On Fri, 27 Mar 2009, Bill Moninger wrote:
Hello netcdf-java folks,
Thanks to good help from the netcdf-java staff, I'm now able to read and
generate soundings from RUC files in netCDF, grib, and grib2 format. Its
really nice to be able to use the same code for all three formats.
Unfortunately, I find that, at least as I've implemented it, netcdf-java is
20% to 50% slower than my previous methods (using C).
Bill,
If you use the the grib index file, those are the files with the gbx
suffix that are usually in the same dir as the grib file. You should
delete them all and then regenerate them. The new index file read in
much quicker. Currently, i working on grib performance issues
Robb...
Moreover, it appears that java 1.6 is slower than 1.5 (though I haven't
recompiled the underlying UCAR code in 1.6--only my code).
If folks have any thoughts about how to speed things up, I will be much
obliged to hear them.
-Bill
--
William R. Moninger http://www-frd.fsl.noaa.gov/~moninger/
NOAA / Earth Systems Research Laboratory / Global Systems Division
325 Broadway, R/GSD1 voice: 303-497-6435
Boulder, CO 80305 fax: 303-497-3329
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Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/
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