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Re: [DebianGIS] Grass & SMP?

On Wed, Sep 06, 2006 at 11:53:01PM -0700, Dimos wrote:
> Does SMP i386 machines (with Grass & Debian Sarge)
> utilize all processors or it is preferable to use a
> single processor i386 box to use with Grass GIS?

This is not grass-related, it is kernel-related. 
Of course, 2 processors is better than 1 :) Generally speaking only
properly written multithread programs are able to use both processors
truly. But different forks can anyway work on different cpus: the
true problem is how are efficient both the machine arch and the
OS to switch context and manage concurrency in memory and I/O.
And of course how much are cpu-bounded or I/O bounded the processes

I don't know if someone conducted some seriuous grass-related benchmarks 
on different archs, anyway...

Francesco P. Lovergine

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