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Adapters and models should write one or more log files. Log message should be recognizable as debug, info, warn or error by a pattern. In FEWS this pattern (for example "ERROR“ERROR:*"”) is configured.
When FEWS finds an error log line the simulation will be marked as failed.
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A model state makes it possible to continue a run later. The state files that are exported by FEWS and will be imported after the simulation are listed in the run. When the model state contains time information it is sometimes desired that the pre-adapter adjust this time to allow the states to be used for a different time to reduce the warming up period of a simulation. The pre-adapter can adjust the model configuration to switch on/off the generation of a state file at the end of a run. The pre-adapter knows if states are imported after the simulation by querying the "output“output_netcdf_files" files” variable in the run file.
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The pre-adapter and post adapter don't don’t have to bother about translating the FEWS location ids and parameter ids to model location and variable ids. This mapping can be configured in FEWS. When the CF standard names are configured for the FEWS parameters the standard names will also be written to the exported NetCDF files and recognized while importing. FEWS is also exporting the location coordinates to the NetCDF input and place holder files. Some adapters choose to use the coordinates and/or the standard names for the mapping.