Hi.
Once you have say 2 GB of RAM per cpu, you probably don't see much
additional benefit unless you are attempting to run several processes
simultaneously on a given cpu.
Currently the only tool which automatically runs things in parallel is FDT
(see the FDT manpage), but there is work ongoing for future release of
other tools.
Disk I/O is not a huge issue on new machines afaik.
There has been a little investigation of compiling specifically for 64-bit
linux, suggesting that it is well worthwhile - so you might want to
recomile FSL from source in that case.
Cheers, Steve.
On Fri, 15 Oct 2004, Antti Korvenoja wrote:
> Dear all,
>
> We are currently preparing spesifications for a new analysis server. We
> would therefore like to here experiences from FSL users and developer
> insights about the hardware requirements.
>
> Spesifically, we are interested in what is the upper range of memory (RAM)
> that in practise has been used. Is there threaded code, so that FSL could
> use directly multiple processors? I do realize that by starting multiple
> simultaneous batch processes one can benefit from SMP. Any opinions about
> the importance of disk I/O bandwidth. How does FSL run on Opteron processor
> (64-bit)?
>
> Yours,
>
> Antti Korvenoja
> --
> Antti Korvenoja
> Biomedicum Helsinki, Radiology
> P.O. Box 700, 00029 HUS
> Finland
>
> tel: +358-9-47171786 : mobile: +358-40-7498469
>
--
Stephen M. Smith DPhil
Associate Director, FMRIB and Analysis Research Coordinator
Oxford University Centre for Functional MRI of the Brain
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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