Hybrid progress over last 18 months

  • Richard and I have almost entirely been pulled onto the main UKESM1 project
  • Richard has got a 3D coupling branch onto trunk (untested with hybrid, as no hybrid model since UM10.4).
  • Richard has created drivers for the hybrid model
  • Ran hybrid model for 5 years
  • We had some out-of-memory problems with UM10.4 version.
    • Investigation showed that there seemed to be a memory leak in microphysics
    • This is common to all jobs (incl GA + StratTrop & UM10.2 hybrid)
    • Hybrid is more likely to suffer this problem because of extra memory for
      • Full chemistry
      • Coupling fields
  • Hoping that problem is less bad at UM10.9. Otherwise, use more cores