Jeff Hammond <jeff.scie...@gmail.com> writes:

>> By the way, is it expected that binding will be slow on it?  hwloc-bind
>> is ~10 times slower (~1s) than on two-socket sandybridge, and ~3 times
>> slower than on a 128-core, 16-socket system.
>>
>> Is this a bottleneck in any application?  Are there codes bindings memory
> frequently?

As Brice pointed out, I was stupidly confusing discovery and binding,
but there are cases where a second to do the discovery could be
significant, even if I might not consider them too sensible.

> Because most things inside the kernel are limited by single-threaded
> performance, it is reasonable for them to be slower than on a Xeon
> processor, but I've not seen slowdowns that high.
>
> Jeff

Yes.  Actually I was originally comparing with a slower 64-core
Interlagos, but that was with an older hwloc.
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