Difference between revisions of "Useful Commands"

Revision as of 06:44, 17 September 2012

To list processes you run on the cluster nodes, run this command on the head node:

 ListMyProcesses

The following command uses gstat to get a list of nodes by load. It then sorts the list by load/free CPUs and connects you to the node with the most free CPUs. The format below is an alias that you can put in your .bashrc file if you want it to be automatically applied to your environment.

 alias fss='ssh `gstat -1a -i necluster|grep node|sort -gr -k2|sort -k13|sort -k11|head -n1|cut -f1 -d" "`'

gstat -p8649 -1a -i necluster

The above, add sum of user+system load and sort on the load sum. The least loaded nodes are shows first:

gstat -p8649 -1a -i necluster | grep node | awk '{print $11+$13"\t"$1;}' | sort -g

@@ Line 8: / Line 8: @@
 *  The following command uses ''gstat'' to get a list of nodes by load.  It then sorts the list by load/free CPUs and connects you to the node with the most free CPUs.  The format below is an alias that you can put in your ''.bashrc'' file if you want it to be automatically applied to your environment.
 <source lang="bash">
-  alias fss='ssh `gstat -1a -i necluster | grep node | sort -gr -k 2 | sort -k 7 | head -n1 | cut -f1 -d" "`'
+  alias fss='ssh `gstat -1a -i necluster|grep node|sort -gr -k2|sort -k13|sort -k11|head -n1|cut -f1 -d" "`'
 </source> <br>