Re: Parallel NCL

From: Seifert Axel <Axel.Seifert_at_nyahnyahspammersnyahnyah>
Date: Thu Jul 14 2011 - 02:44:06 MDT

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: []&quot; im Auftrag von &quot;Mary Haley []
Gesendet: Dienstag, 12. Juli 2011 23:17
Bis: 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"?

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Received on Thu Jul 14 02:44:18 2011

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