From 3766b05e22cb87e4e81b9ca4076b81804db3ad39 Mon Sep 17 00:00:00 2001 From: Morris Jette <jette@schedmd.com> Date: Tue, 26 Jul 2016 11:59:19 -0700 Subject: [PATCH] Clarify KNL heterogeneous NUMA issues The problem only exists on a subset of KNL models, those with 68 cores. bug 2941 --- doc/html/intel_knl.shtml | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/doc/html/intel_knl.shtml b/doc/html/intel_knl.shtml index b7c888e02b5..146fb740ddb 100644 --- a/doc/html/intel_knl.shtml +++ b/doc/html/intel_knl.shtml @@ -57,7 +57,8 @@ Examples below demonstrate use of HBM.</p> <p><a name="note"><b>NOTE</b></a>: Slurm version 16.05 and earlier can only support homogeneous nodes (e.g. the same number of cores per NUMA node). -KNL scn4 and quad modes are not homogeneous, but each each NUMA mode will have +KNL processors with <u>68 cores</u> (a subset of KNL models) will not have +homogeneous NUMA nodes in scn4 and quad modes, but each each NUMA node will have either 16 or 18 cores. This will result in Slurm using the lower core count, finding a total of 256 threads rather than 272 threads and setting the node to a DOWN state.</p> @@ -240,6 +241,6 @@ NodeName=nid[00000-00127] State=UNKNOWN <p class="footer"><a href="#top">top</a></p> -<p style="text-align:center;">Last modified 6 May 2016</p> +<p style="text-align:center;">Last modified 26 July 2016</p> <!--#include virtual="footer.txt"--> -- GitLab