[Wrf-users] Different results for 2 SGI clusters (WRFv3.1)
TitovM at ap.aurecongroup.com
Mon May 17 20:37:26 MDT 2010
Dear WRF Help and Users,
We bought new SGI cluster and I transferred all WRF versions and jobs from
old SGI cluster on a new one.
After installation of WRF on new SGI cluster I ran several trial jobs for
WRFv2.2, WWRFv3.0 and WRFv3.1
to be sure that WRF output is completely consistent with WRF output from
the old SGI cluster.
Configuration of both clusters is the same and I used 1cpu and multi-cpu
WRF trials to check that
both clusters produce the same results.
I've got exactly the same results for WRFv2.2 and WRFv3.0 and was very
surprised to receive very
close (correlation coefficient about 0.99) but still different results for
WRFv3.1 (for 1 cpu and for multi-cpu runs)
on a new cluster via the old one.
WRFv3.1 has the same configuration for old and new SGIs, the same
'namlist.input' and LANDUSE and VEGPAR tables.
Also the input terrestrial files (height and landuse) and input synoptic
files are the same.
But for WRFv3.1 I still have a bit different results on old and new SGI
Has anyone got such a problem before and why does it happen with WRFv3.1
I have no logical explanation to this difference between 2 SGIs with
exactly the same software (WRFv3.1 only).
Any help is highly appreciable.
Thanks a lot,
Dr. Mikhail Titov | Energy | Aurecon
Ph: +64 3 366 0821 ext.9231 DDI +64 367 32 31 | Fax: +64 3 379 6955 | Mob:
+64 21 106 5563
Email: TitovM at ap.aurecongroup.com
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