Extending an inversion¶
- Two cases are dealt with here:
an inversion that stopped unduly e.g. because the computing time was up or a disk was full or another such issue
an inversion that stopped duly but must be extended e.g. the total number of simulations is reached or a better convergence can be asked for.
In case the inversion has been unduly stopped, remove the last directory generated by the CTM (for example, for CHIMERE with periods of 24 hours, the last day available).
Modify the yaml to use the computations which are valid:
simulatoris not specified in the yaml (because it is not necessary when the default cost is used, as is generally the case), specify it as shown in the following example.
mode: minimizer: df1: 0.5 epsg: 0.1 maxiter: 10 nsim: 25 plugin: name: M1QN3 version: std simulator: plugin: name: gausscost version: std reload_from_previous: true plugin: name: 4dvar version: std save_out_netcdf: true obsoperator: plugin: name: standard version: std type: obsoperator autorestart: True
If the inversion is to be extended, the characteristics of the minimizer linked to the stopping criteria must be changed. For example, for m1qn3,
epsgcan be decreased and
maxiter, nsimcan be increased.
the job can then be launched again.