P8 missing interpolated pgrb output for a specific subset of output hours

[LydiaStefanova-NOAA]

Expected behavior

Interpolated lower resolution files: pgrb2.1p00.$fh , pgrb2.0p50.$fh , pgrb2b.1p00.$fh , pgrb2b.0p50.$fh files should be created for every output hour ($fh). The output hours are 6hrs apart, from 000 to 840

Current behavior

These files are successfully created for all times except for fh 012 018 024 042 048 054 072 078 084 090 096 . Note that 000, 006, 030, 036, 060, and 066, as well as any fh > 100 are created successfully

Machines affected

Behaviour found on Hera but unlikely to be machine-dependent

To Reproduce

ufs-weather-model tag for P8: Prototype-P8 hash 9ae617e
global-workflow tag for P8: prototype/8 hash 9a538e

Context

Detailed Description

Additional Information

An example output can be found here: /scratch1/NCEPDEV/climate/role.ufscpara/Prototype8/work-P8/COMROOT/p82015040100/gfs.20150401/00/atmos/

The corresponding logs are here: /scratch1/NCEPDEV/climate/role.ufscpara/Prototype8/work-P8/COMROOT/p82015040100/logs/2015040100

Possible Implementation

[LydiaStefanova-NOAA]

@WalterKolczynski-NOAA tagging you in case you don't see it otherwise