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From Kellen Sunderland <notificati...@github.com>
Subject Re: [apache/incubator-mxnet] [RFC] GPU performance improvements in MXNet engine (#18951)
Date Tue, 18 Aug 2020 00:28:16 GMT
I really like this proposal, thanks for the great write-up Przemyslaw.

I haven't totally thought through pros/cons, but would it be possible to return a cudaStreamWaitEvent
by default after every block of operators is called, and use that as a reference for any dependent
block of ops? Would this unblock our GPU worker threads because we're not calling a cudaStreamSync?

If I'm understanding correctly that would be the equivalent of what you're proposing in your
second scenario (when we have two cuda streams)? Would it have a lot of overhead in scenario
1 where we use same stream?

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