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

Your #1 option, if this is your bottleneck, is to re-examine your algorithm. See this question Optimizing MATLAB code for a great example of how choosing a different algorithm reduced runtime by three orders of magnitude.