[R-SIG-Mac] Problems with big objects in R-2.5 x86_64
simon.urbanek at r-project.org
Wed May 23 19:56:28 CEST 2007
On May 23, 2007, at 1:19 PM, Simon de Bernard wrote:
> 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...
What you reported was a crash, what he reports is ... I don't know
what ;). And that's why I need more info ...
> 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)
>> 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).
>>> [[alternative HTML version deleted]]
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