|Re: [eigen] Re: [Blitz-devel] Fork Blitz++?|
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I was not surprised that Eigen is faster -- mostly as it uses SIMD.
But I think for a fairer comparison, you should at least initialize the values in the Blitz++ implementation (working on uninitialized values tends to be slow, if there is a number of NaNs and Infs in the data), and probably also compare how big the difference without SIMD would be (or with just SSE2/3/4, instead of AVX+FMA).
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