Grib2 geographic subdomain

[Wesley Ebisuzaki]

Pierre,

     I just did a test and cnvgrib was running 4x slower than wgrib2 for
an equivalent
amount of work (compressed grib2 -> uncompressed grib2).     So your
executables
seem a little slow.

          Wesley

Pierre Cassar wrote:
> Wesley Ebisuzaki wrote:
>
>> Pierre,
>>
>>     wgrib2 takes 2 minutes and cnvgrib takes 10-15 minutes?  Sounds
>> like the
>> cnvgrib code/libraries were compiled without optimization flags.
>>
>>             Wesley
>>
>
>
> Wesley,
>
> I used the 'cnvgrib' Linux binary (version 1.1.1) from Gribmaster 5.0,
> I don't know if it's optimized.
>
> I run it on i386 P4 machines with FreeBSD 6 and Linux emulation
> (kldload linux) and I do confirm those times: 10-15 minutes to
> convert, for example, a 260MB gfs global file from GRIB2 to GRIB1.
>
> Possibly such a slowness is due to the linux emulation but currently I
> haven't a Linux machine to perform a comparison test.
>
> Unfortunately I was told that's impossible to have 'cnvgrib' compiled
> under FreeBSD. I'm not a computer programmer so I can't say *why*
> that's impossible.
>
> Thank you and best regards.
>
> Pierre Cassar
>