Hi,

I encountered problems in using the experimental build R 2.5 for  
x86_64 architecture. I have downloaded the framework from

http://r.research.att.com/R-25-br-quad.tar.gz

I tried to load large objects, (about 2GB each), but it hangs at  
random points, apparently always after the 4GB mark (i.e. while  
loading the 3rd object). I am monitoring the resources usage from  
another terminal window (top), and the R process never completes  
loading the 3rd object, the memory usage stops increasing before  
reaching 6GB, even though the CPU usage by R is 100%. The time  
required to load the 1st and 2nd objects are about 1 minute each,  
while I stopped R after 30 minutes (without completing loading the  
3rd object). I had similar problems last december, when I tried to  
compile R 2.4 from scratch using the instructions in

https://stat.ethz.ch/pipermail/r-sig-mac/2006-November/003384.html

Here is the sessionInfo():

R version 2.5.0 Patched (2007-05-02 r41420)
x86_64-apple-darwin8.9.1

locale:
C

attached base packages:
[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"   
"methods"
[7] "base"

Has anybody tried to use large amounts of memory with R 2.5 x86_64 ?  
I must add that I tried to load the same objects, on the same  
machine, but using Ubuntu 7.4 x86_64, and it works on Ubuntu. It  
seems to be a OS X problem (I am using 10.4.9).

Thanks,
Eric
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