3. [Discussion] PyTorch favors Intel against AMD's rising?

[Discussion] PyTorch favors Intel against AMD's rising?

Starting with the most important point:

I actually checked if this claim is true that the MKL_DEBUG_CPU_TYPE=5trick doesn't work anymore with MKL 2021.1. I can not confirm this. The trick now has no effect because as my personal testing showed MKL 2020.1 on anaconda now by default has fast performance also on Ryzen CPU. Again:

** Intel MKL 2020.1 has by default fast performance on AMD Ryzen CPU**

So the whole thread is basically wrong/irrelevant as this fiy actually is a good fix!!! Anyone can check this with a basic benchmark (see below).

With previous MKL version for the same basic test used, the flag had a huge effect, like >3x faster performance. How this affects a whole real-world chain I never measured but I agree that it depending on what you do, the effect isn't that big.

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