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From Bhavin Thaker <bhavintha...@gmail.com>
Subject Re: Futex
Date Thu, 23 Nov 2017 19:06:27 GMT
Do we have performance/profiling measurement evidence to prove/disprove the
claims of the impact of mutex bottleneck in MXNet?

Bhavin Thaker.

On Thu, Nov 23, 2017 at 11:03 AM Tianqi Chen <tqchen@cs.washington.edu>
wrote:

> If they are not bottleneck. Then resorting to standard library solution is
> always preferred
>
> Tianqi
>
> On Thu, Nov 23, 2017 at 11:01 AM, Chris Olivier <cjolivier01@gmail.com>
> wrote:
>
> > Was doing some timing with futexes (we used them a lot in a previous life
> > in database engines) and they're consistently about 20-30% faster than
> > standard mutexes in Linux.
> >
> > However, it seems like this is not worth making a change since mutexes
> > don't tend to get called so much that it would seem to make a noticeable
> > difference, although I could be wrong -- so far besides the queue, I am
> not
> > aware of any major bottlenecks on mutexes.
> >
> > Any thoughts?
> >
> > -Chris
> >
>

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