Currently seqexec has the -f option to "fail fast" in the event that one of its sub-tasks fails. This is useful because it guards against re-executing tasks at the end of the task list when the job is retried. In addition to this feature we should have another feature to allow seqexec to skip successfully completed tasks on retry. One way this could be implemented is to have seqexec write a file before it fails that indicates what the last successful task executed was. When seqexec restarts it would look for the file and, if it is there, it would use it to restart directly at the failed task.