6-02-2012, 06:29 (-0800); Alaios escriu:
> Actually, I would like to speed up matrix multiplication
>
> which is really too slow.
> MatrixA %*% MatrixB (each one is a [128,128] table) is running four hours
> now... and just imagine that I want to calculate many of those.
It doesn't seem normal to me... in my computer such a multiplication
takes a fraction of a second:
system.time(array(rnorm(128*128), c(128,128)) %*%
array(rnorm(128*128), c(128,128)))
user system elapsed
0.008 0.000 0.006
Am I missing something?
Cheers,
Ernest
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