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Title	Martin Simon’s research
Description	Martin Simon’s research blog Primary Menu Home Research Teaching About Boosting Intel MKL on AMD Ryzen processors Over the weekend I had the time to test
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Martin Simon’s research blog Primary Menu Home Research Teaching About Boosting Intel MKL on AMD Ryzen processors Over the weekend I had the time to test a workaround which caught quite a bit of attention when it was first published in November 2019 on Reddit under the title “ How to force Matlab to use a fast codepath on AMD Ryzen/TR CPUs “ . Among MATLAB users it was known for a long time that the underlying Intel Math Kernel Library was optimized for Intel processors and notoriously slow on AMD processors, no matter whether the CPU supports efficient SIMD extensions or not. For example the linear algebra libraries BLAS and LAPACK are included in the MKL. This drawback also known as the “cripple AMD” routine exists for more than 10 years and does also affect NumPy as you can see from the Wikipedia Article for the Math Kernel Library : “However, as long as the master function detects a non-Intel CPU, it almost always chooses the most basic (and slowest) function to use, regardless of

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