LLVM Clang 16 vs. GCC 13 Compiler Performance On AMD 4th Gen EPYC "Genoa"

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  • skeevy420
    Senior Member
    • May 2017
    • 8529
    #11
    Originally posted by rene View Post
    So cool this Linux distribution now has a clang by default as sys-cc and clang lot the linux kernel on other supported architectures, ... https://www.youtube.com/watch?v=nLyUhEMwGws !
    Record BREAKING #RISC #CISC #Linux #t2sde #release #t2sde #Ad: laptops & more @Amazon: https://services.exactcode.de/amzn.cg... You can support my work at: https://patreon.com/renerebe https://github.com/sponsors/rxrbln/ http://onlyfans.com/renerebe https://exactcode.com https://t2sde.org https://rene.rebe.de​

    Hmm, one of those is not like the rest
    Last edited by skeevy420; 31 May 2023, 12:30 PM.

    Comment

    • hubicka
      Senior Member
      • Aug 2012
      • 173
      #12
      Main most of geomean difference is due to the two oneDNN benchmarks
      LLVM Clang 16 vs. GCC 13 Compiler Performance On AMD 4th Gen EPYC "Genoa" - Phoronix
      https://www.phoronix.com/review/amd-znver4-gcc13-clang16/5
      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


      I perfed it on zen4 and it is a jitter based benchmark. Most time is spent by jit produced code and omp runtime

      Code:
      [FONT=Courier New][COLOR=#000000]5.15% benchdnn libomp.so [.] 0000000000058a◆ [/COLOR]
[COLOR=#18b218]3.38%[/COLOR][COLOR=#000000] benchdnn libomp.so [.] 0x00000000000c▒ [/COLOR]
[COLOR=#18b218]2.69%[/COLOR][COLOR=#000000] benchdnn libm.so.6 [.] __ieee754_logl▒ [/COLOR]
[COLOR=#18b218]1.16%[/COLOR][COLOR=#000000] benchdnn benchdnn [.] rnn::fill_memo▒ [/COLOR]
[COLOR=#18b218]0.90%[/COLOR][COLOR=#000000] benchdnn libdnnl.so.3.1 [.] std::_Function▒ [/COLOR]
[COLOR=#18b218]0.78%[/COLOR][COLOR=#000000] benchdnn libdnnl.so.3.1 [.] std::_Function▒ [/COLOR]
0.41% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
0.38% benchdnn libomp.so [.] 0x00000000000c▒
0.27% benchdnn libdnnl.so.3.1 [.] std::_Function▒
0.24% benchdnn libomp.so [.] 0x00000000000c▒
0.24% benchdnn libdnnl.so.3.1 [.] dnnl_memory_de▒
0.23% benchdnn libm.so.6 [.] __logl ▒
0.23% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
0.19% benchdnn libomp.so [.] 0x00000000000c▒
0.16% benchdnn benchdnn [.] rnn::fill_weig▒
0.16% benchdnn libomp.so [.] 0x000000000008▒
0.14% benchdnn libomp.so [.] 0x000000000008▒
0.12% benchdnn libomp.so [.] 0x00000000000c▒
0.12% benchdnn libomp.so [.] 0x00000000000c▒
0.12% benchdnn libomp.so [.] 0x00000000000c▒
0.12% benchdnn libomp.so [.] 0x00000000000c▒
0.12% benchdnn libomp.so [.] 0x00000000000c▒
0.11% benchdnn libomp.so [.] 0x000000000005▒
0.11% benchdnn libomp.so [.] 0x00000000000c▒
0.10% benchdnn libomp.so [.] 0x000000000005▒
0.10% benchdnn libomp.so [.] 0x00000000000c▒
0.09% benchdnn libomp.so [.] 0x00000000000c▒
0.09% benchdnn libomp.so [.] 0x00000000000c▒
0.07% benchdnn libomp.so [.] 0x00000000000c▒
0.07% benchdnn libomp.so [.] 0x00000000000c▒
0.07% benchdnn libdnnl.so.3.1 [.] std::_Function▒
0.06% benchdnn libomp.so [.] 0x00000000000c▒
0.05% benchdnn libomp.so [.] 0x00000000000c▒
0.05% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
0.05% benchdnn benchdnn [.] dnn_mem_t::set▒
0.05% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
0.05% benchdnn libomp.so [.] 0x00000000000c▒
0.04% benchdnn libomp.so [.] 0x00000000000c▒
0.03% benchdnn libomp.so [.] 0x00000000000c▒
0.03% benchdnn libm.so.6 [.] __logf_fma ▒
0.03% benchdnn libomp.so [.] 0x000000000005▒
0.03% benchdnn libdnnl.so.3.1 [.] std::_Function▒
0.03% benchdnn benchdnn [.] round_to_neare▒
0.02% benchdnn libdnnl.so.3.1 [.] std::_Function▒
0.02% benchdnn libomp.so [.] 0x00000000000c▒
0.02% benchdnn libdnnl.so.3.1 [.] std::_Function▒
0.02% benchdnn libomp.so [.] 0x00000000000c▒
0.02% benchdnn libc.so.6 [.] __sched_yield ▒
0.02% benchdnn libc.so.6 [.] __memset_avx2_▒
0.02% benchdnn libdnnl.so.3.1 [.] std::_Function▒
0.02% benchdnn libomp.so [.] 0x00000000000c▒
0.02% benchdnn libomp.so [.] 0x00000000000c▒
0.02% benchdnn [unknown] [k] 0xffffffffb244▒
0.02% benchdnn [unknown] [k] 0xffffffffb257▒
0.01% benchdnn libdnnl.so.3.1 [.] std::_Function▒[/FONT]
      ​
      So it is not really testing quality of code generation in compiler.

