A significant part of the material of this glossary was adapted from material originally written by Gregory V. Wilson which appeared as "A Glossary of Parallel Computing Terminology" (IEEE Parallel & Distributed Technology, February 1993), and is being re-printed in the same author's "Practical Parallel Programming" (MIT Press, 1995). Several people have contributed additions to this glossary, especially Jack Dongarra, Geoffrey Fox and many of my colleagues at Edinburgh and Syracuse.
Original version is from NPAC at <URL:http://nhse.npac.syr.edu/hpccgloss/>>Original author: Ken Hawick, firstname.lastname@example.org
See also the index of all letters and the full list of entries (very large)
Sections: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
X.25 (n.) is the CCITT standard protocol for transport-level network services and was originally created for connecting terminals to computers. It provides reliable stream-oriented transmission services and is widely used in Europe. TCP/IP can be implemented as a layer above X.25.
X.400 (n.) is a CCITT protocol for electronic mail. See also X.500.
X.500 (n.) is a CCITT protocol for electronic mail. See also X.400.
XDR (n.) eXternal Data Representation is a standard for machine independent data structures.
XNS (n.) Xerox Networking Standard is Xerox's proprietary networking suite of protocols and is similar to TCP/IP.