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CCPP Framework Meeting Minutes 2020 03 19

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Dom Heinzeller edited this page Mar 19, 2020 · 8 revisions

Agenda:

  • RRTMGP merge to NCAR dtc/develop - required some development work on ccpp-framework (ccpp_prebuild.py) to make the CCPP kind and type definitions available to the host model (so that it can allocate the memory)
  • NCAR/CGD is only interested in the RRTMGP version (this is what they are using now) - will try to do some testing with the version that goes into NCAR dtc/develop
  • Collaboration with NRL/NEPTUNE:
    • Jim Doyle and Alex Reinecke have some money to develop CCPP (framework in particular)
    • discussion was around availability of staff, how the work they are interested in is related to cap_gen
    • NRL interests: SCM (spectral element method for the vertical coordinate; currently SCM is taking the vertical velocity to do vertical advection); CCPP framework to provide information which arrays to allocate/perform advection/... (this is something Steve is currently working on); work related to the SIP proposal (GPU, NUOPC caps from CCPP)
    • invite NRL to one of the next ccpp-framework meetings
    • difficulty is cross-agency funding (how to get the money from NRL to NOAA - easier to get to NCAR)
    • but do we have the people to do the work???
    • alternative arrangement is that NRL hires someone and we are taking an advisory role
    • NCAR/CGD will soon be looking for a software engineer to work on CCPP - funding from NRL would be useful
    • Invite NRL to the meeting in two weeks (April 2nd), then have the GPU conversion with NRL and MPAS a week or two later

GPU preparedness (Steve was talking with CISL performance group)

  • code is written in a way that can be ported to GPUs quite easily
  • need to conduct some experiments
  • there is a version of MG that has been ported to GPUs
  • GPU discussion with MPAS team would be useful to get their insight and experience

Intel OneAPI

Action items:

  • Ligia will invite NRL and investigate the money flow
  • Steve will look at the possible spending schedule
  • Steve will prepare a cap_gen status report

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