      Comment

      • hubicka
        Senior Member
        • Aug 2012
        • 173
        #13
        Main most of geomean difference is due to the two oneDNN benchmarks. I perfed it on zen4 and it is a jitter based benchmark. Most time is spent by jit produced code and omp runtime:

        5.15% benchdnn libomp.so [.] 0000000000058a◆
        3.38% benchdnn libomp.so [.] 0x00000000000c▒
        2.69% benchdnn libm.so.6 [.] __ieee754_logl▒
        1.16% benchdnn benchdnn [.] rnn::fill_memo▒
        0.90% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.78% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.41% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
        0.38% benchdnn libomp.so [.] 0x00000000000c▒
        0.27% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.24% benchdnn libomp.so [.] 0x00000000000c▒
        0.24% benchdnn libdnnl.so.3.1 [.] dnnl_memory_de▒
        0.23% benchdnn libm.so.6 [.] __logl ▒
        0.23% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
        0.19% benchdnn libomp.so [.] 0x00000000000c▒
        0.16% benchdnn benchdnn [.] rnn::fill_weig▒
        0.16% benchdnn libomp.so [.] 0x000000000008▒
        0.14% benchdnn libomp.so [.] 0x000000000008▒
        0.12% benchdnn libomp.so [.] 0x00000000000c▒
        0.12% benchdnn libomp.so [.] 0x00000000000c▒
        0.12% benchdnn libomp.so [.] 0x00000000000c▒
        0.12% benchdnn libomp.so [.] 0x00000000000c▒
        0.12% benchdnn libomp.so [.] 0x00000000000c▒
        0.11% benchdnn libomp.so [.] 0x000000000005▒
        0.11% benchdnn libomp.so [.] 0x00000000000c▒
        0.10% benchdnn libomp.so [.] 0x000000000005▒
        0.10% benchdnn libomp.so [.] 0x00000000000c▒
        0.09% benchdnn libomp.so [.] 0x00000000000c▒
        0.09% benchdnn libomp.so [.] 0x00000000000c▒
        0.07% benchdnn libomp.so [.] 0x00000000000c▒
        0.07% benchdnn libomp.so [.] 0x00000000000c▒
        0.07% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.06% benchdnn libomp.so [.] 0x00000000000c▒
        0.05% benchdnn libomp.so [.] 0x00000000000c▒
        0.05% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
        0.05% benchdnn benchdnn [.] dnn_mem_t::set▒
        0.05% benchdnn libdnnl.so.3.1 [.] dnnl::impl::cp▒
        0.05% benchdnn libomp.so [.] 0x00000000000c▒
        0.04% benchdnn libomp.so [.] 0x00000000000c▒
        0.03% benchdnn libomp.so [.] 0x00000000000c▒
        0.03% benchdnn libm.so.6 [.] __logf_fma ▒
        0.03% benchdnn libomp.so [.] 0x000000000005▒
        0.03% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.03% benchdnn benchdnn [.] round_to_neare▒
        0.02% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.02% benchdnn libomp.so [.] 0x00000000000c▒
        0.02% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.02% benchdnn libomp.so [.] 0x00000000000c▒
        0.02% benchdnn libc.so.6 [.] __sched_yield ▒
        0.02% benchdnn libc.so.6 [.] __memset_avx2_▒
        0.02% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        0.02% benchdnn libomp.so [.] 0x00000000000c▒
        0.02% benchdnn libomp.so [.] 0x00000000000c▒
        0.02% benchdnn [unknown] [k] 0xffffffffb244▒
        0.02% benchdnn [unknown] [k] 0xffffffffb257▒
        0.01% benchdnn libdnnl.so.3.1 [.] std::_Function▒
        ​

        So it is not really testing quality of code generation in compiler.

        Comment

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