User Interventions

GloMPO supports a couple of user interventions during optimization.

Manual Optimizer Termination

Users have manual control of optimizer termination. The user may create stop files in the GloMPOManager.working_dir which, when detected by the manager, will shutdown the chosen optimizer.

Files must be called STOP_x where x is the optimizer ID number. This file name is case-sensitive. Examples include STOP_1 or STOP_003. Note that these files should be empty as they are deleted by the manager once processed.

Manual Exit

To exit an optimization early and cleanly the user may:

• Create a file called EXIT in the GloMPOManager.working_dir as descried above; or

• Ctrl+C if the job is running in a terminal. GloMPO will intercept the signal and close gracefully.

Manual Checkpointing

Users may request a checkpoint be made at any time. This is done by creating a file named CHKPT in GloMPOManager.working_dir. As above, the file is deleted once detected by the manager so it should be empty.

This can still be used even if CheckpointingControl was not setup in the manager. In this case, its defaults are used and the checkpointing directory will appear in GloMPOManager.working_dir.