Release Notes
Abstract
Hardware and software requirements for installing Machine Learning for IBM z/OS on IBM z.
Content
Machine Learning for IBM z/OS Enterprise Edition is an enterprise machine learning solution that runs on IBM® Z. You can run ML for z/OS as a stand-alone solution or infuse it into your enterprise AI capability as a scalable platform.
Machine Learning for IBM z/OS Core Edition is a lightweight version of MLz providing the essential services that are REST-API-based for machine learning operations including online scoring capabilities on IBM Z. Primarily aiming for AIOps use cases through AI solutions offered by IBM or IBM partners.
What's New in version 3.2.0
- Support multi-user model development environment leveraging JupyterHub.
- Enhanced trustworthy AI capability through improved monitoring configuration and intuitive visualization of explainability results.
- New capability in the Trustworthy AI component to continuously monitor and detect drift in the data distribution of model inputs and outputs, ensuring the model remains accurate and reliable.
- Support multi-class classification model scoring leveraging the on-chip AI accelerator of IBM z16 through Snap ML.
- Utilize Spark libraries as external dependencies for the scoring server to reduce the installation footprint.
- Support IBM Semeru Runtime Certified Edition for z/OS, Version 17, the latest release of Java SDK on z/OS.
- Support for z/OS Spark 3.5.0.
- Support IBM Z Deep Learning Compiler (IBM zDLC) 4.2.0 for ONNX model compilation and scoring.
- Provide the up to date machine learning support for AI Python packages on z/OS.
- Support multi-class classification model scoring leveraging the on-chip AI accelerator of IBM z16 through Snap ML.
- Utilize Spark libraries as external dependencies for the scoring server to reduce the installation footprint.
- Support IBM Semeru Runtime Certified Edition for z/OS, Version 17, the latest release of Java SDK on z/OS.
- New option of configuring a RACF® keyring-based keystore with hardware private key for user authentication and SSL/TLS communication
- Enhancement in support of issuing console messages to reflect when the core and scoring services have started, ended, or encountered an error
- Enhancement to drift-related output under Trustworthy AI
- Enhancement in support of integration with watsonx.ai and watsonx.governance
- Enhancement in support of online scoring timeout for PMML models
- Enhancement to Trustworthy AI in support of ONNX drift and exporting drift results as a PDF
- Dual control enhancement to enable an extra layer of security for online deployment changes
- Enhancement in support of Serving ID that enables inferencing using a user-provided ID in place of the auto-generated deployment ID
- Enhancement in support of Scoring service IP binding
- Support for the z17 Telum II on-chip AI accelerator
What's New in version 3.1.0
- New ability to explain and understand the decisions made by AI models utilizing the MLz built-in Trustworthy AI capabilities.
- Integrate Snap ML library for high speed training and inferencing of popular machine learning models on z/OS, leveraging the on-chip AI accelerator of IBM z16.
- Provide the up-to-date machine learning support for Apache Spark and AI Python packages on z/OS.
- Improve the experience of product configuration and offer different configuration options through WMLz Configuration Tool for both WMLz Core edition and WMLz Enterprise edition.
- Incorporate the inferencing support for Watson Core time-series models.
- Provide the built-in metadata database option for repository service.
- Integrate the Jupyter Notebook server for model training to leverage the integrated Apache Spark runtime and Python runtime on z/OS.
- Enhance the documentation for WMLz services REST APIs.
- zIIP eligibility for Python model training and scoring.
- AT-TLS support for configuration tool, scoring service and Jupyter notebook server for strengthened TLS communication between WMLz services and your client applications.
- Enhanced error handling of the CICS and WOLA scoring interfaces, which enable COBOL applications to retrieve the scoring error code and error message through pre-defined output variables.
- Make the WOLA server name customizable, which enables a flexible deployment and application management for a scoring cluster configuration with instances across multiple LPARs.
- Message ID and content standardization for services and UI.
- Support IBM Z Deep Learning Compiler (IBM zDLC) 4.1.1 for ONNX model compilation and scoring.
- Support z/OS Spark 3.2.4.2.
