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A Look At How The Linux Performance Has Evolved Since The AMD EPYC Launch

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  • #11
    Originally posted by cyring View Post
    Times kernel compilation is around 30's seconds but when I truly build a kernel with Intel NHM, SNB, SKL processors, it takes 20-30 minutes !
    Answering to my remark:

    Code:
    wget http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.9.tar.gz
    tar -xvf linux-4.9.tar.gz
    cd linux-4.9
    make defconfig
    time (make -s -j12 >/dev/null 2>&1)
    
    real 2m36.120s
    user 26m10.078s
    sys 2m13.517s
    156 seconds with a Gulftown Xeon CPU W3690 @ 3.47GHz - 12 threads

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    • #12
      I'm a bit late to the article, but I'm curious what the configuration for the numpy test was. Is it using MKL or OpenBLAS as a backend? With the newer AMD processors the behavior is very different between the two. MKL is a bit faster, but uses a ridiculous amount of CPUs, like most of the cores at 100%. OpenBLAS is somewhat slower, but way less CPU usage.

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