From 856949e550c5b3b58ff22c00d82cae7c160f1a2a Mon Sep 17 00:00:00 2001
From: Morris Jette <jette@schedmd.com>
Date: Tue, 10 Dec 2013 08:44:43 -0800
Subject: [PATCH] add gres.conf optimization advice

---
 doc/man/man5/gres.conf.5 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/doc/man/man5/gres.conf.5 b/doc/man/man5/gres.conf.5
index 7e087c69a3e..c152fc32d71 100644
--- a/doc/man/man5/gres.conf.5
+++ b/doc/man/man5/gres.conf.5
@@ -58,6 +58,11 @@ use of resources allocated to a different user).
 If \fBFile\fR is specified then \fBCount\fR must be either set to the number
 of file names specified or not set (the default value is the number of files
 specified).
+Slurm must track the utilization of each individual device If device file
+names are specified, which involves more overhead than just tracking the
+device counts.
+Use the \fBFile\fR parameter only if the \fBCount\fR is not sufficient for
+tracking purposes.
 NOTE: If you specify the \fBFile\fR parameter for a resource on some node,
 the option must be specified on all nodes and SLURM will track the assignment
 of each specific resource on each node. Otherwise SLURM will only track a
-- 
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