SolverType

Select solver type for simulation

Description

The SolverType property lets you specify the solver to use for a simulation. For a discussion about solver types, see Choosing a Simulation Solver.

Changing the solver type changes the options (properties) specified in the SolverOptions property of the configset object. If you change any SolverOptions, these changes are persistent when you switch SolverType. For example, if you set the ErrorTolerance for the expltau solver and then change to impltau when you switch back to expltau, the ErrorTolerance will have the value you assigned.

Characteristics

Applies to	Object: Configset
Data type	enum
Data values	'ode15s', 'ode23t', 'ode45', 'sundials', 'ssa', 'expltau', 'impltau'. Default is 'ode15s'. Note If your model contains events, you cannot specify 'expltau' or 'impltau' for the SolverType property. If your model contains doses, you cannot specify 'ssa', 'expltau', or 'impltau' for the SolverType property. If your model contains algebraic rules, you cannot use 'ode45'. SimBiology always uses the SUNDIALS solver to perform sensitivity analysis on a model, regardless of what you have selected as the SolverType in the configuration set.
Access	Read/write

Examples

1. Retrieve the configset object from the modelObj.

   modelObj  = sbiomodel('cell');
   configsetObj = getconfigset(modelObj)
   
   
   Configuration Settings - default (active)
        SolverType:                  ode15s
        StopTime:                    10.000000
   
      SolverOptions:
        AbsoluteTolerance:           1.000000e-006
        RelativeTolerance:           1.000000e-003
        SensitivityAnalysis:         false
   
      RuntimeOptions:
        StatesToLog:                 all
   
      CompileOptions:
        UnitConversion:              false
        DimensionalAnalysis:         true
   
      SensitivityAnalysisOptions:
        Inputs:                      0
        Outputs:                     0

2. Configure the SolverType to ode45.

   set(configsetObj, 'SolverType', 'ode45')
   configsetObj
   
      Configuration Settings - default (active)
        SolverType:                  ode45
        StopTime:                    10.000000
   
      SolverOptions:
        AbsoluteTolerance:           1.000000e-006
        RelativeTolerance:           1.000000e-003
        SensitivityAnalysis:         false
   
      RuntimeOptions:
        StatesToLog:                 all
   
      CompileOptions:
        UnitConversion:              false
        DimensionalAnalysis:         true
   
      SensitivityAnalysisOptions:
        Inputs:                      0
        Outputs:                     0