Administering Platform LSF - SAS

The Checkpoint Directory
The Checkpoint Directory
A checkpoint directory must be specified for every checkpointable job and is
used to store the files to restart a job. The directory must be writable by the
job owner. To restart the job on another host (job migration), the directory
must be accessible by both hosts. LSF does not delete the checkpoint files;
checkpoint file maintenance is the user’s responsibility.
LSF writes the checkpoint file in a directory named with the job ID of the job
being checkpointed under the checkpoint directory. This allows LSF to
checkpoint multiple jobs to the same checkpoint directory. For example, when
you specify a checkpoint directory called my_dir and when job 123 is
checkpointed, LSF will save the checkpoint file in:
my_dir/123/
When LSF restarts a checkpointed job, it renames the checkpoint directory
using the job ID of the new job and creates a symbolic link from the old
checkpoint directory to the new one. For example, if a job with job ID 123 is
restarted with job ID 456 the checkpoint directory will be renamed to:
my_dir/456/
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Administering Platform LSF