[Ncep.list.emc.fv3gfs_tickets] FV3GFS Ticket #12: Changes for nests
FV3GFS Trac Ticket
ncep.list.emc.fv3gfs_tickets at noaa.gov
Wed Apr 5 17:07:44 UTC 2017
#12: Changes for nests
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Reporter: tom.black@… | Owner: george.gayno@…
Type: enhancement | Status: accepted
Priority: major | Milestone:
Component: component1 | Version:
Resolution: | Keywords: nest
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Comment (by george.gayno@…):
As mentioned in comment:8, the build on Theia uses "-O3" and on Cray uses
"-O0". I used Grads to view the output orography files created on each
machine. I only checked tiles 1 and 7. And only the 'rlat', 'rlon',
'slmsk', 'land_frac', 'orog_filt' and 'orog_raw' records.
For tile 1, only the 'land_frac' record was different. Only one point was
different. This difference was 'floating point'.
For tile 7 (the nest), the 'land_frac' record had differences between
-.002 and -.001. The 'orog_raw' and 'orog_filt' records had differences
between -1.5 and 0.9. All differences were confined to a single column in
the middle of the grid.
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Ticket URL: <https://svnemc.ncep.noaa.gov/trac/fv3gfs/ticket/12#comment:11>
fv3gfs <https://svnemc.ncep.noaa.gov/trac/fv3gfs>
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