IBM CPLEX Optimizer for z/OS, V12.8 delivers performance and usability improvements, which help organizations deploy mathematical optimization capabilities in mainframe environments

IBM Europe Software Announcement ZP18-0063
March 6, 2018

Table of contents
Key prerequisitesKey prerequisitesTechnical informationTechnical information
Planned availability datePlanned availability dateOrdering informationOrdering information
DescriptionDescriptionTerms and conditionsTerms and conditions
Product positioningProduct positioningPricesPrices
Program numberProgram numberAnnouncement countriesAnnouncement countries

At a glance

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IBM® CPLEX® Optimizer for z/OS®, V12.8:

  • Delivers improvements in linear programming, mixed integer programming, quadratic programming, and mixed integer quadratic program performance
  • Includes new modeling assistance
  • Contains new facilities for recording information and new call-back mechanism

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CPLEX Optimizer for z/OS provides flexible, high-performance mathematical programming solvers for linear programming, mixed integer programming, quadratic programming, and quadratically-constrained programming problems. CPLEX Optimizer for z/OS includes interfaces in the C and C++ programming languages.

CPLEX Optimizer for z/OS V12.8 incorporates enhancements designed to address requirements in several domains, including:

  • Performance improvements across the model types that CPLEX supports
  • New modeling assistance in the form of warnings about suspicious data and modeling constructs
  • Records search information for CPLEX that reproduces exact algorithmic behavior

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Key prerequisites

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An IBM z13® server and IBM z®/OS V2.1, or later. See the Technical information section for details.

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Planned availability date

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March 9, 2018

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CPLEX Optimizer for z/OS, V12.8 is designed to include the following new functions:

  • Significant performance increases for mixed integer programming and mixed integer quadratic program problem classes.
    • Engine users benefit from speedups without changing a single line of code, simply by using the new libraries in their applications or through the IDE. A speedup is manifested when the user's model solves faster than previously.
  • New modeling assistance in the form of warnings about suspicious data and modeling constructs.
    • With this warning feature switched on, CPLEX scans the model and attempts to identify various categories of problems that may have sources in inaccurate or unstable data, which may result in scalability or other numerical problems. Any problems discovered can then be dealt with by the user.
  • Records search information for CPLEX that reproduces exact algorithmic behavior.
    • Users can record all the calls to the CPLEX APIs so this information can be shared with IBM in order to reproduce abnormal behavior.
  • Users are able to use a new call-back mechanism without degrading performance.

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Product positioning

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The ability to deploy mathematical optimization capabilities in mainframe environments can help facilitate competitive advantage by helping companies:

  • Reduce IT cost and maintenance requirements through a simplified architecture that is designed to balance costs with the agility to enable:
    • Enhanced data security and reliability
    • Maximum leveraging of existing IT assets
    • Greater end-to-end performance and scalability of business value solutions
  • Transform data analytics insights into explicit recommendations for action to help enable:
    • Effective risk management strategies
    • Consistent customer experiences
    • Continuous performance improvement of financial assets
  • Enable seamless deployment of customer-centric, prescriptive analytic applications, and business value solutions to help:
    • Proactively support emerging customer demands
    • Drive higher return on assets
    • Maintain competitive advantage

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Reference information

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For more information, see

  • Software Announcement ZP13-0234, dated April 23, 2013.
  • Software Announcement ZP14-0149, dated April 15, 2014.
  • Software Announcement ZP17-0091, dated February 28, 2017.

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Program number

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Program number VRM Program name
5655-Y21 12.8.0 IBM CPLEX Optimizer for z/OS

Product identification number

Program PID number Subscription and Support PID number
5655-Y21 5655-Y25

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Offering Information

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Product information is available on the IBM Offering Information website.

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No change to the publications information as a result of this announcement.

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Global Technology Services

Contact your IBM representative for the list of selected services available in your country, either as standard or customized offerings for the efficient installation, implementation, or integration of this product.

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Technical information

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Specified operating environment

Hardware requirements

z13® server

Software requirements
  • Operating system: z/OS V2.1, or later
  • Compiler: IBM z/OS XL C/C++ V2R1, or later

After the general availability date, the latest information can be found through the Detailed System Requirements for IBM CPLEX Optimizer for z/OS website.

Planning information


CPLEX Optimizer for z/OS is shipped through Customized Offerings on 3590 1/2-inch tape cartridge. Also included in the package:

  • Program Directory: GI11-9604
  • License Information Booklet: GC34-2732-05

Security, auditability, and control

CPLEX Optimizer for z/OS uses the security and auditability features of the 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.

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Ordering information

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This IBM Workstation Software product is being announced as a dual-pipe offering, and is available for ordering by program and feature number or by part number.

When ordering by part numbers, this product can be obtained through IBM Passport Advantage®. Contact your IBM representative or IBM Business Partner Reseller and Distributors for Workstation Software.

For more information, contact your IBM Sales Specialist or IBM Business Partner, or go to the Passport Advantage website.

This product is only available through Passport Advantage. It is not available as shrinkwrap.

Product group: Hybrid Cloud and Managed Services

Product: 5655-Y21

Product category: Hybrid Cloud Analytics Private Cloud

This software license includes Software Maintenance, previously referred to as Software Subscription and Technical Support.

Maintenance PID description

Maintenance PID number Description
5655-Y25 IBM CPLEX Optimizer for z/OS Service and Support

Software license includes 1 year Software Maintenance.

