5b708e5eb1
The current gemm threading code can make very unfortunate choices, for example on my 10 core system a 1024x1024x1024 matrix multiply ends up chunking into blocks of 102... which is not a vector friendly size and performance ends up horrible. this patch adds a helper define where an architecture can specify a preference for size multiples. This is different from existing defines that are minimum sizes and such. The performance increase with this patch for the 1024x1024x1024 sgemm is 2.3x (!!) |
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