From a001b4b67aa4986ddf3664f59b455e7604225015 Mon Sep 17 00:00:00 2001 From: Morris Jette <jette@schedmd.com> Date: Thu, 23 Apr 2015 12:00:23 -0700 Subject: [PATCH] clarify SelectTypeParameters CR_Pack_Nodes option --- doc/man/man5/slurm.conf.5 | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/doc/man/man5/slurm.conf.5 b/doc/man/man5/slurm.conf.5 index 6023efdfba2..9a9264eca08 100644 --- a/doc/man/man5/slurm.conf.5 +++ b/doc/man/man5/slurm.conf.5 @@ -2479,11 +2479,16 @@ Also see the partition configuration parameter \fBLLN\fR use the least loaded nodes in selected partitions. .TP \fBCR_Pack_Nodes\fR -Rather than evenly distributing a job's tasks evenly across it's allocated -nodes, pack them as tightly as possible on the nodes. For example, a job -starting ten tasks acrosss two nodes each without this option will start -five tasks on each of the two nodes. With this option, eight tasks will be -started on the first node and two on the second node. +If a job allocation contains more resources than will be used for launching +tasks (e.g. if whole nodes are allocated to a job), then rather than evenly +distributing a job's tasks evenly across it's allocated nodes, pack them as +tightly as possible on thsee nodes. +For example, consider a job allocation containing two \fBentire\fR nodes with +eight CPUs each. +If the job starts ten tasks across those two nodes without this option, it will +start five tasks on each of the two nodes. +With this option, eight tasks will be started on the first node and two tasks +on the second node. .TP \fBCR_Socket\fR Sockets are consumable resources. -- GitLab