Automatic Binary Optimizer for z/OS V2.1 delivers the following enhancements:

• Support for exploiting z15 through the ARCH(13) option
• Less system resource requirements, decrease in CPU resources and memory, to optimize already compiled COBOL programs
• Ability to generate optimized programs with additional performance gains on IBM Z hardware
• Output from the IBM Run Time Instrumentation Profiler tool that is enhanced to clearly summarize and display the profiling results

The price metric for Automatic Binary Optimizer for z/OS V2.1 is execution-based, sub-capacity licensing. Automatic Binary Optimizer for z/OS V2.1 generates the SMF 89 records, and you can use the IBM Sub-Capacity Reporting Tool (SCRT) V27.1.2 or later to see Automatic Binary Optimizer for z/OS in the SCRT.

Automatic Binary Optimizer for z/OS, V2.1 delivers additional performance improvements in the generated optimized COBOL programs. Areas of improved performance include programs with:

• INITIALIZE statements
• Packed and zoned decimal arithmetic statements
• INSPECT statements
• Long or variable MOVE operations
• Long or variable comparison operations
• Numeric editing statements
• Dynamic call statements
• Linkage section data items
• STRING statements

Automatic Binary Optimizer for z/OS, V2.1 provides reductions in resource usage. Significantly less system resources that includes memory usage and CPU time, is required by Version 2.1 to optimize load modules as compared to previous releases of Automatic Binary Optimizer for z/OS. With Version 2.1, compute-intensive applications can deliver additional performance when compared to Version 1.3. These improvements increase the return on investment of Automatic Binary Optimizer for z/OS.

Automatic Binary Optimizer for z/OS, V2.1 is easier to use with the implementation of additional usability features. Additional usability features include:

• Improvements to the IBM Run Time Instrumentation Profiler tool. This helps identify COBOL modules that are good candidates for optimization with the Automatic Binary Optimizer for z/OS. The profiling information is improved to more clearly summarize and display the profiling results.
• Improvements to the listings to include the instructions from the value clause initialization section of the input compiled program.
• Support for optimization of modules that contain COBOL programs that were previously compiled with the CMPR2 option.

You can always find the latest Automatic Binary Optimizer for z/OS documentation (online and PDF files) in the Automatic Binary Optimizer for z/OS documentation library at https://www.ibm.com/support/pages/ibm-automatic-binary-optimizer-zos-documentation-library. 

If you have any comments regarding the Automatic Binary Optimizer for z/OS documentation, please send them to compinfo@ca.ibm.com.