Release Notes

Moab Workload Manager

Software Version 6.0

   Copyright (C) 2010 by Adaptive Computing Enterprises, Inc. -- 
                         All Rights Reserved.

   This document provides an overview of the changes made in a major release 
   of Moab Workload Manager.  A major release includes significant new 
   functionality and breaks compatibility with previous versions.

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Contents

   This document contains the following sections:

     * Notice
     * Overview
     * What's New
     * Installation
     * Additional Resources

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Notice

   Distribution of this document for commercial purposes in either hard or
   soft copy form is strictly prohibited without prior written consent from
   Adaptive Computing Enterprises, Inc.

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Overview

   This is a major release of Moab Workload Manager 6.0, and includes a number
   of new features, improvements, and fixes.  Highlights in this release 
   include multi-threaded, real-time, database-backed node and job information 
   reporting, configurable limits, alternative event file syntax, resource
   reservation during preemption, GPU scheduling,

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What's New

   The following is a list of some of the new features and changes in this
   release. Please see the CHANGES file for additional details.

     * Configurable thread pool for client commands -- Beginning with Moab 
       6.0, administrators can configure a thread pool for responding to 
       Moab's most commonly used commands (showq, mdiag -n, and mdiag -j).  
       To configure the thread pool size, use the THREADPOOLSIZE parameter.  
       To disable threaded commands, configure the DISPLAYFLAGS parameter.

     * Default installation path -- With Moab 6.0, the default installation 
       path has been changed to /opt/moab.  This includes all binaries, 
       libraries, tools and configuration files (bin, sbin, lib, tools, and 
       etc respectively).  As always, the default installation directories 
       can be changed at configuration time (run ./configure --help for more 
       information).  In addition to changing the default installation path,
       Moab 6.0 also supports moving the configuration file into /opt/moab/etc 
       as a secondary location.

     * Configurable limits -- Moab 6.0 continues work on making certain limits 
       configurable (MAXGRES, MAXGMETRIC) while removing other limits (Users, 
       Groups, Accounts, Triggers).

     * Real-time job and node information -- When connected to a database 
       through ODBC, Moab will now write job and node information in real-time.
       Sites wishing to get real-time job and node information without adding 
       any load to the Moab server can configure Moab to dump job and node 
       information to a database.  See the "contrib/sql" directory as well as 
       the ODBC documentation.

     * Preemption and resource reservation -- With guaranteed preemption, jobs 
       that preempt other workload will reserve the preempted resources while 
       the preempted jobs clean up.  This is useful when jobs take more than a 
       few seconds to clean up.

     * New event file syntax -- Moab 6.0 now supports a cleaner and easier-to-
       parse event file syntax.  Rather than whitespace-delimited fields, Moab 
       can export its events in attribute-value pairs.  This can be turned on 
       with the WIKIEVENTS parameter.
       
     * GPU scheduling -- Although Moab has been scheduling GPU systems for many 
       years, Moab 6.0 brings integrated support for TORQUE's new GPU reporting 
       and requesting.  Moab will automatically populate node resources, 
       including GPUs, as reported by TORQUE and assign them to jobs requesting 
       GPUs.

   The following online documents (US Letter and European A4 formats) contain 
   additional and in-depth details on the Moab 6.0 features and enhancements, 
   including configuration examples and beta features.

     http://www.adaptivecomputing.com/resources/downloads/mwm/Moab_Release_6.0_Feature_Descriptions.pdf
     http://www.adaptivecomputing.com/resources/downloads/mwm/Moab_Release_6.0_Feature_Descriptions_(A4).pdf

   In addition to the above mentioned features Job Arrays and Per-Partition 
   Scheduling have entered the beta testing phase.  If you are interested in
   beta testing these features please contact technical support.

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Installation

   Information regarding system requirements, installation/upgrading, and
   initial testing is available in the documentation found at:

   http://www.clusterresources.com/products/mwm/docs/2.0installation.shtml

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Additional Resources

   Product Information
   
     Moab Adaptive Computing Suite
     * http://www.adaptivecomputing.com/products/index.php
     
     Moab Adaptive HPC Suite and Moab Cluster Suite
     * http://www.clusterresources.com/products.php

   Documentation
   
     Moab Adaptive Computing Suite Administrator's Guide
     * http://www.adaptivecomputing.com/resources/docs/macs/
     
      Moab Workload Manager Administrator's Guide for Moab Adaptive HPC Suite 
     and Moab Cluster Suite
     * http://www.clusterresources.com/products/mwm/docs/index.shtml

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