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AMD AOCC 4.0 Arrives For Squeezing More Performance Out Of Zen 4

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  • #21
    Originally posted by gganesh View Post

    Hi! I work for AMD and in AOCC!
    Can you please let us know what error you are facing and your settings for the compilation. We would like to track this issue down and resolve it.
    Thank you!
    The only warning/error the complete log does show:
    https://paste.cachyos.org/p/884367a.log

    Im on CachyOS(archlinux), Kernel 6.0.9 got compiled
    Config: https://paste.cachyos.org/p/fd6becb.9-2-cachyos-lto
    CPU: 5900X

    Clang 14, 15 and 16 are working correctly on the same source.

    And because the performance of the compiler itself:

    AOCC
    Till the point where the compiler failed to compile the kernel:
    ```
    Executed in 23.25 mins fish external
    usr time 480.67 mins 131.00 micros 480.67 mins
    sys time 23.72 mins 112.00 micros 23.72 mins

    ```

    ​Clang-15 compiled with ThinLTO, PGO and optimized with BOLT Source:https://mirror.cachyos.org/llvm-bolt-15.tar.zst
    I stopped the compilation at the point where AOCC failed:
    ```
    __________________________________________________ ______
    Executed in 594.25 secs fish external
    usr time 180.36 mins 200.00 micros 180.36 mins
    sys time 19.06 mins 90.00 micros 19.06 mins


    ​```

    How it can be that a compiler is that much slower?

    Regards

    Peter Jung

    Last edited by ptr1337; 20 November 2022, 05:05 PM.

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    • #22
      Originally posted by ptr1337 View Post
      The only warning/error the complete log does show:
      https://paste.cachyos.org/p/884367a.log

      Im on CachyOS(archlinux), Kernel 6.0.9 got compiled
      Config: https://paste.cachyos.org/p/fd6becb.9-2-cachyos-lto
      CPU: 5900X
      Thank you! We didn't have much to offer with ThinLTO. We have root caused the issue. We are trying to resolving it and also checking\reducing the compilation time!
      Will keep you posted!


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