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FSAL for ode solvers #146
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numericsnumerical solversnumerical solversroadmapThis label identifies issues that are development roadmap items for PathSimThis label identifies issues that are development roadmap items for PathSim
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numericsnumerical solversnumerical solversroadmapThis label identifies issues that are development roadmap items for PathSimThis label identifies issues that are development roadmap items for PathSim
Some runge kutta solvers such as
RKBS32andRKDP54have the first-same-as-last (FSAL) property, where the last slope of the previous stage is the first slope of the next one. This saves one function evaluation per successful step and therefore increases solver efficiency.Currently this is not implemented in pathsim, but it would give some additional 5% to 20% speedup for some solvers.