor and 1 Core per CPU. Hyperthreading is enabled.

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              • #8
                If hyperthreading is enabled, and you have 2 physical CPUs, then you should have 4 processor windows in task manager not 2. I think one of your CPUs isn't enabled.

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                • #9
                  Hmmm...

                  I think you are right. I turned off Hyperthreading and it shows only one processor. When the computer boots it initializes processor 0 and processor 1 but I seem to get only one processor. I will have to figure out what is going on.
                  This was a donated computer that I am trying to get up and running...just proves there is no such thing as FREE!

                  Thanks
                  Tom

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                  • #10
                    Are you running an O/S that supports more than 1 CPU?

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                    • #11
                      Thanks...

                      I have moved to another pc that has 2 2.4Ghz processors. The software shows 2 CPU's and Task Manager sees 4 (Hyperthreading enabled). So I think there is something wrong with the other machine. I do have an issue now that PT 7.0 shows N/A for L1 Data Cache, L2 Cache Size and L3 Cache. THe processors are Intel Xeon 2.4 GHz processors and they should have at least 512K Cache I believe.

                      Thanks again.

                      Tom

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