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ARM Cortex-A15 Exynos5 Compiler Benchmarks

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  • ARM Cortex-A15 Exynos5 Compiler Benchmarks

    Phoronix: ARM Cortex-A15 Exynos5 Compiler Benchmarks

    Due to there being much interest in the ARM Cortex A15 benchmarks on Linux, namely with the Samsung Chromebook and its Samsung Exynos 5 Dual, here's a weekend special providing some GCC compiler benchmarks of this new ARM chip.

    http://www.phoronix.com/vr.php?view=18181

  • #2
    Please consider adding "-mfpu=neon -marm -mtune=cortex-a15" to compile flags when running tests:
    • -mfpu=neon will enable use of NEON SIMD unit (similar to SSE on x86). Ubuntu defaults don't have NEON enabled to support Tegra2 that lacks it, which also results in only half float registers being available.
    • -marm will generate ARM code instead of Thumb2, which may result in better performance
    • -mtune=cortex-a15 will, well, tune code for A15

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    • #3
      Very impressive test!

      This kind of diagram is quite useful for mastering the whole performance of A15.
      http://openbenchmarking.org/result/1...SU-1211246RA29

      I suggest running test on Ubuntu 12.10 with E-450 and Atom D525. Same OS version, nearly same cpu frequency, and that will tell us a real story about what is happening on mobile markets.

      PS, 12.10 had improved ARM performance .

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      • #4
        Thanks for that link. Weird how the A15 appears to have double the memory speed - DDR3-2133 is not likely to be soldered in there (E-450 supports max 1066).

        Too bad we can't tell from ob whether the e-450 had even worse memory installed than 1066.

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        • #5
          Originally posted by Tempestglen View Post
          This kind of diagram is quite useful for mastering the whole performance of A15.
          http://openbenchmarking.org/result/1...SU-1211246RA29

          I suggest running test on Ubuntu 12.10 with E-450 and Atom D525. Same OS version, nearly same cpu frequency, and that will tell us a real story about what is happening on mobile markets.
          I was also missing to see an Intel chip as reference. Just to see where in the overall picture the A-15 has its place.

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          • #6
            This is the first time google chooses chrome18.0 as nexus 10 stock browser.

            However,the sun spider JavaScript test indicated that chrome 18.0.1025464 only provides 50% speed of exynos5250 (chrome 23.x)on chromebook XE303,that is 1380ms vs 690ms.

            I am very curious about Ubuntu 12.04/12.10 chrome performance on exynos5250, and I'll appreciate your sun spider test a lot if score picture provided.
            Last edited by Tempestglen; 11-26-2012, 12:56 AM.

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