IBM Tivoli Workload Scheduler LoadLeveler for AIX ,V5.1 delivers improved serviceability and job launch performance when running the AIX V7.1 operating system

IBM United States Software Announcement 211-205
July 12, 2011

Table of contents
Overview Overview Publications Publications
Key prerequisites Key prerequisites Technical information Technical information
Planned availability date Planned availability date Ordering information Ordering information
Description Description Terms and conditions Terms and conditions
Product positioning Product positioning Prices Prices
Program number Program number Order
now Order now

Top rule
At a glance
Bottom rule

IBM® Tivoli® Workload Scheduler (TWS) LoadLeveler® for AIX®, V5.1 delivers enhancements running AIX V7 on select Power Systems™ servers, including the IBM Power 775 Supercomputer.

  • Maximize Power 775 hardware investment
  • Schedule jobs better by managing resources
  • Offer single point of control for job management
  • Schedule thousands of jobs on hundreds of server nodes
  • Allow improved availability to recover jobs

Back to topBack to top
Top rule
Bottom rule

IBM Tivoli Workload Scheduler (TWS) LoadLeveler V5.1, for AIX schedules applications to clusters of select Power Systems servers, including the Power Systems 775 Supercomputer. TWS LoadLeveler for AIX supports load balancing for interactive parallel operating environment sessions, and focuses on parallel job scheduling and scalability running on the AIX 7 operating system.

  • Improvements to scheduling and job launch performance in large scale clusters
  • Improved serviceability, logging, and analysis
  • Enhancements to advance reservation
  • Supported Host Fabric Interface (HFI) switch adapters

TWS LoadLeveler supports IBM Power 775 clusters using the Host Fabric Interface (HFI) and select stand-alone POWER7® clusters or POWER7 clusters connected with a LAN supporting IP running AIX V7.1.

For ordering, contact Your IBM representative or an IBM Business Partner. For more information contact the Americas Call Centers at 800-IBM-CALL (426-2255). Reference: RE001

Back to topBack to top
Top rule
Key prerequisites
Bottom rule

  • IBM AIX V7.1 with Service Pack 3, or later
  • IBM Power 775 Supercomputer (9125-F2C) or
  • Select stand-alone POWER7 clusters or POWER7 clusters connected with a LAN

Back to topBack to top
Top rule
Planned availability date
Bottom rule

August 26, 2011

Back to topBack to top
Top rule
Bottom rule

TWS LoadLeveler V5.1 is a job management tool that is designed to allow users to run more jobs in less time by matching the jobs' processing needs with the available resources. TWS LoadLeveler for AIX schedules jobs and provides functions for building, submitting, and processing jobs quickly and efficiently in a dynamic environment.

Batch jobs can be submitted, either serial or parallel, to run in the background and require no input from the user. LoadLeveler scheduling algorithms use the availability of consumable resources to determine the machine or machines on which a job will run.

Specific to LoadLeveler V5

Large scale cluster options are delivered to make commands more usable in large clusters and are designed to improve scheduling and job launch performance.

Additional commands are provided to improve serviceability, logging, and analysis:

  • Debugging commands provide consolidated information for tracing, and options for determining locking problems.
  • LoadLeveler information can be consolidated with end-to-end system management for event analysis using an open source offering from IBM called Toolkit for Event Analysis and Logging.
  • The default size of logs is increased and timestamps now include microseconds.

Advance reservation is enhanced to include a new reservation type and keyword for flexible resources and user options, and reservations can now specify floating consumable resources.

Support for HFI switch adapters allows users to request collective groups and send buffers for User Space parallel jobs running on HFI nodes. Administrators can configure LoadLeveler classes using new keywords.

Continued functional benefits

TWS LoadLeveler supports a rich set of configuration keywords. For sites using xCAT and LoadLeveler, LoadLeveler's configuration data can be stored in the same IBM DB2® database that xCAT configures. An option is provided to check the validity of configuration data in files or databases.

Among keyword and command enhancements is the capability for configuring groups of machines with common characteristics. After the configuration data specified by the administrator is read from the configuration files or database, it is stored in shared memory for quick access by LoadLeveler daemons and processes.

TWS LoadLeveler is packaged with separate install images for the resource manager and job scheduler. Each software package has its own set of externals such as commands and APIs. A user can have the option of installing just the LoadLeveler resource manager, which is also packaged with the Parallel Environment product, or installing both the LoadLeveler resource manager and scheduler, functions, as available in the LoadLeveler product today.

A well-defined API is created and made available in the LoadLeveler resource manager, to allow a robust and efficient interaction with any scheduler.

