Clean up of stochastic physics

[pjpegion]

Description

The current stochastic physics code was extracted from the legacy GFS spectral model, and contains many unused subroutines variables. In addition the cellular automata portion of the code does not produce the same answer using different processor layout.

Solution

Removal of unused code, consolidation of many individual subroutine files into a few modules, and switch from f77 to f90. To address the CA issue, there is a new random number generator which is as fast as mersenne twister, but has less overhead in the seed calculation.

Alternatives

none

Dependencies

requires an update to ccpp-physics, fv3atm, and stochastic_physics

[junwang-noaa]

@pjpegion can we close the issue?

[pjpegion]

Yes!

…

On Tue, Oct 5, 2021 at 2:52 PM Jun Wang ***@***.***> wrote: @pjpegion <https://github.com/pjpegion> can we close the issue? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#823 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJIRVJEMSZMLV3S6H2OA2ZLUFNQQDANCNFSM5ETZZAIQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- Phil Pegion (he/him/his) Physical Scientist NOAA/Physical Sciences Laboratory (303) 497-7897 ***@***.***