[R] Matrix Multiplication using R.

[Roger Koenker]

In the event that these are moderately sparse matrices, you could try Matrix or SparseM.


Roger Koenker
rkoenker at illinois.edu




On Aug 14, 2013, at 10:40 AM, Praveen Surendran wrote:

> Dear all,
> 
> I am exploring ways to perform multiplication of a 90000 x 40000 matrix with it's transpose.
> As expected even a 40000 x 100 %*% 100x40000 didn't work on my desktop... giving the error "Error: cannot allocate vector of length 1600000000"
> 
> However I am trying to run this on one node (64GB RAM; 2.60 GHz processor) of a high performance computing cluster.
> Appreciate if anyone has any comments on whether it's advisable to perform a matrix multiplication of this size using R and also on any better ways to handle this task.
> 
> Kind Regards,
> 
> Praveen.
> 
> 
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> 
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