In making use of this API, a customer's scheduling software could provide scheduling functions in a similar way as the LoadLeveler scheduler does, while taking advantage of the specific features provided in the LoadLeveler resource manager.

Accessibility by people with disabilities

A U.S. Section 508 Voluntary Product Accessibility Template (VPAT) containing details on accessibility compliance can be requested at

Section 508 of the US Rehabilitation Act

TWS LoadLeveler for AIX is capable as of August 26, 2011, when used in accordance with IBM's associated documentation, of satisfying the applicable requirements of Section 508 of the Rehabilitation Act, provided that any assistive technology used with the product properly interoperates with it. A US Section 508 Voluntary Product Accessibility Template (VPAT) can be requested on the following website

Back to topBack to top
Top rule
Product positioning
Bottom rule

TWS LoadLeveler provides an excellent framework for managing both serial and parallel batch workload in a single cluster as well as multicluster environments. AIX jobs can be submitted within the same LoadLeveler cluster or across multiple clusters on a grid. TWS LoadLeveler supports load balancing for interactive parallel operating environment sessions and provides various advanced job scheduling functions in a large-scale parallel computing environment.

Back to topBack to top
Top rule
Program number
Bottom rule

number      VRM     Program name
5765-L50    5.1.0   IBM Tivoli Workload Scheduler LoadLeveler for AIX

Back to topBack to top
Top rule
Electronic Software Update Orders
Bottom rule

Entitled Software Update (ESU) is a way for customers to self order their Power software release upgrades via the Entitled Software Support (ESS) website without the need to go to their seller to place the upgrade order. Entitled Software Update (ESU) orders for Electronic Software Delivery (ESD) is now available in all countries.

ESU orders for software will be placed on the Entitled Software Support (ESS) website

Customers should generally select electronic delivery when ordering via ESU, but do have the ability to select physical delivery. Programs ordered for ESD will have the same download images provided as on the CD media shipped for physical orders. Countries requiring physical delivery of License Information documentation will have these documents shipped separately. This physical shipment will not delay the immediate availability of the ESD images for customer download.

ESD customers placing ESD software orders will receive an e-mail with the software order information. The ESU customer will be able to immediately proceed to the Downloads website for program access, instead of waiting for delivery of a physical package shipped from IBM.

Customers choosing physical delivery will also have the electronic images available for ESD download.

Business Partner information

If you are a Direct Reseller - System Reseller acquiring products from IBM, you may link directly to Business Partner information for this announcement. A PartnerWorld® ID and password are required (use IBM ID).

Back to topBack to top
Top rule
Offering Information
Bottom rule

Product information is available via the Offering Information website

Back to topBack to top
Top rule
Bottom rule

No publications are shipped with this program.

The following publications are available from the web:

  • IBM Tivoli Workload Scheduler LoadLeveler for AIX: Installation Guide (SC23-6791)
  • IBM Tivoli Workload Scheduler LoadLeveler: Using and Administering (SC23-6792)
  • IBM Tivoli Workload Scheduler LoadLeveler: Diagnosis and Messages Guide (SC23-6793)
  • IBM Tivoli Workload Scheduler LoadLeveler: Command and API Reference (SC23-6794)
  • IBM Tivoli Workload Scheduler LoadLeveler: Resource Manager (SC23-6790)

To access the above LoadLeveler documentation, refer to the IBM Cluster Information Center website. This website contains the most recent LoadLeveler documentation in PDF and HTML formats and is located at

The IBM Publications Center

The Publications Center is a worldwide central repository for IBM product publications and marketing material with a catalog of 70,000 items. Extensive search facilities are provided. Payment options for orders are via credit card (in the U.S.) or customer number for 50 countries. A large number of publications are available online in various file formats, and they can all be downloaded by all countries, free of charge.

Back to topBack to top
Top rule
Technical information
Bottom rule

Specified operating environment

Hardware requirements

IBM Power 775 clusters using the Host Fabric Interface (HFI) or Power 730 or Power 740 clusters running stand-alone or connected with a LAN supporting IP running AIX V7.1.

Software requirements

Operating environment: AIX V7.1 with Service Pack 3, or later

To run parallel operating environment jobs, IBM Parallel Environment Runtime Edition for AIX, V1.1 is required.

If using the database configuration option, Extreme Cloud Administrative Toolkit (xCAT) V2.6 using DB2 Workgroup Server Edition for High Performance Computing V1.1 is required.

The program's specifications and specified operating environment information may be found in documentation accompanying the program, if available, such as a README file, or other information published by IBM, such as an announcement letter. Documentation and other program content may be supplied only in the English language.

