[RkWard-devel] [rkward - Help] RE: Large matrices

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By: kapatp

That surely is an issue with R. Try doing the same by starting R from any terminal
(or even on Windows). For some more information try ?Memory. Apart from this,
there is obviously the restriction of physical memory. On my machine with 1
GB of physical ram, and 2 GB of swap, I could go to:

> x = matrix(data=0,1,3*(10^8))
> object.size(x)
2.4e+09

which is an usage of around 2.4 GB. Thus a 27 x 10^7 of 0s is achievable! Of
course, going to 4*(10^8) (ie, nearly 3.125 GB) is physical impossible here.
So, forget about 10^17, unless you have access to clusters / supercomupters.
IMHO, for such large scale usage fall back to C, or try matlab/octave. Again,
total physical mem will always be a restriction.

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