[R] How Can I Tell if the R Running is 64 bit or 32 bit?

[Tom La Bone]

Well, I am indeed running 64-bit Ubuntu and 64-bit R. Thanks!

Tom



Peter Dalgaard wrote:
> 
> Marc Schwartz wrote:
>> Try:
>>
>> > 8*4
>> [1] 32
>>
>> As per the help page for .Machine:
>>
>>   sizeof.pointer     the number of *bytes* in a C SEXP type.
>>
>> So:
>>
>>   8 bits per byte * 4 bytes = 32 bits
>>
> Also (outside of R) type "uname -a". This should give something like
> 
> Linux viggo 2.6.18.8-0.10-default #1 SMP Wed Jun 4 15:46:34 UTC 2008 
> x86_64 x86_64 x86_64 GNU/Linux
> 
> on a 64-bit system (SUSE in this case)
> 
> but
> 
> Linux turmalin 2.6.22.18-0.2-default #1 SMP 2008-06-09 13:53:20 +0200 
> i686 i686 i386 GNU/Linux
> 
> on 32-bitters
>>
>> :-)
>>
>> HTH,
>>
>> Marc Schwartz
>>
>>
>> on 08/08/2008 03:58 PM milton ruser wrote:
>>> Dear Prof. B.Ripley,
>>>
>>> If :
>>>> .Machine$sizeof.pointer
>>> [1] 4
>>>> 2*2*2*2
>>> [1] 16
>>>
>>> So I am running with 16 bits?
>>>
>>> How can I know the number of bits supported on my machine?
>>>
>>> Kindly,
>>>
>>> miltinho astronauta
>>> brazil
>>>
>>> On 8/8/08, Prof Brian Ripley <ripley at stats.ox.ac.uk> wrote:
>>>> Look at .Machine$sizeof.pointer (in bytes).
>>>>
>>>> On Fri, 8 Aug 2008, Tom La Bone wrote:
>>>>
>>>>
>>>>> I think I installed 64-bit Ubuntu 8.04 and 64-bit R on my computer. I
>>>>> can't
>>>>> seem to find anything that says "this is 64-bit Ubuntu" or "this is 
>>>>> 64-bit
>>>>> R". How do I tell what version of R I am running?
>>>>>
>>>>> Tom
>>
>> ______________________________________________
>> 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.
> 
> 
> -- 
>    O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
>   c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
>  (*) \(*) -- University of Copenhagen   Denmark      Ph:  (+45) 35327918
> ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)              FAX: (+45) 35327907
> 
> ______________________________________________
> 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.
> 
> 

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