[R] readBin fails to read large files

[Geier, Florian]

Hi Jim,

yes - it definitely is  64 bit. I call it with r64 and

.Platform$r_arch
[1] "x86_64"

It is on a apple snow leopard (10.6.8) with 16 GB of Ram - not windows

Florian


On 1 Sep 2011, at 16:22, jim holtman wrote:

> Are you running a 64-bit version of R?  It sounds like your operating
> system is not giving you enough memory.  It looks like this is not
> under Windows in a native mode.
> 
> On Thu, Sep 1, 2011 at 11:13 AM, Benton, Paul
> <hpaul.benton08 at imperial.ac.uk> wrote:
>> Posting for a friend
>> 
>> Begin forwarded message:
>> 
>> From: "Geier, Florian" <florian.geier08 at imperial.ac.uk<mailto:florian.geier08 at imperial.ac.uk>>
>> Subject: Fwd: readBin fails to read large files
>> Date: September 1, 2011 4:10:53 PM GMT+01:00
>> To:
>> 
>> 
>> 
>> Begin forwarded message:
>> 
>> Date: 1 September 2011 16:01:45 GMT+01:00
>> Subject: readBin fails to read large files
>> 
>> Dear all,
>> 
>> I am trying to read a large file (~2GB) of unsigned ints into R. Using the command:
>> 
>> raw<-readBin("file",n=10^8, integer(),endian="little",signed=FALSE)
>> 
>> It works fine for n=10^8, but fails for n=10^9 (or even at n=6*10^8). My machine$sizeof.long is 8 bit.
>> I am running R 2.13.1 on a x86_64-apple-darwin9.8.0/x86_64 (64-bit) architecture.
>> 
>> Thanks for your help
>> 
>> Florian
>> 
>> --
>> AXA doctoral fellow
>> Bundy lab - Biomolecular Medicine
>> Imperial College London
>> 
>> 
>> 
>> 
>> 
>> --
>> AXA doctoral fellow
>> Bundy lab - Biomolecular Medicine
>> Imperial College London
>> 
>> 
>> 
>> 
>> 
>> 
>>        [[alternative HTML version deleted]]
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>> 
> 
> 
> 
> -- 
> Jim Holtman
> Data Munger Guru
> 
> What is the problem that you are trying to solve?
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

--
AXA doctoral fellow
Bundy lab - Biomolecular Medicine
Imperial College London