Charge metric

Program name Part number or PID number Charge metric
IBM CPLEX Optimizer for z/OS 5655-Y21 Per Value Unit
IBM CPLEX Optimizer for z/OS Service and Support 5655-Y25 Per Value Unit

The programs in this announcement all have Value Unit-Based pricing.

Program number Program name Value Unit exhibit
5655-Y21 IBM CPLEX Optimizer for z/OS VUE007
5655-Y25 IBM CPLEX Optimizer for z/OS Service and Support VUE007

On/Off Capacity on Demand (CoD)

Entitlement identifier Description License option/Pricing metric
S016ZPM IBM CPLEX Optimizer for z/OS Basic OTC, Per MSU-day TUC

Customized Offerings

Product deliverables are shipped only through CBPDO, ServerPac, SystemPac, FunctionPac, and ProductPac®.

All of these customized offerings are offered for internet delivery in countries where Shopz product ordering is available. Internet delivery reduces software delivery time and allows you to install software without the need to handle tapes. For more details on internet delivery, go to the Help section on the Shopz website.

You choose the delivery method when you order the software. IBM recommends internet delivery. In addition to internet and DVD, the supported tape delivery options include:

  • 3590
  • 3592

Most products can be ordered in ServerPac, SystemPac, FunctionPac, and ProductPac the month following their availability in CBPDO. z/OS can be ordered through CBPDO, ServerPac, and SystemPac at general availability. Many products will also be orderable in a Product ServerPac without also having to order the z/OS operating system or subsystem. Shopz and CFSW will determine the eligibility based on product requisite checking. For more details on the product ServerPac, go to the Help section on the Shopz website.

For additional information about the Product ServerPac option, see Software Announcement ZP12-0358, dated July 7, 2012.

Production of software product orders will begin on the planned general availability date.

  • CBPDO shipments will begin one week after general availability.
  • ServerPac, SystemPac, FunctionPac and ProductPac shipments will begin four weeks after general availability due to additional customization, and data input verification.

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Terms and conditions

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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.

This product is only available through Passport Advantage.


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) 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. 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. IBM z Systems® Operational Support Services - SoftwareXcel is an option if you desire added services. IBM z Systems Operational Support Services - Support Line is an option if you desire added services.

License Information number


See the License Information documents page on the IBM Software License Agreement website for more information.

License Information Booklet: GC34-2732-05

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, see the IBM Software Support Handbook.

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

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 (1) for programs acquired under the IBM International Passport Advantage® offering, this term applies only to your first acquisition of the program and (2) 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)


Passport Advantage applies

Yes, information is available on the Passport Advantage and Passport Advantage Express® website.

Software Subscription and Support applies

Yes. Software Subscription and Support, also referred to as Software Maintenance, is now included in the Passport Advantage Agreement. Installation and technical support for the products announced in this announcement is provided by the Software Subscription and Support offering of the IBM International Passport Advantage Agreement. This fee service enhances customer productivity by providing voice or electronic access into the IBM support organizations.

IBM includes one year of Software Subscription and Support 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.

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 by 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 users.) IBM provides Severity 1 assistance 24 hours a day, every day of the year. For additional details, see the IBM Software Support Handbook. 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.

For additional information about the Passport Advantage Agreement, go to the Passport Advantage and Passport Advantage Express website.

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.

Variable charges apply


Educational allowance available

Yes. When ordering through the program number process, a 15% education allowance applies to qualified education institution customers.

Education software allowance program applies when ordering through the program number process.

For the part number ordering process, special education prices are available for qualified customers through Passport Advantage.

ESAP available

Yes, to qualified customers.

Multi-Version Measurement

Multi-Version Measurement (MVM) replaces the previously announced Migration Grace Period time limit of six months and allows unlimited time for clients to run more than one eligible version of a software program. Clients may run multiple versions of a program simultaneously for an unlimited duration during a program version upgrade. Clients may also choose to run multiple versions of a program simultaneously for an unlimited duration in a production environment. MVM does not extend support dates for programs withdrawn from service.

For more information about MVM, including requirements for qualification, see the MVM web page. For a list of eligible programs, see the IPLA Execution-Based web page.

On/Off CoD

To be eligible for On/Off CoD pricing, you must be enabled for temporary capacity on the corresponding hardware, and the required contract, Amendment for System i® and System p Temporary Capacity On Demand - Software (Z125-6907), must be signed prior to use.

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Statement of good security practices

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IT system security involves protecting systems and information through intrusion prevention, detection, and response to improper access from within and outside your enterprise. Improper access can result in information being altered, destroyed, or misappropriated or can result in misuse of your systems to attack others. Without a comprehensive approach to security, no IT system or product should be considered completely secure and no single product or security measure can be completely effective in preventing improper access. IBM systems and products are designed to be part of a regulatory compliant, comprehensive security approach, which will necessarily involve additional operational procedures, and may require other systems, products, or services to be most effective.

Important: IBM does not warrant that any systems, products, or services are immune from, or will make your enterprise immune from, the malicious or illegal conduct of any party.

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For all local charges, contact your IBM representative.

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Announcement countries

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All European, Middle Eastern, and African countries, except Islamic Republic of Iran, Sudan, and Syrian Arab Republic.


IBM, CPLEX, z/OS, IBM z13, IBM z, Global Technology Services, Passport Advantage, Express, z13, ProductPac, IBM z Systems and System i 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.

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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. Reference to other products in this announcement does not necessarily imply those products are announced, or intend to be announced, in your country. Additional terms of use are located at

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