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Message 109936 - Posted 28 Jan 2011 13:50:03 UTC

    I've had a couple of strange errors when running BRP cuda work tonight.

    1st wu
    2nd wu
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    Message 109940 - Posted 28 Jan 2011 17:09:56 UTC - in response to Message 109936.

      You know I have to ask, but do you have any screen saver active?
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      Message 109945 - Posted 28 Jan 2011 21:16:15 UTC - in response to Message 109940.

        You know I have to ask, but do you have any screen saver active?


        Hi Jord,

        I use the standard windows one and set it to blank the screen after 10 mins. Same on all machines in the fleet. Other BRP (cuda) tasks seem to have been getting through fine, just these two wierd ones that errored out.
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        Message 109961 - Posted 29 Jan 2011 13:57:30 UTC - in response to Message 109945.

          I think it's safest not to run any screen saver when you run CUDA (or OpenCL, or CAL for that matter), no matter how strong your video card is or how much memory there is on it. A screen saver will at all times interfere with the running of the calculations being done on the GPU.
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          Message 110021 - Posted 30 Jan 2011 20:25:36 UTC - in response to Message 109961.

            A screen saver will at all times interfere with the running of the calculations being done on the GPU.

            Um, no. A blank screen does not interfere with the GPU.

            Your statement is only for screen savers which put demands on the GPU.

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            Message 110025 - Posted 30 Jan 2011 21:49:13 UTC - in response to Message 110021.

              A blank screen does not interfere with the GPU.

              Depends now on what you understand is a screen saver. Is turning the monitor off by the OS power options a screen saver? Is turning the monitor off by the power button a screen saver? How far are you going to nitpick?
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              Message 110029 - Posted 31 Jan 2011 0:20:44 UTC - in response to Message 109961.

                Last modified: 31 Jan 2011 0:21:48 UTC

                After searching, I stand corrected:

                http://forums.nvidia.com/index.php?showtopic=71197

                However, you might have been more specific about this Windows phenomenon.

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                This material is based upon work supported by the National Science Foundation (NSF) under Grants PHY-1104902, PHY-1104617 and PHY-1105572 and by the Max Planck Gesellschaft (MPG). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the investigators and do not necessarily reflect the views of the NSF or the MPG.

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