TORQUE Resource Manager 5.1.0 Release Notes
January 2015

The release notes file contains the following sections:

> New Features
> Differences
> Known Issues
> Resolved Issues

===== New Features =====

The following is a summary of key new features in TORQUE Resource Manager 5.1.0.

==> Ability to Provide Condensed qstat Output

   - A 'qstat -C' option, which specifies that TORQUE will provide only a condensed output (job name, resources used, queue, state, and job owner) for jobs that have not changed recently (as per the job_full_report_time parameter), has been added. Jobs that have recently changed will continue to send a full output.

==> Performance Enhancements to MOM Clean-up Time

   - Some minor performance enhancements were made to improve MOM clean-up time.

===== Differences =====

This section contains differences in previously existing features that require a change in configuration or routine.

==> CLIENTRETRY Configuration Option Support for qdel

   - The qdel parameter now includes the -b option and CLIENTRETRY configuration option support. This feature functions similar to -b option for qsub. Specifically:
	* -b <num> command line argument support
	* CLIENTRETRY configuration option support
	* PBS_CLIENTRETRY environment variable support

==> Jobs Deleted When the Dependency Can No Longer Be Satisfied

   - When a job is deleted because its dependency can no longer be satisfied, that job will follow the keep_completed parameter set (if any) for pbs_server. Previously, jobs were purged immediately.

==> pbs_server -t No Longer Supports hot|warm|cold Options

   - The pbs_server -t option no longer supports the hot|warm|cold Options. Other options are still supported.

===== Known Issues =====

The following are known issues in the TORQUE Resource Manager 5.1.0. 

> DNS caches are not purged of removed nodes when Elastic Computing is enabled. SLES 11 SP1 has an issue with giving the old IP address toTORQUE even after updating /etc/hosts. Do not use SLES SP1 if you are using this method to manage the IP addresses for pbs_server. The mom'sOSs are irrelevant. (TRQ-2765)

> Some limitations exist in the way that pbsdsh can be used. Please note the following situations are not currently supported: 
   - Running multiple instances of pbsdsh concurrently within a single job.(TRQ-2851) 
   - Using the -o and -s options concurrently; although requesting these options together is permitted, only the output from the first node is displayed rather than output from every node in the chain. (TRQ­2690) 


===== Resolved Issues =====

The following is a list of some key bugs fixed in TORQUE Resource Manager 5.1.0. Following each issue description is an associated issue number in parentheses.

> HOST_NAME_SUFFIX was no longer adding suffix to job names. This bug is fixed. (TRQ-2956) 

> pbs_mom filling up the logs in a HA environment. Reduced verbosity in error logging in HA environments. (TRQ-2863) 

> Delays reported with Preemption. The following changes were made to reduce delays: (TRQ-3026) 
   - Speed up process data collection to help diminish time to rerun a job. 
   - Correctly sum job memory and cpu time resources for processes created under setsid() calls within a job. 
   - Avoid an infinite loop in pbs_mom when running under a LinuxContainer (lxc). 



Copyright 2015, Adaptive Computing Enterprises, Inc.