Glossary of NCCS Terminology
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
AKT (Authentication Key Token) - a hardware security
device issued to NCCS users which
generates a sequence of numbers
used to form part of a one-time-use
passcode.
Computational
Project - (formerly known as a "Sponsor
Code Account") a five-character
code representing a PI's research effort.
DIMM (dual inline memory
module) - a circuit board with
a 64-bit path to the memory module.
Division Code - a three-character code
which groups Computational Projects by the organization
under which their PIs work.
Division Representative - an individual
who facilitates interaction between the division and the NCCS.
login
shell - software interface through
which users authenticate to access
NCCS computing systems.
LDAP (Lightweight Directory Access Protocol)
- is an application protocol for querying and modifying directory services running over TCP/IP. LDAP is used by the NCCS for access authentication to NCCS computing resources. Currently an LDAP password is necessary for access to the NCCS Linux Networx (discover) Cluster, the NCCS SGI Altix 3700 BX2 (palm/explore) Cluster and the NCCS Portal Web-pages.
LSF (Load Sharing Facility)
- the batch
queueing system used on halem.
man page - short for manual
page, a page of online documentation
for every command, utility, and
library function in UNIX systems,
viewable by issuing the command
man command.
passcode - a combination
of two sequences of numbers that
you use to log in to an NCCS
system. The first sequence is
your four-digit NCCS Personal Identification Number (PIN), and
the second sequence is your NCCS Authentication Key Tokan (AKT)
tokencode, which changes every thirty or sixty seconds (depending on your AKT).
Together these two sequences of
numbers form a one-time-use passcode.
PIN (Personal Identification
Number) - four-digit number assigned to you
by NCCS User Services to be used
in combination with the tokencode
on your AKT
to login to NCCS systems or alone
to access restricted web pages.
Principal Investigator (PI) -
(formerly known as a "Sponsor") an
individual to whom NASA funding
sources have allocated computing
resources on NCCS systems for research.
RAID (redundant array of
inexpensive disks) - a category
of disk drives that use two or
more disks in combination for fault
tolerance and performance.
ssh
keys - a
pair of cryptographic keys, designated
as public key and private key,
that are used to enable passwordless
ssh on NCCS systems. The
private key is generally kept secret,
while the public key may be widely
distributed.
tokencode - the sequence of numbers on an Authentication
Key Token (AKT) which changes every thirty or sixty seconds (depending on your AKT).
user -
an individual with access to NCCS
resources.
userid - a user's three- to eight-character
code that uniquely identifies him
or her on NCCS computing systems.
X11 (X
Window System) - windowing system
for bitmap displays that provides the basic
framework for a GUI environment: drawing and
moving windows on the screen and
interacting with a mouse and keyboard.
In an X11 environment, the traditional
local client vs. remote server
relationship may be reversed. |