[R] How to increase memory for R on Soliars 10 with 16GB and 64bit R

Prof Brian Ripley ripley at stats.ox.ac.uk
Wed Jul 13 09:03:44 CEST 2005

On Tue, 12 Jul 2005, Dongseok Choi wrote:

>  My machine is SUN Java Workstation 2100 with 2 AMD Opteron CPUs and 16GB RAM.
>  R is compiled as 64bit by using SUN compilers.
>  I trying to fit quantile smoothing on my data and I got an message as below.
>> fit1<-rqss(z1~qss(cbind(x,y),lambda=la1),tau=t1)
> Error in as.matrix.csr(diag(n)) :
cannot allocate memory block of size 2496135168
>  The lengths of vector x and y are both 17664.
>  I tried and found that the same command ran with x[1:16008] and y[1:16008].
>  So, it looks to me a memory related problem, but I'm not sure how I can allocate memory block.
>   I read the command line option but not sure what do to with it.
>   Could you help me on this?

It is trying to allocate a single memory block of size over 2^31-1 bytes. 
R internally uses ints for sizes of vectors and that is a limit (see 
help("Memory-limits") ).  However, it is intended that on 64-bit systems 
that there is a limit here of 8*(2^31-1) but there was a typo.  Please 
change line 1534 of src/main/memory.c to


and re-compile.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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