drestart

Restarts a checkpoint (IBM RS6000 machines only)

Format: 

Restarts a checkpoint on IBM AIX

drestart [ –halt ] [ –g gid ] [ –r host ] [ –no_same_hosts ]

Arguments: 

–halt

TotalView stops checkpointed processes after it restarts them.

–g gid

Names the control group into which TotalView places all created processes.

–r host

Names the remote host upon which the restart occurs.

–no_same_hosts

Restart can use any available hosts. If you do not use this option, the restart occurs on the same hosts upon which the program was executing when the checkpoint file was made. If these hosts are not available, the restart operation fails.

Description: 

The drestart command restores and restarts all of the checkpointed processes. The CLI attaches to the base process, and if there are parallel processes related to this base process, TotalView then attaches to them.

Restarting using LoadLeveler

If you checkpointed a LoadLeveler POE job, you cannot restart it with this command. You must resubmit the program as a LoadLeveler job to restart the checkpoint. You also need to set the MP_POE_RESTART_­SLEEP environment variable to an appropriate number of seconds. After you restart POE, start TotalView and attach to POE. POE tells TotalView when it is time to attach to the parallel task so that it can complete the restart operation.

When attaching to POE, parallel tasks will not have been created yet, so you should avoid trying to attach to them. Therefore, use the –no_attach_parallel option when using the dattach command to attach to POE.

Examples: 

drestart

Restarts the checkpointed processes. The CLI automatically attaches to parallel processes.

drestart –halt -no_same_hosts

Restarts the checkpointed processes using available hosts. Stops checkpointed processes after restoring them.