Predict timesteps for ASAD in advance #20
Description
Transfer of ukca:#144 from MOSRS.
The ASAD chemistry solver currently includes redundant calculation. For each chunk of data passed to the solver, if any of the corresponding grid-boxes fail to solve then the entire chunk is solved again at half the timestep until convergence is achieved. If we were able to predict the required timestep in advance then we could avoid this redundant calculation.
Predicting the timestep in advance is not trivial, however. This is ongoing research work on whether we are able to map data available to the solver at its initialisation to the eventual number halving steps and/or required timestep. The process may or may not include machine learning.