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GCC vs. Clang Compiler Benchmarks On POWER9 With Raptor's Blackbird

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  • GCC vs. Clang Compiler Benchmarks On POWER9 With Raptor's Blackbird

    Phoronix: GCC vs. Clang Compiler Benchmarks On POWER9 With Raptor's Blackbird

    While for Intel x86_64 with the latest compilers it's a very competitive race between LLVM Clang and GCC, how is that battle playing out on the IBM POWER9 front? Using the interesting Raptor Blackbird with IBM POWER9 4-core / 16-thread CPU, here are some recent benchmarks I did between GCC 9, GCC 10, and LLVM Clang 8.

    Phoronix, Linux Hardware Reviews, Linux hardware benchmarks, Linux server benchmarks, Linux benchmarking, Desktop Linux, Linux performance, Open Source graphics, Linux How To, Ubuntu benchmarks, Ubuntu hardware, Phoronix Test Suite

  • #2
    Michael Comments link in the article not working? https://www.phoronix.com/forums/node/1115363 gives me an unauthorized error, but navigating through the forum works fine.

    Interesting that gcc10 seems to regress in a lot of tests from gcc9.

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    • #3
      Originally posted by squash View Post
      Michael Comments link in the article not working? https://www.phoronix.com/forums/node/1115363 gives me an unauthorized error, but navigating through the forum works fine.

      Interesting that gcc10 seems to regress in a lot of tests from gcc9.
      Should be fixed now, thanks.
      Michael Larabel
      https://www.michaellarabel.com/

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      • #4
        Originally posted by Michael View Post

        Should be fixed now, thanks.
        Just to inform you: I am active between 12PM and 2AM UTC -5, which is why I couldn't approve the post in time.

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        • #5
          Typo:

          Originally posted by phoronix View Post
          In the SciMark 2.0 C micro-benchmarks is one of the cases where LLVM Clang overall wasd outperforming GCC.

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          • #6
            v0.3 and no HIB patchset applied yet......... dav1d results
            4K

            Clang: 9fps
            GCC 9: 9fps
            GCC 10: 9fps
            1080p

            GCC 9: 38.49fps
            GCC 10: 39.15fps
            Clang: 39.97fps

            Still not ready for 4K or 1080p60.

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            • #7
              What I wouldn't do to see a 4C/16T or 4C/32T x86-64 cpu.

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