Maintenance Level
MLz maintenance level | APAR/PTF for IBM Z |
| Machine Learning for IBM z/OS Core Edition V3.2 | 2025 Nov APAR PH68837/PTF UO05782 2025 Aug APAR PH67684/PTF UO04511 2025 Jul APAR PH66196/PTF UO04081 APAR PH66213/PTF UO04082 APAR PH66214/PTF UO04083 2025 Mar APAR PH64998/PTF UO02576 APAR PH65690/PTF UO02574 APAR PH65691/PTF UO02575 2024 Dec APAR PH61600/PTF UI99430 APAR PH64473/PTF UI99431 APAR PH64474/PTF UI99432 |
| Machine Learning for IBM z/OS Enterprise Edition V3.2 | 2025 Nov APAR PH68837/PTF UO05783 APAR PH68898/PTF UO05784 2025 Aug APAR PH67684/PTF UO04512 2025 Jul APAR PH66196/PTF UO04084 APAR PH66213/PTF UO04085 APAR PH66214/PTF UO04086 APAR PH66215/PTF UO04087 APAR PH66216/PTF UO04088 APAR PH66217/PTF UO04089 2025 May APAR PH66197/PTF UO03447 APAR PH66786/PTF UO03448 2025 Mar APAR PH64998/PTF UO02579 APAR PH65690/PTF UO02577 APAR PH65691/PTF UO02578 APAR PH65790/PTF UO02580 APAR PH65791/PTF UO02581 2024 Dec APAR PH61600/PTF UI99433 APAR PH64473/PTF UI99434 APAR PH64474/PTF UI99435 APAR PH64475/PTF UI99436 |
Machine Learning for IBM z/OS Core Edition V3.1 | 2025 Apr APAR PH65296/PTF UO02695 APAR PH65947/PTF UO02696 APAR PH65948/PTF UO02697 APAR PH65949/PTF UO02698 2024 Oct APAR PH63631/PTF UI98777 APAR PH63676/PTF UI98778 APAR PH63677/PTF UI98779 APAR PH63678/PTF UI98780 2024 Jun APAR PH61497/PTF UI97356 APAR PH61549/PTF UI97357 APAR PH61550/PTF UI97358 2023 Dec APAR PH58052/PTF UI94919 APAR PH58544/PTF UI94920 APAR PH58545/PTF UI94921 2023 Oct APAR PH57527/PTF UI94159 APAR PH57746/PTF UI94160 APAR PH57747/PTF UI94161 2023 Sep APAR PH56809/PTF UI93788 APAR PH56840/PTF UI93789 APAR PH56841/PTF UI93790 2023 Aug APAR PH55628/PTF UI93000 APAR PH55968/PTF UI93001 APAR PH55969/PTF UI93002 2023 Jun APAR PH55059/PTF UI92254 |
Machine Learning for IBM z/OS Enterprise Edition V3.1 | 2025 May APAR PH66198/PTF UO03327 APAR PH66602/PTF UO03328 2025 Apr APAR PH65296/PTF UO02699 APAR PH65947/PTF UO02700 APAR PH65948/PTF UO02701 APAR PH65949/PTF UO02702 APAR PH65950/PTF UO02703 2024 Oct APAR PH63631/PTF UI98781 APAR PH63676/PTF UI98782 APAR PH63677/PTF UI98783 APAR PH63678/PTF UI98784 APAR PH63689/PTF UI98785 2024 Jun APAR PH61497/PTF UI97359 APAR PH61549/PTF UI97360 APAR PH61550/PTF UI97361 2023 Dec APAR PH58052/PTF UI94922 APAR PH58544/PTF UI94923 APAR PH58545/PTF UI94924 APAR PH58546/PTF UI94925 APAR PH58547/PTF UI94926 2023 Oct APAR PH57527/PTF UI94162 APAR PH57746/PTF UI94163 APAR PH57747/PTF UI94164 2023 Sep APAR PH56809/PTF UI93791 APAR PH56840/PTF UI93792 APAR PH56840/PTF UI93793 2023 Aug APAR PH55628/PTF UI93003 APAR PH55821/PTF UI93004 APAR PH55968/PTF UI93005 2023 Jun APAR PH55059/PTF UI92255 |
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Document Information
Modified date:
20 November 2025
UID
ibm17003489