minor tweaks to multi-cluster documentation

doc/html/multi_cluster.shtml

@@ -2,46 +2,47 @@
 
 <h1>Multi-Cluster Operation</h1>
 
-<p>A cluster is comprised of all the nodes managed by a single
-slurmctld.  SLURM v2.2 offers the ability to target commands to other
+<p>A cluster is comprised of all the nodes managed by a single slurmctld 
+daemon.  SLURM version 2.2 offers the ability to target commands to other
 clusters instead of, or in addition to, the local cluster on which the
 command is invoked.  When this behavior is enabled, users can submit
 jobs to one or many clusters and receive status from those remote
 clusters.</p>
 
-For example,
+<p>For example:</p>
 
 <PRE>
 juser@dawn> squeue -M dawn,dusk
 CLUSTER: dawn
-  JOBID PARTITION     NAME     USER  ST       TIME  NODES BP_LIST(REASON)
-1076897    pdebug    myJob    juser   R    5:04:10    128 dawn001[8-15]
-1076898    pdebug    myJob    juser   R    5:04:10    128 dawn001[16-23]
-1076899    pdebug    myJob    juser   R    5:04:10    128 dawn001[24-31]
+JOBID PARTITION   NAME   USER  ST   TIME NODES BP_LIST(REASON)
+76897    pdebug  myJob  juser   R   4:10   128 dawn001[8-15]
+76898    pdebug  myJob  juser   R   4:10   128 dawn001[16-23]
+16899    pdebug  myJob  juser   R   4:10   128 dawn001[24-31]
 
 CLUSTER: dusk
-  JOBID PARTITION     NAME     USER  ST       TIME  NODES BP_LIST(REASON)
-1001950    pdebug     aJob    juser   R       4:20    128 dusk000[0-15]
-1001949    pdebug     aJob    juser   R       5:01    128 dusk000[48-63]
-1001946    pdebug     aJob    juser   R       6:35    128 dusk000[32-47]
-1001945    pdebug     aJob    juser   R       6:36    128 dusk000[16-31]
+JOBID PARTITION   NAME   USER  ST   TIME NODES BP_LIST(REASON)
+11950    pdebug   aJob  juser   R   4:20   128 dusk000[0-15]
+11949    pdebug   aJob  juser   R   5:01   128 dusk000[48-63]
+11946    pdebug   aJob  juser   R   6:35   128 dusk000[32-47]
+11945    pdebug   aJob  juser   R   6:36   128 dusk000[16-31]
 </PRE>
 
-<p>Many of the slurm client commands now offer the "-M, --clusters="
+<p>Many of the SLURM client commands now offer the "-M, --clusters="
 option and the ability to specify a comma separated list of clusters.
 When <b>sbatch</b> is invoked with a cluster list, SLURM will submit
-the job to the cluster which meets the job's specifications and can
-run the job at the earliest time.</p>
+the job to the cluster which meets the job's specifications and is expected
+to begin the job at the earliest time.</p>
 
 <h2>Multi-Cluster Configuration</h2>
 <p>The multi-cluster functionality requires the use of the slurmDBD.
 The AccountingStorageType in the slurm.conf file must be set to the
 accounting_storage/slurmdbd plugin and the MUNGE or authentication
 keys must be installed to allow each cluster to communicate with the
-slurmDBD.  See <a href="accounting.html">accounting</a> for
-details.</p>
+slurmDBD.  Note that MUNGE can be configured to use different keys for
+communications within a cluster and across clusters if desired.
+See <a href="accounting.html">accounting</a> for details.</p>
 
-<p>Once configured, slurm commands specifying the "-M, --clusters="
+<p>Once configured, SLURM commands specifying the "-M, --clusters="
 option will become active for all of the clusters listed by the
 <b>"sacctmgr show clusters"</b> command.</p>