Re: [hwloc-users] memory binding on Knights Landing

2016-09-12 Thread Dave Love
Brice Goglin writes: > So what's really slow is reading sysfs and/or inserting all hwloc > objects in the tree. I need to do some profiling. And I am moving the > item "parallelize the discovery" higher in the TODO list :) It didn't seem to scale between systems with the

Re: [hwloc-users] memory binding on Knights Landing

2016-09-12 Thread Dave Love
Brice Goglin writes: > I am not sure where that hwloc for RHEL on KNL is available from. It > might be in Intel's "XPPSL" software suite. I didn't know about that, but it only has hwloc 1.11.2, as in RHEL7 beta, in case the more recent changes for KNL are relevant.

Re: [hwloc-users] memory binding on Knights Landing

2016-09-12 Thread Brice Goglin
Le 08/09/2016 19:17, Brice Goglin a écrit : > >> 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. > Binding itself shouldn't be slower. But hwloc's