[R-SIG-Mac] Problems with big objects in R-2.5 x86_64
Simon de Bernard
dbernard at noos.fr
Wed May 23 19:19:46 CEST 2007
Based on what Eric says (symptoms and the fact that it works on the
SAME machine under ubuntu), it looks a lot like what I reported on
april the 7th...
Simon de Bernard.
Le 23 mai 07 à 19:03, Simon Urbanek a écrit :
> unless you tell us more precisely what you do and what machine you
> have we can't really help you. If you don't have enough RAM (>4GB) 64-
> bit R won't really help you as it ends up swapping all the time
> anyway (just look at the resource usage).
> On May 23, 2007, at 11:15 AM, Eric Blanc wrote:
>> I encountered problems in using the experimental build R 2.5 for
>> x86_64 architecture. I have downloaded the framework from
>> 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
>> Here is the sessionInfo():
>> R version 2.5.0 Patched (2007-05-02 r41420)
>> attached base packages:
>>  "stats" "graphics" "grDevices" "utils" "datasets"
>>  "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).
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