IBM Systems Magazine, Mainframe - May/June 2015 - 44

TECH CORNER

Figure 1: IBM z13 Microprocessor Pipeline and SMT Operation

can issue to load/store unit 0
simultaneously. The instruction
issue queue and other tracking
structures are dynamically
shared by threads. The data
cache lets data fetched by one
thread to be used by the other
thread, allowing maximum
data sharing benefits between 2
threads. The fixed point, floating
point and SIMD units are mostly
unaware of which thread is
executing in a given cycle.
The number of execution
engines available in z13 allows
very beneficial and efficient
processing during SMT, with the

various markers of threads 0 and
1 intermixed at each cycle of the
pipeline stages in the engines.

SIMD Improves
Processing
The z13 implements a new set of
139 instructions known as SIMD
to improve processing capability
of complex mathematical
models and vector processing.
These SIMD instructions
operate on a new set of vector
registers (VR), quadrupling the
existing architected floatingpoint register size to a set of 32
registers of 128 bits.

44 // MAY/JUNE 2015 ibmsystemsmag.com

SIMD allows a single
instruction to operate on more
than one data element. Each
z Systems* architecture SIMD
instruction can operate on these
VRs containing element sizes
of 8, 16, 32, 64 or 128 bits. For
instance, an "add byte" operation
will simultaneously add 16
bytes of one VR to 16 bytes of
another VR and put the result
into a third VR where each of
the byte operations performs
independently and does not
propagate into any other bytes.
Without SIMD, this will be at least
16 separate steps going over one


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IBM Systems Magazine, Mainframe - May/June 2015

