> On a related point, I've noticed sometimes one child job from a split task
> can fail, yet the rest of the child jobs continue to run on the cluster 
> wasting
> CPU time. As soon as one child job dies (assuming there are no plans for
> attempting a retry), I would like the parent task to kill all the
> other children,
> and fail itself. I suppose you could merge the output of any children which
> did finish... but it would be simpler not to bother.

Right now, yes, this would make sense- I'll see about adding it.  Ultimately we 
want to build in a mechanism for retrying child tasks that fail due to cluster 
errors, etc, so it isn't necessary to rerun the entire job.

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