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Re: Which fft package does matlab use?
Posted:
Apr 1, 2013 6:46 AM


> GFlopsMM(s) = NIter*2*size(A,1)^3/1e9/t; > GFlopsFFT(s) = NIter*5*N*log2(N)*N/1e9/t2;
So you assume that:
(1) the computer does not use any multithreading during MM or FFT? (2) MATLAB matrix multiplication is O(n^3) (which is not the optimal)? (3) memory access data are negligible (usually not right)?
Bruno



