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Re: Increasing EASI processing performance?

Hi,

Also putting the input and output files on physically separate hard disks may increase the speed tens of percents. (Buying two fast hard disks can help a little, too.) In addition, I'd increase PC's memory as much as feasible to the nowadays quite normal 4GB, for example. In the old days, we used a RAMDISK, which I think did increase the speed 100 times or so, because no hard disk accesses were needed during the processing. But, I don't know, if this can be done or is needed at all nowadays in addition just simply to increasing the core memory size.

Best regards,
Teemu Tares
Envia Oy
wwww.envia.fi


Quoting SÃren Hese <soeren.hese@xxxxxxxxxxx>:

Hi Jonas, if your PC is dual or quad core you should split the script
into multiple parts. Processing 50% of the MODIS tiles in one dir. and
50% in another dir.. Also using two different HDiscs is useful for
these two routines than. That will utilise the multi-core character of
your system much better. Geomatica is not scaling its CPU-load to
multiple CPUs so this might increase your processing speed.

Regards

SÃren Hese
Friedrich-Schiller-University Jena
Germany




Jonas Ardà wrote:
Dear list

I am running 10.1.3 using a decent PC with XP, currently processing some 2800 MODIS tiles (each 2400x2400) using an simple EASI script (including FIMPORT, MODEL on and MOSAIC as main features). This takes around 48 hours (estimated time, process not ready yet) and I probably have to run it several times and for larger areas further on.

How do I speed this up?

I can increase priority of the EASI process in Task Manager/Processes but this hardy help as the main functions taking power are called upon during each iteration and hence are FIMPORT, MOSAIC etc. restarted during each iteration (for each MODIS tile).

Migrate to LINUX for better utilization of resources? Any recommendations on this?


Cheers

/Jonas ArdÃ
Lund University, Sweden