Re: [R] Does R work in 64 bit on apple G5?

From: David Ruau <David.Ruau_at_rwth-aachen.de>
Date: Thu 24 Mar 2005 - 05:40:17 EST

Thanks,
I was sure the pre-compile version was 32 bit but not if you compile it your self...
It give the same infos when you run gc() or .Machine$sizeof.pointer either on OS X client with a pre-compiled version or on OS X Server with a home compile version.
 > .Machine$sizeof.pointer
[1] 4
 > gc()

          used (Mb) gc trigger (Mb)
Ncells 140949  3.8     350000  9.4
Vcells  52967  0.5     786432  6.0

Did anybody use R with Xgrid?
I am trying but it's not so easy to send the R job to the controller...

David

On Mar 23, 2005, at 18:44, Thomas Lumley wrote:

> On Wed, 23 Mar 2005, David Ruau wrote:
>
>> Hi,
>>
>> I am working with R on 2xG5 1.8Ghz from Apple under 10.3.8
>> The G5 chip is 64 bits but does R run in 64 bit or 32 under OS X?
>> How can know?
>> I think it run in 32 bits... but not sure...
>
> Under the current OS X it runs 32bit. You can tell by looking at
> .Machine$sizeof.pointer
> which is 4.
>
> The next version of OS X is advertised as having full 64bit support so
> this limitation will go away then.
>
> -thomas
>
>



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