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The Ionworks DAE Solver (IonworksSolver) is a faster drop-in replacement for PyBaMM’s IDAKLUSolver. It returns the same results as IDAKLU and falls back to it automatically for models it can’t accelerate. It is the platform’s default solver for every pipeline submission and SDK simulation — there is nothing to configure.
The fast path currently supports fixed output time steps only, with linear interpolation between the t_eval and t_interp points. Models with events (such as voltage cut-offs) are run through IDAKLU instead.