Solver reset method
Option to specify whether solver recomputes Jacobian matrix during solver reset
Model Configuration Pane: Solver
Description
The Solver reset method specifies whether the solver recomputes the Jacobian matrix during solver resets. Solver resets happen in response to certain simulation conditions, such as zero crossings. Recomputing the Jacobian improves the accuracy of simulation results but requires additional computations that can slow simulation. Use this parameter to prioritize solver reset speed against computational accuracy as needed for your model.
Dependencies
To enable this parameter:
Set the solver Type to
Variable-step.Set the Solver parameter to
ode15s (stiff/NDF),ode23t (mod. stiff/Trapezoidal), orode23tb (stiff/TR-BDF2).
Settings
Fast (default) | RobustFastThe solver does not recompute the Jacobian matrix for each solver reset.
Selecting this option can improve simulation performance but simulations might produce inaccurate results.
RobustThe solver does recompute the Jacobian matrix for each solver reset.
If you suspect simulation results are incorrect, simulate with the robust solver reset method. If the simulation results do not change, revert back to the fast solver reset method.
Programmatic Use
Parameter: SolverResetMethod |
| Type: string | character vector |
Value:
"Fast" | "Robust" |
Default:
"Fast" |
Version History
Introduced before R2006a
