Opened 4 years ago

Closed 4 years ago

#2076 closed help (answered)

NaNs in error

Reported by: amenon Owned by: ros
Component: UM Model Keywords:
Cc: Platform: ARCHER
UM Version: 10.4



My suite (u-ai540) currently fails with an error

NaNs? in error term in BiCGstab[616] exceptions: Program is "/work/n02/n02/amenon/cylc-run/u-ai540/share/fcm_make/build-atmos/bin/um-atmos.exe"

There is no um-atmos.exe in that folder. Could you please help to sort this out?


Change History (2)

comment:1 Changed 4 years ago by ros

  • Owner changed from um_support to ros
  • Status changed from new to accepted


BICGstab is a classic "catch all" failure point in the UM. Arathy is now re-running the current cycle with a shorter timestep through the troublesome period, which often fixes this type of problem.

comment:2 Changed 4 years ago by ros

  • Resolution set to answered
  • Status changed from accepted to closed
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