Companion products

IBM Parallel Environment Runtime Edition for AIX provides a high-function, parallel, application development environment that can reduce the time and effort required to develop parallel applications. These parallel applications could then be run with LoadLeveler.

Extreme Cloud Administrative Toolkit (xCAT) V2, an open source scalable distributed computing management and provisioning tool available from SourceForge, offers a unified interface for deploying and managing large systems. LoadLeveler shares the DB2 database configured by xCAT to store configuration data.

IBM provides limited support services for xCAT. For details, refer to Software Announcement 211-107, dated July 12, 2011.

TWS LoadLeveler can be configured to use a shared file system like IBM General Parallel File System™ (GPFS™). By placing all the home and local directories under one shared file system, customers are able to access all the configuration files and directories necessary to recover and restart a failed TWS LoadLeveler server anywhere in the cluster. GPFS APAR #IV00760 is required in support of the Power 775 cluster solution.

IBM DB2 Workgroup Server Edition 9.7 for High Performance Computing can provide the database used by xCAT to store configuration data when running in a high performance computing cluster. This offering is specific to the IBM Power 775 Supercomputer cluster.


TWS LoadLeveler V5.1 cannot coexist in a mixed environment with previous versions. In order to migrate from a previous version, LoadLeveler must be rendered quiescent.


The checkpoint restart function is not available with TWS LoadLeveler V5.1.

Planning information

The following functions, keywords, or commands are not provided in V5:

  • The ll_preempt subroutine is removed and is replaced by the ll_preempt_jobs subroutine.
  • The alias machine stanza statement is deprecated. The function provided by this statement, to configure a machine stanza name when the stanza name does not match the machine's hostname, is automated, making the alias statement unnecessary.
  • MVAPICH information is removed.
  • Scale-across information is removed.

TWS LoadLeveler is distributed as a single package available via DVD media or electronic download with the following:

  • IBM International Program License Agreement in multilanguage booklet (LC23-5107-00) and its License Information (L-RHAN-8DGQ27) in multiple languages (ll.loc.license)
  • Proof of Entitlement (PoE)
  • Product README file that describes the program's specified operating environment and program specifications
  • Program installp images:
    LoadLeveler images (LoadL.resmgr, LoadL.scheduler)

Security, auditability, and control

Tivoli Workload Scheduler LoadLeveler uses the security and auditability features of the AIX operating system. The customer is responsible for evaluation, selection, and implementation of security features, administrative procedures, and appropriate controls in application systems and communication facilities.

Back to topBack to top
Top rule
Software Services
Bottom rule

IBM Software Services has the breadth, depth, and reach to manage your services needs. You can leverage the deep technical skills of our lab-based, software services team and the business consulting, project management, and infrastructure expertise of our IBM Global Services team. Also, we extend our IBM Software Services reach through IBM Business Partners to provide an extensive portfolio of capabilities. Together, we provide the global reach, intellectual capital, industry insight, and technology leadership to support a wide range of critical business needs.

To learn more about IBM Software Services or to contact a Software Services sales specialist, visit

Back to topBack to top
Top rule
Ordering information
Bottom rule

Charge metric
                 Part number
Program name     or PID number    Charge metric

Tivoli Workload
LoadLeveler       5765-L50        Per processor core - small,
  for AIX                          medium, or large processor group
                                   including one year SWMA
1-year SWMA:      5660-LLV        Per processor core - small,
 Registration                      medium, or large processor group
 and Renewal
1-year SWMA:      5661-LLV        Per processor core - small,
 After license                     medium, or large processor group
3-year SWMA:      5662-LLV        Per processor core - small,
 Registration                      medium, or large processor group
3-year SWMA:      5663-LLV        Per processor core - small,
 Renewal                           medium, or large processor group
3-year SWMA:      5664-LLV        Per processor core - small,
 After license                     medium, or large processor group


A processor (commonly called a CPU or core) is the unit of measure by which this program is licensed. It is a functional unit within a computing device that interprets and executes instructions. A processor consists of at least an instruction control unit and one or more arithmetic or logic unit. With multicore technology, each core is considered a processor. A Proof of Entitlement (PoE) must be obtained for the appropriate number of processors based on the level of all processor cores activated and available for use by the program on the server.

5765-L50 - TWS LoadLeveler for AIX

Basic license one-time charge

Feature                                                    Feature
description                                                number
Small per processor                                        0001
Medium per processor                                       0002
Large per processor                                        0003

Note: When configuring the 9125-F2C (775), the number of active processors is 256. Since some fulfillment systems have an ordering limitation quantity of 250, the initial order will default to the maximum 250 quantity and a second order will need to be placed for a quantity of 6.

