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gfortran and HIRLAM: Success !
- From: Toon Moene <toon at moene dot indiv dot nluug dot nl>
- To: fortran at gcc dot gnu dot org
- Date: Sun, 04 Dec 2005 11:34:32 +0100
- Subject: gfortran and HIRLAM: Success !
L.S.,
I managed to make a run with a current version of HIRLAM
(see http://hirlam.knmi.nl) on my Athlon 64 based laptop
running AMD64 Debian GNU/Linux, compiled with:
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../trunk/configure --disable-nls --disable-multilib --prefix=/usr/snp --enable-languages=ada,c,c++,objc,fortran,java
Thread model: posix
gcc version 4.2.0 20051201 (experimental)
The run contained the following phases:
1. Interpolating lateral boundary conditions from ECMWF's
(http://www.ecmwf.int) global model to our limited area
domain and grid.
2. Converting the observation data file to a format more
suitable for processing by data assimilation.
3. The actual data assimilation itself, i.e., determining
the "best" average between a previous forecast (called
"first guess" in our jargon) and the observations.
Due to heavy swapping, this took ~15 hours.
4. Postprocessing the new model state (that will be the
initial state for the forecast) to determine non-analysed
fields (like 10 meter wind, 2 meter temperature, etc.)
5. The actual forecast. Because this part was heavily swapping
on my puny 0.5 Gbyte laptop, I had to stop it after having
convinced myself that the forecast was progressing OK and
produced meteorologically sound output. At that moment
it had progressed 2 hours into the 48 hour forecast, using
~12 hours wall clock time.
So, I'd think that gfortran is ready for prime time :-)
Cheers,
--
Toon Moene - e-mail: toon@moene.indiv.nluug.nl - phone: +31 346 214290
Saturnushof 14, 3738 XG Maartensdijk, The Netherlands
A maintainer of GNU Fortran 95: http://gcc.gnu.org/fortran/