[R-SIG-Mac] Problems with big objects in R-2.5 x86_64

[Simon de Bernard]

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...

Best,

Simon de Bernard.

Le 23 mai 07 à 19:03, Simon Urbanek a écrit :

> Eric,
>
> 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).
>
> Cheers,
> Simon
>
>
> On May 23, 2007, at 11:15 AM, Eric Blanc wrote:
>
>> 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
>> 	[[alternative HTML version deleted]]
>>
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>>
>
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