[R] R-1.6.0 compiled on 64-bit AIX- memory problem?

Simon M Lin lin00025 at mc.duke.edu
Wed Oct 23 15:26:51 CEST 2002


Is it true that R-1.6.0 compiled under 64-bit is less efficient on using
memory than compiled under 32-bit?

Here are my observations:

1. I have an SGI IRIX box (2Gb RAM) running 32-bit version of R-1.5.0. It
CAN handle a large data set (an 1111000 * 18 array).
2. For the same data set, on an IBM AIX 64-bit box (64GB RAM) with the new
version of R-1.6.0, it gives an out of memory error.

I am not sure if the problem is caused by 32-/64-bit compilation, or other
AIX vs IRIX issues.

Can the AIX problem be solved by compiling R-1.6.0 under 32-bit?



     Simon Lin, M.D.
     Ph: (919) 681-9646 FAX: (919) 681-8028
     Lin00025 (at) mc.duke.edu
     Box 3958, Duke University Medical Center
     Durham, NC 27710

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