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Thread: Is CL_KERNEL_WORK_GROUP_SIZE value hardware dependent?

  1. #1
    Junior Member
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    Jul 2010
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    Is CL_KERNEL_WORK_GROUP_SIZE value hardware dependent?

    Hi,

    Please let me know if the CL_KERNEL_WORK_GROUP_SIZE value, that we get from clGetDeviceInfo, is the maximum number of processing elements present on a computing device? What is the relation between number of processing elements present on a computing device and the work group size?

    Thanks,
    Ravi

  2. #2
    Junior Member
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    Apr 2010
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    Re: Is CL_KERNEL_WORK_GROUP_SIZE value hardware dependent?

    Yes it is. I usually hate thread redirects, but this thread goes into depth regarding your question almost exactly:
    viewtopic.php?f=37&t=2991

    I believe it comes down to cores and available registers to determine this value.

  3. #3
    Junior Member
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    Re: Is CL_KERNEL_WORK_GROUP_SIZE value hardware dependent?

    This is what I was looking for.. Thank you very much AlexAtOSU!!

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