Changes between Version 34 and Version 35 of 2018WP/SharedActions/Status_dev_merge_2017_branch

Timestamp:

2018-03-26T11:30:28+02:00 (6 years ago)

Author:

mathiot

Comment:

--

2018WP/SharedActions/Status_dev_merge_2017_branch

@@ -16 +16 @@
 
 
-== 16 February 2018 : METO: eORCA1 and eORCA025 occasional failures with !NaNs 
+== 16 February 2018 : METO: eORCA1 and eORCA025 occasional failures with !NaNs (SOLVED in r9415)
 
 I'm getting occasional failures with a segmentation fault in icb_ground in eORCA1 and eORCA025 built from the latest dev_merge_2017 branch (after several months of integration). I think icb_ground is acting as an error trap for NaN values produced in ice_dyn_rhg_evp. I will try to trace it back further next week. (Dave Storkey).
 
 '''Update 21 Feb:''' This looks like some kind of instability which doesn't get picked up by the checks in stp_ctl. There is very thick ice (~100m) and a negative top-level thickness (e3t) at a single point which I think results in a divide-by-zero in sbc_isf_div. It looks different to the instability in the the 300 timestep ORCA2LIM3PIS_ST run in SETTE, which doesn't show any abnormally thick ice. 
+
+'''Update 21 March:''' The Ice thickness is not "low capped" by rn_himin before thermodynamics is running. In case of very small ice thickness, the ice diffusion blow up. 
 
 == 12 February 2018 : ORCA2_LIM3_PISCES with icebergs is not reproducible