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16394,16384
2012 Feb 07
1
using mclapply (multi core apply) to do matrix multiplication
Dear all,
I am trying to multiply three different matrices and each matrice is of size 16384,16384 the normal %*% multiplciation operator has not finished one day now. As I am running a system with many cores (and it seems that R is using only one of those) I would like to write fast a brief function that converts the typical for loops of a matrix multiplication to a set of lapply sets (mc...