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - May/June 2015

Table of Contents
IBM Perspective: A mainframe built for Generation Z
Editor's Desk: Optimistic future
Partner PoV: Now is the time for multifactor authentication
Infographic: Myths, exaggerations and uncomfortable truths
Currents: TCO for an IBM z13 cloud is lower than an x86 or public cloud, according to an IBM study
R&D: IBM Research is working to better diagnose osteoporosis -- and make computing more economical
Cover Story: Mastering the Mainframe: IBM contest connects millennials to the mainframe and potential employers
Feature: The Millennial Career Guidebook: Six groups and resources to help mainframers starting their careers
Feature: Mainframe Within Reach: IBM provides a rich set of solutions designed to help new mainframe programmers
Tech Showcase: IBM X-Force report reveals challenges and strategies to succeed in the new computing environment
Tech Corner: New IBM z13 chip improves throughput and analytics performance
Solutions: ReACT V4.0; Ivory Service Architect V4.6
Stop Run: Running and fencing keep IBMer active
Reference Point - Global Events, Education, Resources for Mainframe
2015 Mainframe Solutions Edition Product Index
Linux on z E-book
IBM Systems Magazine, Mainframe - May/June 2015 - Intro
IBM Systems Magazine, Mainframe - May/June 2015 - Cover1
IBM Systems Magazine, Mainframe - May/June 2015 - Cover2
IBM Systems Magazine, Mainframe - May/June 2015 - 1
IBM Systems Magazine, Mainframe - May/June 2015 - Table of Contents
IBM Systems Magazine, Mainframe - May/June 2015 - 3
IBM Systems Magazine, Mainframe - May/June 2015 - 4
IBM Systems Magazine, Mainframe - May/June 2015 - IBM Perspective: A mainframe built for Generation Z
IBM Systems Magazine, Mainframe - May/June 2015 - Editor's Desk: Optimistic future
IBM Systems Magazine, Mainframe - May/June 2015 - 7
IBM Systems Magazine, Mainframe - May/June 2015 - Partner PoV: Now is the time for multifactor authentication
IBM Systems Magazine, Mainframe - May/June 2015 - 9
IBM Systems Magazine, Mainframe - May/June 2015 - Infographic: Myths, exaggerations and uncomfortable truths
IBM Systems Magazine, Mainframe - May/June 2015 - Currents: TCO for an IBM z13 cloud is lower than an x86 or public cloud, according to an IBM study
IBM Systems Magazine, Mainframe - May/June 2015 - 12
IBM Systems Magazine, Mainframe - May/June 2015 - 13
IBM Systems Magazine, Mainframe - May/June 2015 - 14
IBM Systems Magazine, Mainframe - May/June 2015 - 15
IBM Systems Magazine, Mainframe - May/June 2015 - R&D: IBM Research is working to better diagnose osteoporosis -- and make computing more economical
IBM Systems Magazine, Mainframe - May/June 2015 - 17
IBM Systems Magazine, Mainframe - May/June 2015 - 18
IBM Systems Magazine, Mainframe - May/June 2015 - 19
IBM Systems Magazine, Mainframe - May/June 2015 - Cover Story: Mastering the Mainframe: IBM contest connects millennials to the mainframe and potential employers
IBM Systems Magazine, Mainframe - May/June 2015 - 21
IBM Systems Magazine, Mainframe - May/June 2015 - 22
IBM Systems Magazine, Mainframe - May/June 2015 - 23
IBM Systems Magazine, Mainframe - May/June 2015 - Feature: The Millennial Career Guidebook: Six groups and resources to help mainframers starting their careers
IBM Systems Magazine, Mainframe - May/June 2015 - 25
IBM Systems Magazine, Mainframe - May/June 2015 - 26
IBM Systems Magazine, Mainframe - May/June 2015 - 27
IBM Systems Magazine, Mainframe - May/June 2015 - 28
IBM Systems Magazine, Mainframe - May/June 2015 - 29
IBM Systems Magazine, Mainframe - May/June 2015 - Feature: Mainframe Within Reach: IBM provides a rich set of solutions designed to help new mainframe programmers
IBM Systems Magazine, Mainframe - May/June 2015 - 31
IBM Systems Magazine, Mainframe - May/June 2015 - 32
IBM Systems Magazine, Mainframe - May/June 2015 - Tech Showcase: IBM X-Force report reveals challenges and strategies to succeed in the new computing environment
IBM Systems Magazine, Mainframe - May/June 2015 - 34
IBM Systems Magazine, Mainframe - May/June 2015 - 35
IBM Systems Magazine, Mainframe - May/June 2015 - 36
IBM Systems Magazine, Mainframe - May/June 2015 - 37
IBM Systems Magazine, Mainframe - May/June 2015 - 38
IBM Systems Magazine, Mainframe - May/June 2015 - 39
IBM Systems Magazine, Mainframe - May/June 2015 - 40
IBM Systems Magazine, Mainframe - May/June 2015 - 41
IBM Systems Magazine, Mainframe - May/June 2015 - Tech Corner: New IBM z13 chip improves throughput and analytics performance
IBM Systems Magazine, Mainframe - May/June 2015 - 43
IBM Systems Magazine, Mainframe - May/June 2015 - 44
IBM Systems Magazine, Mainframe - May/June 2015 - 45
IBM Systems Magazine, Mainframe - May/June 2015 - 46
IBM Systems Magazine, Mainframe - May/June 2015 - Solutions: ReACT V4.0; Ivory Service Architect V4.6
IBM Systems Magazine, Mainframe - May/June 2015 - Stop Run: Running and fencing keep IBMer active
IBM Systems Magazine, Mainframe - May/June 2015 - Cover3
IBM Systems Magazine, Mainframe - May/June 2015 - Cover4
IBM Systems Magazine, Mainframe - May/June 2015 - Reference Point - Global Events, Education, Resources for Mainframe
IBM Systems Magazine, Mainframe - May/June 2015 - RF2
IBM Systems Magazine, Mainframe - May/June 2015 - Linux on z E-book
IBM Systems Magazine, Mainframe - May/June 2015 - L2
IBM Systems Magazine, Mainframe - May/June 2015 - L3
IBM Systems Magazine, Mainframe - May/June 2015 - L4
IBM Systems Magazine, Mainframe - May/June 2015 - L5
IBM Systems Magazine, Mainframe - May/June 2015 - L6
IBM Systems Magazine, Mainframe - May/June 2015 - L7
IBM Systems Magazine, Mainframe - May/June 2015 - L8
IBM Systems Magazine, Mainframe - May/June 2015 - L9
IBM Systems Magazine, Mainframe - May/June 2015 - L10
IBM Systems Magazine, Mainframe - May/June 2015 - L11
IBM Systems Magazine, Mainframe - May/June 2015 - L12
IBM Systems Magazine, Mainframe - May/June 2015 - L13
IBM Systems Magazine, Mainframe - May/June 2015 - L14
IBM Systems Magazine, Mainframe - May/June 2015 - L15
IBM Systems Magazine, Mainframe - May/June 2015 - L16
IBM Systems Magazine, Mainframe - May/June 2015 - L17
IBM Systems Magazine, Mainframe - May/June 2015 - L18
IBM Systems Magazine, Mainframe - May/June 2015 - L19
IBM Systems Magazine, Mainframe - May/June 2015 - L20
IBM Systems Magazine, Mainframe - May/June 2015 - L21
IBM Systems Magazine, Mainframe - May/June 2015 - 2015 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - May/June 2015 - SE2
IBM Systems Magazine, Mainframe - May/June 2015 - SE3
IBM Systems Magazine, Mainframe - May/June 2015 - SE4
IBM Systems Magazine, Mainframe - May/June 2015 - SE5
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