run_problem now adds a recorder if not already present

[robfalck]

Summary

The dymos.run_problem convenience function now attaches a problem recorder that saves to 'dymos_solution.db' if not already present. The recorder in the command line interface saves to the same one. Unfortunately, the way the CLI currently works, we couldn't just only add the recorder in run_problem, due to the way the hooks work.

Related Issues

• Resolves Dymos run_problem function should automatically save a recording of the solution. #435

Status

• Ready for merge

Backwards incompatibilities

Trajectory.simulate now uses a Problem recorder to save the final results of the simulation.
This means that the results of the simulation are now obtained using

sim = om.CaseReader('dymos_simulation.db').get_case('final')

instead of

sim = om.CaseReader('dymos_simulation.db').get_case(-1)

New Dependencies

None

[coveralls]

Coverage decreased (-0.04%) to 96.048% when pulling 3022937 on robfalck:run_problem_update2 into 38d7e36 on OpenMDAO:master.

[coveralls]

Coverage decreased (-0.04%) to 96.048% when pulling 3022937 on robfalck:run_problem_update2 into 38d7e36 on OpenMDAO:master.