Hi,

 

I have installed R (2.0.0) onto a two processor machine running Windows
XP (these two processors have been split into 4 logical processors),
with 4Gb of RAM.  Rather than multi-threading, I wanted to run 2
instances of R on the machine in parallel, which uses two of the logical
processors.  Unfortunately, R seems to be accessing a total of 1Gb of
RAM, not taking advantage of 2 lots of 1Gb.  This has led to memory
problems, with one R process using the RAM, and the other one running
into memory problems.

 

Looking at previous posts on this issue, I have tried using gc(), to
take back unused memory.  This has allowed the two parallel processes to
work, but has not given me access to the other 3Gb.

 

Any help would be much appreciated into how R may run in parallel using
more than 1Gb.

 

Graham

 

Graham Law

Senior Scientist

Epidemiology and Genetics Unit

Department of Health Sciences

University of York

York YO10 5DD UK

(t) +44 (0) 1904 32 1883

(m) +44 (0) 790 500 8828

 

 


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