The following z13™ functions
have considerations when you are planning for migration and exploitation.
For PTF information, see the Notes for Table 1.
- Large Systems Performance Reference (LSPR) method. LSPR
is designed to provide comprehensive z/Architecture® processor capacity
ratios for different configurations of central processors (CPs) across
a wide variety of system control programs and workload environments.
- Simultaneous multithreading (SMT). Incremental throughput
is achieved partly because the new processor chip offers intelligently
implemented 2-way simultaneous multithreading. Simultaneous multithreading
allows two active instruction streams per core, each dynamically sharing
the core's execution resources. SMT is available on the z13 for workloads running on the Integrated Facility
for Linux (IFL) and the IBM® z Integrated Information Processor
(zIIP).
- CFCC Level 20 support. CFCC Level 20 supports
the Coupling Facility use of Large Memory to improve availability
for larger CF cache structures and data sharing performance with larger DB2® Group Buffer Pools. This support
removes inhibitors to using large CF cache structures, enabling use
of Large Memory to appropriately scale to larger DB2 Local Buffer Pools and Group Buffer Pools
in data sharing environments.
- Coupling links. IBM z13™ introduces new PCIe (Integrated Coupling Adapter –
ICA SR) based Short Reach coupling links using a new CHPID type, CS5.
ICA-SR links can only connect a z13 CPC
to a z13 CPC. IBM z13 CPC now supports 256 Links. A single z/OS® or a CF Image still supports
a maximum of 128 Links. When displaying STP (DISPLAY ETR) from a z/OS image, information is provided
for the entire CPC. If greater than 128 links are defined on an IBM z13, the z/OS support must be installed on all z/OS releases running on that IBM z13, so that greater-than-128-links
information, including STP Timing information, can be displayed.
- SIMD. z/OS V2R1
is designed to support the new vector extension facility (Single Instruction
Multiple Data, SIMD) instructions available on IBM z13 servers. SIMD provides a powerful
framework for development of new Business Analytics workloads, porting
math-intensive workloads from other platforms, and accelerating Business
Analytics workloads on IBM z13.
High Data Intensity, High Compute Intensity, Predictive IT Analytics,
Advanced Security/Crypto, BI Reporting, Perspective Analytics, and
Next-Gen Data Warehousing are some of the workloads that might benefit
from Data Parallelism (SIMD). z/OS support
includes enablement of Vector Registers (VR) on IBM z13, Mathematical Acceleration Subsystem
(MASS), and Automatically Tuned Linear Algebra Software (ATLAS) support,
as well as LE enablement for C runtime functions.
- Cryptographic Enhancements. Cryptographic enhancements
for z/OS V2R1 on z13 servers include:
- VISA Format Preserving Encryption (VFPE). Support for VFPE algorithms
in CCA-based callable services helps legacy databases to contain encrypted
data of sensitive fields without having to restructure the database
or applications. This support will rely on the Crypto Express5S coprocessor.
- Greater than 16 Domain support. This support allows
a cryptographic coprocessor to be shared across more than 16 domains,
up to the maximum number of LPARs on the system. This support relies
on enhanced firmware available with a minimum microcode level for
the Crypto Express5S coprocessor.
- Trusted Key Entry (TKE) 8.0 Licensed Internal Code (LIC). This
support includes: Crypto Express5S Coprocessor support, FIPS Certified
Smart Card, Crypto Coprocessors with more than 16 domains, a full-function
migration wizard for EP11 coprocessors, new master key management
functions, a Smart Card Readers Available indicator, a Configure Displayed
Hash Size utility, ECC Authority Signature Keys, print capability,
new features in the Crypto Node Management (CNM) utility, ENC-Zero
verification pattern for 24-byte DES operational keys, and usability
enhancements.
See Decide on the steps you will take for your migration to
a z13 server in Actions you can take before you order a z13 server
- IBM zAware system. IBM zAware is designed to offer
a near real-time, continuous learning, and diagnostics capability
intended to help you pinpoint and resolve potential problems quickly
enough to minimize impacts to your business. The new version of IBM zAware introduces a new generation
of technology with improved analytics to provide better results.
After you order a z13 you can
prepare to set up an IBM zAware
environment by defining the IBM zAware
logical partition, defining and using OPERLOG log streams, and network
definitions to connect the z/OS LPAR
to the zAware LPAR. For more information, see IBM System
z Advanced Workload Analysis Reporter (IBM zAware) Guide, (SC27-2623) and z/OS MVS Setting Up a Sysplex.
- Flash Express®.
With this support, z/OS is
designed to help improve system availability and responsiveness by
using Flash Express across
transitional workload events such as market openings, and diagnostic
data collection. z/OS is also
designed to help improve processor performance by supporting middleware
exploitation of pageable large (1 MB) pages. This support requires
the Flash Express hardware
feature.
