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

[Simon Urbanek]

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 ...

Cheers,
Simon


>
> 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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