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Request: Solo CPU tests on multi-core platform

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  • Request: Solo CPU tests on multi-core platform

    Hello.
    It would be more interesting to add some solo CPU tests when benchmarking multi-core-CPUs.
    It is today nearly impossible to see in benchmarks how fast is one core. The majority of cpu tasks are still single core today.

    Here is an example:
    http://www.phoronix.com/scan.php?pag...amd_2010&num=6
    Well we see how well povray renders on 8 cores. But how well it is with 1 thread, 2 threads, 12 threads (more threads than cores)? Are 8 threads ~8x faster than 1 (thus we can see the effectivity of this solution)?

    Another here:
    http://www.phoronix.com/scan.php?pag...rei3_530&num=7
    It would be very interesting to have results for 1,2,4,6,8 threads for each processor. Not necessarily in all tests, but at least some (povray, h264, bzip2). They can surely fit into 1 chart.

    What do you think?

  • #2
    Originally posted by vmicho View Post
    Hello.
    It would be more interesting to add some solo CPU tests when benchmarking multi-core-CPUs.
    It is today nearly impossible to see in benchmarks how fast is one core. The majority of cpu tasks are still single core today.

    Here is an example:
    http://www.phoronix.com/scan.php?pag...amd_2010&num=6
    Well we see how well povray renders on 8 cores. But how well it is with 1 thread, 2 threads, 12 threads (more threads than cores)? Are 8 threads ~8x faster than 1 (thus we can see the effectivity of this solution)?

    Another here:
    http://www.phoronix.com/scan.php?pag...rei3_530&num=7
    It would be very interesting to have results for 1,2,4,6,8 threads for each processor. Not necessarily in all tests, but at least some (povray, h264, bzip2). They can surely fit into 1 chart.

    What do you think?
    There already many tests in PTS that are only single threaded and should give you an indication.

    Comment


    • #3
      I think he is actually asking for a benchmark of the quad core running a multi-thread application with only one thread, with 2 threads, with 4 threads, ...

      This is actually an interesting question, as it is the key to how efficient the multi-core implementation is. Linear speed up, if it's seen, would be a huge display, but I suspect it is going to be markedly less than linear.

      Comment

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