- 2GB Large Page support. This support includes
support for 2 GB large fixed pages.
- New z/Architecture instructions:
XL C/C++ ARCH(11) and TUNE(11) parameters. This function provides
new hardware instruction support, SIMD (Vector support, including
data), Decimal Floating Point packed conversion facility support,
performance improvements (machine model scheduling and code generation
updates), and Single Instruction Multiple Data (SIMD) instruction
set and execution, including Business Analytics Vector ProcessingMASS
and ATLAS Library. Unlike prior generations of servers, to use any
of these functions you must download and install the z13 Exploitation Support for z/OS V2.1 XL C/C++ web deliverable.
- FICON® Express16S. FICON Express16S supports a link
data rate of 16 gigabits per second (GBPS) and auto-negotiation to
4 or 8 GBPS for synergy with existing switches, directors, and storage
devices. With support for native FICON,
High Performance FICON for System z® (zHPF), and Fibre
Channel Protocol (FCP), the new FICON Express16S
channel is designed to work with your existing fiber optic cabling
environment. The FICON Express16S
feature running at end-to-end 16 GBPS link speeds will provide reduced
latency for large read/write operations, and increased bandwidth compared
to the FICON Express8S feature.
- FICON Dynamic Routing.
With z13, FICON channels are no longer restricted to
the use of static Storage Area Network (SAN) routing policies for
Inter-Switch Links (ISLs) for cascaded FICON directors.
You will need to ensure that all devices in your FICON SAN support FICON Dynamic Routing before implementing this
feature.
- Storage Area Network Fabric I/O Priority. This new function
on the z13 provides the ability
for z/OS to specify an I/O
priority for the SAN fabric to utilize. This capability allows z/OS to extend the z/OS Work Load Manager (WLM) to manage the SAN
fabric, completing the management of the entire end-to-end flow of
an I/O operation.
- Improved High Performance FICON for System z (zHPF) I/O Execution
at Distance. High Performance FICON for System z (zHPF) has been enhanced
to allow all large write operations (> 64 KB) at distances up to 100
km to be executed in a single round trip to the control unit, thereby
not elongating the I/O service time for these write operations at
extended distances.
- Improved Channel Subsystem (CSS) Scalability. The z13 server has improved the channel
subsystem (CSS) scalability with support for six logical channel subsystems
(LCSSs) which are required to support the eighty-five LPARs for z13, four subchannel sets (to support
more devices per logical channel subsystem), and 32K devices per FICON channel, up from 24K channels
in the previous generation. Additionally, a fourth subchannel set
for each LCSS is provided to facilitate elimination of single points
of failure for storage after a disk failure.
- PCIe and HCD Definitions. z/OS V2R1 HCD (FMID HCS7790) supports full exploitation
for z13 processors (type 2964)
with support of 6 channel subsystems, 4 subchannel sets. To support
PCIe functions for systems that are running on zEC12, zBC12 and z13 processors, HCD has introduced
a new dialog for defining PCIe functions and assigning the functions
to LPARs.
z/OS V1R13 HCD
(HCS7780) supports limited exploitation for z13 processors (type 2964). For PCIE functions,
it is possible to define a complete 2964 processor, including PCIe
functions and the new channel types and capabilities. However, a processor
configuration can be dynamically changed or activated only if it contains
neither PCIe function nor a PNETID attribute. For a software activate
with hardware validation, PCIe functions and the PNETID attribute
are ignored.
IBM recommends
that you define and activate all the new hardware definitions on a z/OS V2R1 system with the appropriate
HCD PTF (APAR OA44294) installed and perform only software activates
(with hardware validation) on lower-level systems.
- Consider the changes in the CPU Measurement Facility
counters. The number of CPU measurement facility counters for z13 remains at 128. Though the structure
of the SMF 113 record does not change, the values, interpretations,
and frequency of certain sections do change; therefore, current tools
that use the data must be updated for the z13.
For
example, consider the following SMF record field:
- SMF113_2_CtrVN2 identifies how to interpret the MT-Diagnostic,
Crypto, and Extended counter sets. As described in The IBM CPU Measurement Facility Extended
Counters Definition for z10 and
z196, SA23-2260, this field is set to 1 (for z10™), 2 (for z196 or z114), 3 (for zEC12 and
zBC12), or 4 (for z13).
Note: As of z/OS V2R1,
if you use the CPU Measurement Facility, IBM recommends
that your installation collect SMF 113 subtype 1 and 2 records. IBM also recommends that products
process SMF 113 subtype 1 records when available because that is where
future enhancements will be made. If subtype 1 records are not available,
products can process subtype 2 records.