IBM Spectrum LSF 10.1 Fix 496284 Readme File

Abstract 

This enhancement supports GPU job preemption when LSB_GPU_NEW_SYNTAX=Y is enabled in the lsf.conf file.

Description

Readme documentation for IBM Spectrum LSF 10.1 Fix  496284 including installation-related instructions, prerequisites and co-requisites, and list of fixes.

This fix addresses the following issue:

This enhancement support GPU job preemption.
This enhancement adds support for GPU job preemption. A low priority, j_exclusive or gpu mode is exclusive GPU job can be preempted by a high priority GPU job if the low priority job is rerunnable and has a configured mig interval.
Note: A non-GPU job can not preempt a GPU job.

Example :

Pre-Conditions:
lsf.conf : 

LSB_GPU_NEW_SYNTAX=Y [Must]

lsb.params :

PREEMPTABLE_RESOURCES=ngpus_physical [Must]

lsb.queues : 

Begin Queue

QUEUE_NAME=  highQ

PRIORITY     = 40

End Queue

Begin Queue

QUEUE_NAME = lowQ

PREEMPTION = PREEMPTABLE[highQ]

PRIORITY     = 20

RERUNNABLE  = Y [Optical]

MIG=0 [Optical]

End Queue

Scenario:

bsub -q lowQ  -gpu “num=1:j_exclusive=yes” ./gpuApp

bsub -q lowQ -gpu “num=1:mode=exclusive_process ./gpuApp

bsub -q highQ -gpu “num=2” ./gpuApp

Result :

The  job which is submitted to the highQ  can preempt the lowQ job 

Note : The preemptable job must be rerun-able and can be migration and mode is exclusive .

Readme file for: IBM® Spectrum LSF

Product/Component Release: 10.1 

Update Name: Fix 496284 

Fix ID: LSF-10.1-build496284

Publication date: 6 July 2018 

Last modified date: 6 July 2018 

1.     List of fixes 

2.     Download location 

3.     Products or components affected

4.     System requirements 

5.     Installation and configuration

6.     List of files

7.     Product notifications

8.     Copyright and trademark information

1.   List of fixes

N/A

2.   Download Location

Download Fix build 496284 from the following location: http://www.ibm.com/eserver/support/fixes/

3.   Products or components affected

Affected components include: LSF/mbatchd, LSF/mbschd 

4.   System requirements

linux2.6-glibc2.3-x86_64
linux3.10-glibc2.17-x86_64 

5.   Installation and configuration

5.1          Before installation

 (LSF_TOP=Full path to the top-level installation directory of LSF.)

1)    Log on to the LSF master host as root

2)    Set your environment:

-      For csh or tcsh: % source LSF_TOP/conf/cshrc.lsf

-      For sh, ksh, or bash: $ . LSF_TOP/conf/profile.lsf

5.2          Installation steps

1)    Go to the patch install directory: cd $LSF_ENVDIR/../10.1/install/

2)    Copy the patch file to the install directory $LSF_ENVDIR/../10.1/install/

3)    Run patchinstall: ./patchinstall <patch>

5.3          After installation

1)    Log on to the LSF master host as root

2)    Run badmin mbdrestart

5.4          Uninstallation

To roll back a patch:

1)    Log on to the LSF master host as root

2)    Run ./patchinstall -r <patch>

3)    Run badmin mbdrestart

6.   List of files 

mbatchd
mbschd 

7.   Product notifications

To receive information about product solution and patch updates automatically, subscribe to product notifications on the My notifications page (www.ibm.com/support/mynotifications) on the IBM Support website (support.ibm.com). You can edit your subscription settings to choose the types of information you want to get notification about, for example, security bulletins, fixes, troubleshooting, and product enhancements or documentation changes.

8.   Copyright and trademark information

© Copyright IBM Corporation 2018 

U.S. Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.

IBM®, the IBM logo and ibm.com® are trademarks of International Business Machines Corp., registered in many jurisdictions worldwide. Other product and service names might be trademarks of IBM or other companies. A current list of IBM trademarks is available on the Web at "Copyright and trademark information" at www.ibm.com/legal/copytrade.shtml.