simultaneous write, same NetCDF file Fortran
Wei-keng Liao
wkliao at ece.northwestern.edu
Fri Apr 20 10:22:39 CDT 2012
Hi, Kris,
In PnetCDF home page, there is a link to a tutorial.
http://trac.mcs.anl.gov/projects/parallel-netcdf/wiki/QuickTutorial
Several example programs can be found there together with some descriptions.
Your case falls into the section of "Real parallel I/O on shared files".
regards
Wei-keng
On Apr 20, 2012, at 8:54 AM, Kristopher Bedka wrote:
> I am very familiar with "ordinary" Unidata NetCDF but I'm new to parallel netcdf and am having trouble finding the example/explanation I need from the web site. I'm processing a large volume of satellite data and I break each orbit into 15 chunks which is distributed to 15 processors. Each processor needs to write back to a netcdf file containing results for the full orbit. I want to allow multiple processes to simultaneously write to the same NetCDF file. Where can I find a simple example showing the additional steps required (beyond ordinary NetCDF file creation) with parallel-netcdf to accomplish my goal?
>
> Thanks in advance for help,
> Kris
> =========================================================
> Kristopher Bedka
> Science Systems & Applications, Inc. @ NASA Langley Research Center
> Climate Science Branch
> 1 Enterprise Parkway, Suite 200
> Hampton, VA 23666
> Phone: (757) 951-1920
> Fax: (757) 951-1902
> Kristopher.m.bedka at nasa.gov
> =========================================================
>
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