# cvode_basic.py¶

assimulo.examples.cvode_basic.run_example(with_plots=True)[source]

Demonstration of the use of CVode by solving the linear test equation $$\dot y = - y$$

on return:

• exp_mod problem instance
• exp_sim solver instance

Final Run Statistics: CVode Test Example: $\dot y = - y$

Number of steps                                 : 49
Number of function evaluations                  : 63
Number of Jacobian evaluations                  : 1
Number of function eval. due to Jacobian eval.  : 1
Number of error test failures                   : 1
Number of nonlinear iterations                  : 59
Number of nonlinear convergence failures        : 0

Solver options:

Solver                   : CVode
Linear multistep method  : BDF
Nonlinear solver         : Newton
Linear solver type       : DENSE
Maximal order            : 5
Tolerances (absolute)    : 0.0001
Tolerances (relative)    : 0.0001

Simulation interval    : 0.0 - 5.0 seconds.
Elapsed simulation time: 0.00170302391052 seconds.
Final Run Statistics: CVode Test Example: $\dot y = - y$

Number of steps                                 : 11
Number of function evaluations                  : 19
Number of Jacobian evaluations                  : 1
Number of function eval. due to Jacobian eval.  : 1
Number of error test failures                   : 0
Number of nonlinear iterations                  : 15
Number of nonlinear convergence failures        : 0

Solver options:

Solver                   : CVode
Linear multistep method  : BDF
Nonlinear solver         : Newton
Linear solver type       : DENSE
Maximal order            : 5
Tolerances (absolute)    : 0.0001
Tolerances (relative)    : 0.0001

Simulation interval    : 5.0 - 7.0 seconds.
Elapsed simulation time: 0.000404834747314 seconds.


Note

Press [source] (to the top right) to view the example.