Invalids occasionally in CPU tasks.

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AgentB
AgentB
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29 Jul 2016 20:36:13 UTC
Topic 198714
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    Invalid tasks

    Over the last few months about 1 in 500 tasks will not validate, these were

    LATeah0001L_1040.0_0_0.0_13568275_1,244438437,12242223,1461187364,1461404185,Completed marked as invalid,38650.96,38399.85,0.00,Gamma-ray pulsar binary search #1 v1.00x86_64-pc-linux-gnu,
LATeah0001L_1104.0_0_0.0_16172275_0,247122976,12242223,1465455740,1465578374,Completed marked as invalid,36758.14,36515.37,0.00,Gamma-ray pulsar binary search #1 v1.00x86_64-pc-linux-gnu,
LATeah0001L_1104.0_0_0.0_16544500_0,247129553,12242223,1465478137,1465594937,Completed marked as invalid,37660.67,37392.07,0.00,Gamma-ray pulsar binary search #1 v1.00x86_64-pc-linux-gnu,
LATeah0001L_1104.0_0_0.0_19942125_0,247224030,12242223,1465594937,1465801727,Completed marked as invalid,37865.14,37610.20,0.00,Gamma-ray pulsar binary search #1 v1.00x86_64-pc-linux-gnu,
LATeah0001L_1296.0_0_0.0_14256375_1,249368435,12242223,1468137750,1468404826,Completed marked as invalid,38263.04,38049.36,0.00,Gamma-ray pulsar binary search #1 v1.00x86_64-pc-linux-gnu,
LATeah0001L_1392.0_0_0.0_39349100_0,250628668,12242223,1469418956,1469686886,Completed marked as invalid,37765.24,37072.87,0.00,Gamma-ray pulsar binary search #1 v1.00x86_64-pc-linux-gnu,

    A similar error rate occurred on the OAS tasks.

    This seems about average for the application, see status page

    It's not a major problem, just curious.

    Mumak
    Joined: 26 Feb 13
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    Invalids occasionally in CPU tasks.

    31 Jul 2016 12:13:15 UTC
    Message 140449
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      Such invalid rate seems too low to consider a faulty memory module.
      Anyway, I had similar issues in the past (of higher rate) and found it was caused by such a module.
      My advice in such case is not to use the Windows built-in memory test (which didn't find anything for me), but MemTest86+: http://www.memtest.org
      Easiest is to use the "Auto-installer for USB key"

      EDIT: Sorry, I just noticed you're on Linux and I posted info for Windows.

      -----

      AgentB
      AgentB
      Joined: 17 Mar 12
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      RE: Such invalid rate seems

      31 Jul 2016 14:45:43 UTC
      Message 140450 in response to message 140449
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        Quote:
        Such invalid rate seems too low to consider a faulty memory module.
        Anyway, I had similar issues in the past (of higher rate) and found it was caused by such a module.

        thanks Mumak, it is running 8 x KVR16R11D8/8HB 8GB 1600 MHz DDR3 ECC and i haven't seen an ECC error logged (yet)

        Quote:

        EDIT: Sorry, I just noticed you're on Linux and I posted info for Windows.

        ok, i could boot an iso image easily or run some other tests.

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