= Grid_environment =
== How to Install PBS Based on DRBL ==

 * 1. Introduction[[BR]][[BR]]
  * TORQUE is an open source resource manager providing control over batch jobs and distributed compute nodes based on OpenPBS. Torque developed from OpenPBS, so the commands are the same. 

 * 2. Configure and Deploy Torque on the DRBL server and clients[[BR]][[BR]]
  * At first, you can download [http://www.clusterresources.com/downloads/torque/torque-2.3.3.tar.gz torque-2.3.3.tar.gz] and install and configure it by consulting [http://www.clusterresources.com/torquedocs21/a.ltorquequickstart.shtml Appendix L: TORQUE Quick Start Guide] or[http://www.globusconsortium.org/tutorial/ch2/ Globus Toolkit Tutorial_Deploying torque].[[BR]][[BR]] 
  * If you want to deploy Torque based on DRBL, you should re-configure data management on the compute nodes. PBS copies back output files at the end of the job.[[BR]][[BR]] 
   * By default, "copy back" is done using the pbs_rcp command which might not be supported or might not want to be supported on most clusters. If your home directories are mounted across cluster nodes, use the $usecp parameter to manage copy back. 
{{{
Edit /var/spool/torque/mom_priv/config and add one line.

      $usecp *:/home /home
}}}
  * Now you should deploy Torque to clients if you have already install and configure server successfully.[[BR]][[BR]]
   * Default shared directory on each machine is Torque installation directory (Ex: /opt/pbs).[[BR]][[BR]]
   * Each machine has its own directory: $PBS_HOME (/var/spool/torque). This directory stores the configuration files and logs for PBS daemons (Ex: pbs_server, pbs_sched, and pbs_mom) on each machine. 
{{{
On the DRBL_server:

      cp /var/spool/torque /tftpboot/nodes/[client_ip]/etc/ -rf
}}}
 

== References ==
 * [http://www.clusterresources.com/pages/products/torque-resource-manager.php TORQUE Resource Manager]
 * [http://www.clusterresources.com/torquedocs21/a.ltorquequickstart.shtml Appendix L: TORQUE Quick Start Guide]
 * [http://www.globusconsortium.org/tutorial/ch2/ Globus Toolkit Tutorial_Deploying torque]