From aa59162657025f203afa678ab876fe1c49df922d Mon Sep 17 00:00:00 2001
From: Moe Jette <jette1@llnl.gov>
Date: Thu, 21 Sep 2006 18:23:03 +0000
Subject: [PATCH] svn merge -r9435:9480
https://eris.llnl.gov/svn/slurm/branches/slurm-1.1
---
NEWS | 2 +-
doc/man/man5/slurm.conf.5 | 11 ++++++++++-
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/NEWS b/NEWS
index e4db47c3ab9..fa4cfa310d6 100644
--- a/NEWS
+++ b/NEWS
@@ -14,7 +14,7 @@ documents those changes that are of interest to users and admins.
better performance.
-- fixed certain tests in test suite to not run with bluegene or front-end
systems
- -- removed addresses from slurm_step_layout_t
+ -- Removed addresses from slurm_step_layout_t
-- Added new job field, "comment". Set by srun, salloc and sbatch. See
with "scontrol show job". Used in sched/wiki2.
diff --git a/doc/man/man5/slurm.conf.5 b/doc/man/man5/slurm.conf.5
index ccb0e37ea72..f161db80eff 100644
--- a/doc/man/man5/slurm.conf.5
+++ b/doc/man/man5/slurm.conf.5
@@ -558,11 +558,20 @@ Fully qualified pathname of the file system available to user jobs for
temporary storage. This parameter is used in establishing a node's \fBTmpDisk\fR
space.
The default value is "/tmp".
+
.TP
\fBTreeWidth\fR
\fBSlurmd\fR daemons use a virtual tree network for communications.
\fBTreeWidth\fR specifies the width of the tree (i.e. the fanout).
-The default value is 50.
+The default value is 50, meaning each slurmd daemon can communicate
+with up to 50 other slurmd daemons and over 2500 nodes can be contacted
+with two message hops.
+The default value will work well for most clusters.
+Optimaly system performance can typically be achieved if \fBTreeWidth\fR
+is set to the square root of the number of nodes in the cluster for
+systems having no more than 2500 nodes or the cube root for larger
+systems.
+
.TP
\fBUsePAM\fR
If set to 1, PAM (Pluggable Authentication Modules for Linux) will be enabled.
--
GitLab