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Subject: [OMPI users] spin-wait backoff
From: David Singleton (David.Singleton_at_[hidden])
Date: 2010-09-02 20:50:02


I'm sure this has been discussed before but having watched hundreds of
thousands of cpuhrs being wasted by difficult-to-detect hung jobs, I'd
be keen to know why there isn't some sort of "spin-wait backoff" option.
For example, a way to specify spin-wait for x seconds/cycles/iterations
then backoff to lighter and lighter cpu usage. At least that way, hung
jobs would become self-evident.

Maybe there is already some way of doing this?

Thanks,
David