This software license includes 1-year Software Maintenance.

Extending coverage for a total of three years from the date of acquisition may be elected. Order the program number, feature number, and quantity to extend coverage for your software licenses. If maintenance has expired, specify the after-license feature number.

Software Maintenance for TWS LoadLeveler for AIX is unchanged from the prior release.

System Program Order (SPO): An order for SPO 5692-A6P is mandatory for shipments of program distribution. The individual licensed program orders are for registration and billing purposes only. No shipment occurs under these orders.

To receive shipment of machine-readable materials the order needs to include SPO 5692-A6P for TWS LoadLeveler for AIX. The individual licensed program order (for example, 5765-L50) must still be ordered but will be for registration and billing purposes only and will not result in shipment of materials.

Program number   Program/Function name                     number

5692-A6P         TWS LoadLeveler for AIX, V5.1              2291

Back to topBack to top
Top rule
Terms and conditions
Bottom rule

The information provided in this announcement letter is for reference and convenience purposes only. The terms and conditions that govern any transaction with IBM are contained in the applicable contract documents such as the IBM International Program License Agreement, IBM International Passport Advantage® Agreement, and the IBM Agreement for Acquisition of Software Maintenance.


IBM International Program License Agreement including the License Information document and Proof of Entitlement (PoE) govern your use of the program. PoEs are required for all authorized use.

This software license includes Software Subscription and Support (also referred to as Software Maintenance).

Agreement for Acquisition of Software Maintenance

The IBM Agreement for Acquisition of Software Maintenance (Z125-6011) agreement applies for Subscription and Support (also referred to as Software Maintenance) and does not require customer signatures.

These programs are licensed under the IBM Program License Agreement (IPLA) and the associated Agreement for Acquisition of Software Maintenance, which provide for support with ongoing access to releases and versions of the program. IBM includes one year of Software Subscription and Support (also referred to as Software Maintenance) with the initial license acquisition of each program acquired. The initial period of Software Subscription and Support can be extended by the purchase of a renewal option, if available. These programs have a one-time license charge for use of the program and an annual renewable charge for the enhanced support that includes telephone assistance (voice support for defects during normal business hours), as well as access to updates, releases, and versions of the program as long as support is in effect.

License Information form number


The program's License Information will be available for review on the IBM Software License Agreement website
Limited warranty applies


Limited warranty

IBM warrants that when the program is used in the specified operating environment, it will conform to its specifications. The warranty applies only to the unmodified portion of the program. IBM does not warrant uninterrupted or error-free operation of the program or that IBM will correct all program defects. You are responsible for the results obtained from the use of the program.

IBM provides you with access to IBM databases containing information on known program defects, defect corrections, restrictions, and bypasses at no additional charge. For further information, consult the IBM Software Support Handbook found at

IBM will maintain this information for at least one year after the original licensee acquires the program (warranty period).

Program technical support

Technical support of a program product version or release will be available for a minimum of three years from the general availability date, as long as your Software Subscription and Support (also referred to as Software Maintenance) is in effect. This technical support allows you to obtain assistance (via telephone or electronic means) from IBM for product-specific, task-oriented questions regarding the installation and operation of the program product. Software Subscription and Support (Software Maintenance) also provides you with access to updates (modifications or fixes), releases, and versions of the program. You will be notified, via announcement letter, of discontinuance of support with 12 months' notice. If you require additional technical support from IBM, including an extension of support beyond the discontinuance date, contact your IBM representative or IBM Business Partner. This extension may be available for a fee.

Money-back guarantee

If for any reason you are dissatisfied with the program and you are the original licensee, you may obtain a refund of the amount you paid for it, if within 30 days of your invoice date you return the program and its PoE to the party from whom you obtained it. If you downloaded the program, you may contact the party from whom you acquired it for instructions on how to obtain the refund.

For clarification, note that for programs acquired under any of IBM's On/Off Capacity on Demand (On/Off CoD) software offerings, this term does not apply since these offerings apply to programs already acquired and in use by you.

Volume orders (IVO)

Yes. Contact your IBM representative.

Passport Advantage applies


Usage restriction

Yes. TWS LoadLeveler includes a web GUI which is provided as sample or source code. As such, this code is not warranted or supported.

Software Subscription and Support applies

Yes. All distributed software licenses include Software Subscription and Support for a period of 12 months from the date of acquisition, providing a streamlined way to acquire IBM software and assure technical support coverage for all licenses. Extending coverage for a total of three years from date of acquisition may be elected.

