[GRASSLIST:3183] Re: advice on building a workstation PC for Grass

drew einhorn drew at technteach.com
Thu Apr 15 09:58:45 EDT 2004

Ah, last time I looked closely he was still recommending
single processor boxes.

Even if it's not multithreaded you may be able to manually
split the problem in two.  Instead of running it on one big
region, maybe you can split it into a north half and a south
half.  And r.patch them concurently.

Depends on whether there's a cheap way to combine two regions.
I'm just a beginner so I don't know.

On Thu, 2004-04-15 at 05:21, Philipp Molzer wrote:
> cr.yp.to's site has great advice.   He reccomends going with a dual-cpu. 
> I'm wondering if any of the GRASS components are written to be 
> multi-threaded, to take advantage of such a machine.  For example, my 
> underpowered machine has been r.patch'ing together 8  60MB rasters for 
> the last 5 hours, and is about 50% done.  Would a dual-cpu machine get 
> it done twice as fast?   While it is using 95% of my CPU, it's only 
> using 9% of memory. 
> Phil
> drew einhorn wrote:
> >Over the years I've found the advice at this web page
> >quite useful:
> >
> >http://cr.yp.to/hardware/advice.html
> >
> >I'd probably bump the memory to 1 GB.
> >
> >On Wed, 2004-04-14 at 16:00, Philipp Molzer wrote:
> >  
> >
> >>Hi,
> >>I'd appreciate any advice on building a new PC, with running Grass in 
> >>mind.  I am currently using
> >>AMD Duron Processor
> >>cpu MHz         : 1294.521
> >>RAM : 750 MB
> >>Linux 2.4.20-28.8
> >>The ram seems to be fine, but the CPU frequently max's out on things 
> >>such as v.in.shape, r.patch, etc.
> >>I'd like to stay under $600 for motherboard, CPU, RAM, harddrive, and 
> >>case.  I know I am being quite vague about what sort of data I'm working 
> >>with, but I'm sure that people must have opinions about what a dedicated 
> >>Grass workstation would have in it.
> >>Thanks,
> >>Phil
> >>    
> >>
drew einhorn <drew at technteach.com>
Technology and Teaching

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