HP-UX System Administrator's Guide: Overview HP-UX 11i v3 (B3921-90011, September 2010)

Processor Terminology
The HP-UX System Administrator’s Guide uses the following terminology:
NOTE: The items in this list represent an introduction to terminology used throughout the
HP-UX System Administrator's Guide. A more comprehensive list of terms is located in the
“Glossary” (page 109).
Core
Represented in this document by the double-gear symbol above, a
“core,” (formerly referred to as a “CPU”) is an individual processing
unit on a processor chip (see processor). For reasons of clarity,
occasionally this document will refer to a core as a “processing
core”.
Processor
Represented in this document by a solid square surrounding one
or more symbols for a core, a “processor” is a physical piece of
silicon containing one or more cores.
Hardware Threading A hardware technique used in Itanium processors to enhance the
computational performance of a core. Itanium processors are those
used in HP Integrity Servers.
Software Threading A parallel computing technique used by applications and operating
systems to enhance processing efficiency.
Server Formerly referred to as a “system” or “computer”, this document
primarily uses the term “server” to describe the physical cabinet
containing cell boards, processors, memory, and power supplies.
System This document occasionally uses the term “system” to define what
could be a server or a subset of a server (a partition) running an
independent copy of HP-UX. It will also use the term system to
define what could be a server or another type of system (for example
a Windows based PC).
Operating System
Throughout this document, a dotted line surrounding icons for
cores and processors indicates an instance of an operating system
(HP-UX or otherwise).
18 HP-UX Version 3 at a Glance