While your Software Subscription and Support is in effect, IBM provides you assistance for your routine, short duration installation and usage (how-to) questions, and code-related questions. IBM provides assistance via telephone and, if available, electronic access, only to your information systems (IS) technical support personnel during the normal business hours (published prime shift hours) of your IBM support center. (This assistance is not available to your end users.) IBM offers optional Severity 1 assistance 24 hours a day, every day of the year.

For additional details, consult your IBM Software Support Handbook at

Software Subscription and Support does not include assistance for the design and development of applications, your use of programs in other than their specified operating environment, or failures caused by products for which IBM is not responsible under this agreement.

IBM Operational Support Services - SoftwareXcel


Other support

Power Systems SWMA

System i Software Maintenance applies


Variable charges apply


Educational allowance available

Yes. A 15% education allowance applies to qualified education institution customers.

Back to topBack to top
Top rule
IBM Electronic Services
Bottom rule

IBM has transformed its delivery of hardware and software support services to help you achieve higher system availability. Electronic Services is a web-enabled solution that offers an exclusive, no-additional-charge enhancement to the service and support available for IBM servers. These services are designed to provide the opportunity for greater system availability with faster problem resolution and preemptive monitoring. Electronic Services comprises two separate, but complementary, elements: Electronic Services news page and Electronic Services Agent.

The Electronic Services news page is a single Internet entry point that replaces the multiple entry points traditionally used to access IBM Internet services and support. The news page enables you to gain easier access to IBM resources for assistance in resolving technical problems.

The Electronic Service Agent™ is no-additional-charge software that resides on your server. It monitors events and transmits system inventory information to IBM on a periodic, client-defined timetable. The Electronic Service Agent automatically reports hardware problems to IBM. Early knowledge about potential problems enables IBM to deliver proactive service that may result in higher system availability and performance. In addition, information collected through the Service Agent is made available to IBM service support representatives when they help answer your questions or diagnose problems. Installation and use of IBM Electronic Service Agent for problem reporting enables IBM to provide better support and service for your IBM server.

To learn how Electronic Services can work for you, visit

Back to topBack to top
Top rule
Bottom rule

Information on charges is available at

Choose the option entitled Purchase/upgrade tools.

5765-L50  -  Tivoli Workload Scheduler LoadLeveler for AIX
Basic license one-time charge
Feature                                Feature      
description                            number      

Small per processor, plus 1-yr SWMA     0001        
Medium per processor, plus 1-yr SWMA    0002
Large per processor, plus 1-yr SWMA     0003

Pricing terms

Prices in the following PDF prices link are suggested list prices on day of announcement for the U.S. only. They are provided for your information only. Dealer prices may vary, and prices may also vary by country. IBM list price does not include tax or shipping and is subject to change without notice.

ENUS-211-205-List_prices_2011_07_12.PDF ENUS-211-205-List_prices_2011_07_12.PDF

Back to topBack to top
Top rule
Order now
Bottom rule

To order, contact the Americas Call Centers or your local IBM representative, or your IBM Business Partner.

To identify your local IBM representative or IBM Business Partner, call 800-IBM-4YOU (426-4968).

Phone:      800-IBM-CALL (426-2255)
Fax:        800-2IBM-FAX (242-6329)
Mail:       IBM Teleweb Customer Support
  ® Sales Execution Center, Americas North
            3500 Steeles Ave. East, Tower 3/4
            Markham, Ontario
            L3R 2Z1

Reference: RE001

The Americas Call Centers, our national direct marketing organization, can add your name to the mailing list for catalogs of IBM products.

Note: Shipments will begin after the planned availability date.

Power Systems, General Parallel File System, GPFS and Electronic Service Agent are trademarks of IBM Corporation in the United States, other countries, or both.

IBM, Tivoli, LoadLeveler, AIX, POWER7, DB2, PartnerWorld, Passport Advantage and are registered trademarks of IBM Corporation in the United States, other countries, or both.

Other company, product, and service names may be trademarks or service marks of others.

Terms of use

IBM products and services which are announced and available in your country can be ordered under the applicable standard agreements, terms, conditions, and prices in effect at the time. IBM reserves the right to modify or withdraw this announcement at any time without notice. This announcement is provided for your information only. Additional terms of use are located at:

For the most current information regarding IBM products, consult your IBM representative or reseller, or visit the IBM worldwide contacts page

Terms of use

Share this page

Digg Linked In

Contact IBM

Considering a purchase?