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by bee_rider 1485 days ago
For BLAS, it has enough legacy that the vendors just make their own libraries, so it would probably be best to use Intel MKL (which has it's own internal dispatching, but I don't think it uses FMV) if you are targeting Intel, and maybe AMD's branch of BLIS if you are targeting AMD. I believe Eigen comes with it's own version of BLAS built in, but it can be made to link to MKL at least, probably BLIS if you are really stubborn.