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PGI 17.4 Compiler Tests vs. GCC 6.3 vs. LLVM Clang 4.0

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  • #1

    PGI 17.4 Compiler Tests vs. GCC 6.3 vs. LLVM Clang 4.0

    Phoronix: PGI 17.4 Compiler Tests vs. GCC 6.3 vs. LLVM Clang 4.0

    When NVIDIA-owned PGI released the PGI 17.4 compiler this week there was interest expressed by some Phoronix readers in seeing comparison benchmarks to GCC and Clang...

    PGI 17.4 Compiler Tests vs. GCC 6.3 vs. LLVM Clang 4.0 - Phoronix
    http://www.phoronix.com/scan.php?page=news_item&px=PGI-17.4-Compiler-Tests
    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
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  • #2
    Are you sure that you enabled OpenMP when using gcc and LLVM to compile the ImageMagick tests? The flags you show do not include -fopenmp. Without that OpenMP compilation will not be enabled, so it is unsurprising that PGI would win, since you did give it an OpenMP enabling flag!

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    • #3
      "l look at some NVIDIA PGI GPGPU benchmarks soon."

      I am looking forward to this! I would love to see some OpenMP offloading with GCC 7.1 and OpenACC comparisons. Some simple coding examples would be interesting. I have not used OpenACC or OpenMP offloading yet so this would be very interesting to learn about.

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