Re: [R] 32 vs 64 bit

From: Roger D. Peng <rpeng_at_jhsph.edu>
Date: Fri 16 Dec 2005 - 00:14:17 EST

When we first moved to 64 bit I found that certain things were slower. I believe it is because of the increased overhead for memory management.

-roger

Paul Gilbert wrote:
> I ran R on an AMD Athlon 64 with a 32 bit Linux (by accident, I moved
> the hard disk from another machine). Now, after install 64 bit Linux and
> 64 bit R, I am finding some of my R tests are quite a bit slower, I
> think because memory demands cause a lot of swap. Does anyone know if
> extra memory usage would be mainly because of R itself, or is there a
> lot of extra memory demand because of the OS, windowing system, and
> other apps?
>
> Paul Gilbert
>
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-- 
Roger D. Peng  |  http://www.biostat.jhsph.edu/~rpeng/

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Received on Fri Dec 16 00:21:15 2005

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