fast matrix multiplication in Matlab

Question

I need to make a matrix/vector multiplication in Matlab of very large sizes: \"A\" is an 655360 by 5 real-valued matrix that are not necessarily sparse and \"B\" is a 655360

Answer 1

Matlab's raison d'etre is doing matrix computations. I would be fairly surprised if you could significantly outperform its built-in matrix multiplication with hand-crafted tools. First of all, you should make sure your multiplication can actually be performed significantly faster. You could do this by implementing a similar multiplication in C++ with Eigen.