Decimal Floating Point And Z/Os Xl C/C++ Considerations - IBM z13s Technical Manual

Using the capacity provisioning function requires these prerequisites:
TCP/IP connectivity to observed systems
RMF Distributed Data Server must be active
CIM server must be active
Security and CIM customization
Capacity Provisioning Manager customization
In addition, the Capacity Provisioning Control Center must be downloaded from the host and
installed on a PC server. This application is used only to define policies. It is not required for
regular operation.
Customization of the capacity provisioning function is required on the following systems:
Observed z/OS systems: Systems in one or multiple sysplexes that are to be monitored.
For more information about the capacity provisioning domain, see 8.8, "Nondisruptive
upgrades" on page 349.
Runtime systems: Systems where the Capacity Provisioning Manager is running, or to
which the server can fail over after server or system failures.

7.6.6 Decimal floating point and z/OS XL C/C++ considerations

z/OS V1R13 with PTFs or higher is required to use the latest level (11) of the following C/C++
compiler options:
ARCHITECTURE: This option selects the minimum level of system architecture on which the
program can run. Certain features that are provided by the compiler require a minimum
architecture level. ARCH(11) uses instructions that are available on the z13s.
TUNE: This option allows optimization of the application for a specific system architecture,
within the constraints that are imposed by the ARCHITECTURE option. The TUNE level must
not be lower than the setting in the ARCHITECTURE option.
For more information about the ARCHITECTURE and TUNE compiler options, see the z/OS
V1R13.0 XL C/C++ User's Guide, SC09-4767.
Important: Use the previous z Systems ARCHITECTURE or TUNE options for C/C++ programs
if the same applications run on both the z13s and on previous z Systems servers.
However, if C/C++ applications run only on z13s servers, use the latest ARCHITECTURE and
TUNE options to ensure that the best performance possible is delivered through the latest
instruction set additions.
For more information, see Migration from z/OS V1R13 and z/OS V1R12 to z/OS V2R1,
GA32-0889.
7.7 IBM z Advanced Workload Analysis Reporter (zAware)
IBM zAware is designed to offer a real-time, continuous learning, diagnostic, and monitoring
capability. This capability is intended to help you pinpoint and resolve potential problems
quickly enough to minimize their impact on your business. IBM zAware runs analytics in
firmware and intelligently examines the message logs for potential deviations,
inconsistencies, or variations from the norm. Many z/OS environments produce such a large
volume of OPERLOG messages that it is difficult for operations personnel to analyze them
Chapter 7. Software support
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