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Shmem A one-sided (put/get) inter-process communication interface used on
high-performance parallel systems.
SMP Symmetric MultiProcessor — a computer whose main memory is
shared by more than one processor.
SNMP Simple Network Management Protocol — a protocol used to monitor
and control devices on the Internet.
SQL Structured Query Language — a database language.
TLB Translation Lookaside Buffer — part of the MMU that caches the
result of virtual to physical address translations to minimize
translation times in subsequent accesses to the same page.
URL Uniform Resource Locator — a standard protocol for addressing
information on the World Wide Web.
UTC Coordinated Universal Time
1
— on UNIX systems it is represented as
the time elapsed in seconds since January 1
st
, 1970 at 00:00:00.
Terms
barrier A synchronization point in a parallel computation that all of the
processes must reach before they are allowed to continue.
bisectional bandwidth
The worst case bandwidth across the diameter of the network.
block A thread that blocks without relinquishing the processor until a
specified event occurs.
critical section A section of program statements that can yield incorrect results if
more than one thread tries to execute the section at the same time.
Elan memory The SDRAM on the Elan card.
event A parallel-processing synchronization primitive implemented by the
Elan card.
1
Used to be called GMT.
Glossary-3