Re: Parallel NCL

From: <ekin_at_nyahnyahspammersnyahnyah>
Date: Thu Jul 14 2011 - 02:56:44 MDT

I would suggest parallel for loops for independent situations like Monte
Carlo runs. Please see
http://www.mathworks.com/help/toolbox/distcomp/brb2x2l-1.html for more
reference.

>
> Great that somebody is working on a parallel NCL!
>
> A short wish list:
>
> - Parallel addfile that can read distributed datasets from multiple NetCDF
> and stitch them together
> - Slow NCL functions that I use a lot are pdfxy, local_min, local_max and,
> of course, the dim_avg, dim_sum, etc.
> - WRAPIT with OpenMP or something similar would be great.
> - Plotting itself can also be slow for complicated fields on grids larger
> than 1000x1000
>
> Currently the large single datasets are about 2000x2000x200, but growing.
> And I also have problems with several 100 files with 500x500x50 each.
>
> OSs are AIX, Linux, MacOS with a broad range of hardware.
>
> Best regards, Axel
>
>
> ________________________________________
> Von: ncl-talk-bounces@ucar.edu [ncl-talk-bounces@ucar.edu]&quot; im
> Auftrag von &quot;Mary Haley [haley@ucar.edu]
> Gesendet: Dienstag, 12. Juli 2011 23:17
> Bis: ncl-talk@ucar.edu forum
> Betreff: [ncl-talk] Parallel NCL
>
> Dear NCL Users,
>
> A new joint project (ParVis) between NCAR and DOE labs is working on a
> parallel version of NCL! We will be implementing parallel versions of NCL
> built-in functions.
>
> To help guide our effort, we'd like to hear which functions you have found
> either are too slow or take too much memory for the data sets you are
> applying them to. Please also let us know how big the data is and what
> kind of machine you're trying to run on (OS, processor, memory size) for
> those functions.
>
> Another goal is to support mathematical operations on native grids so you
> do not have to convert to lat-lon. Please let us know which
> functions/capabilities you would like to see supported first on native
> grids.
>
> Finally, please let us know about any new functions you would like to see
> implemented. What is your "wish list"?
>
> Send replies to ncl-talk.
>
> For more information, see http://trac.mcs.anl.gov/projects/parvis
>
> Regards,
> ParVis team.
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Received on Thu Jul 14 02:56:35 2011

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