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- Continuous mode, with state handling, suitable for operational forecasting;
- Event mode, without state handelinghandling;
The technical implementations for both modes of working are quite similar. However it is important that models to be implemented in continuous mode, have also been calibrated for such mode. The same holds for event mode.
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Compatibility
A note on the compatibilty compatibility of the HEC-HMS adapter: Most adapter developments are done under projects for clients with a specific HEC-HMS model version. The functionality of the updated adapter will be verified for the new HEC-HMS model version. Eventhough Even though care is taken not to break backwards compatibility, there is no guarantee that a newer adapter version will work on older HEC-HMS models.
The HEC-HMS adapter that was created in October 2019 is based on 32-bit binaries/libraries and runs on Java 8. This adapter was developed for HEC-HMS models with version 4.2.1 and was tested against HEC-HMS model of that version. This version of the adapter is still available in Stable2020.01 and earlier branches.
In August 2021 the HEC-HMS adapter has been updated to work with HEC-HMS models of version 4.8. Since HEC-HMS was updated to a 64-bit application, running on Java 11 since version 4.5, the model adapter had to be updated to work with 64-bit binaries/libraries and run on Java 11. This adapter version is not backwards compatible with 32-bit HEC-HMS models (v. 4.4.1 and earlier). This adapter has not been tested with 64-bit HEC-HMS models before version 4.8 (v. 4.5/4.6/4.7). This version of the adapter has been backported to the Stable2020.02, NA2020.02 and later branches.
Operating HEC-HMS Model and FEWS Adapter
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