IBM GC28-1982-02 Shell Dsh, Host, Call Tree, Ethernet, Execution, File System, Global Variable

distributed

shell

(dsh) .

An

Parallel

System

Support

an

error

in,

or

enhance, a previously installed pro

Programs

command

that

lets

you

issue

commands

2)to

Onea or more

separately

installable,

logically gro

group of hosts in parallelIBM .ParallelSee

System

units

in an installation package.LicSensedalso

Support

Programs

for

AIX:

Command

and

Technical Program

Product and package.

Referencefor

details.

foreign

host

.

Seeremote

host.

domain

name

.

The

hierarchical

identification

of

a

host

Fortran

.

One

of

the

oldest

of

the

modern

programmi

system (in a network), consisting of human-readable

labels,

separated

by

decimals.

languages,

and

the

most

popular

language

for

scienti

and engineering computations. It's name is a

E

contraction FORmulaof

TRANslation . The two most

common Fortran versions are Fortran 77, originally

environment

variable

standardized in 1978, and Fortran 90. Fortran 77 is

.

1.

A

variable

that

describes

the

operating environment of the process. Common

proper subset of Fortran 90.

environment

variables

describe

the

home

directory,

call

tree .

A

graphical

representation of

all

t

function

command

search

path,

and

the

current

time

zone.

2. A

calls

within

an

application,

which

appe

functions

and

variable

that

is

included

in

the

current

software

in the Xprofiler main window. The functions are

environment

and

is

therefore

available

to

any

called

program

that

requests

it.

represented by green, solid-filled rectangles called

function

boxes.

The size and shape of

each

funct

event .

box

indicates its CPU usage. Calls between functio

An

occurrence

of

significance

to

a

task;

for

by

blue

arrows,

called

call

arcs,

are

represented

example,

the

completion

of

an

asynchronous

operation

such

as

an

input/output

operation.

between the function boxes.callSeearcs.also

Ethernet .

function

cycle

.

A

chain

of

calls

in

which

the

first

Ethernet

is

the

standard

hardware

for

be

called. A

function

that

ca

is also the last to

TCP/IP

LANs

in

the

UNIX

marketplace. It

is

a

10

is

not

considered a

function

cycle.

recursively

megabit

per

second

baseband

type

network

that

uses

the

contention

based

CSMA/CD

(collision

detect)

media

decomposition

.

A

method

of

dividing

the

access

method.

functional

work

in a program to exploit parallelism. One divide

executable

the

program

into

independent

pieces

of

functionality

.

A

program

that

has

been

link-edited

and

distributed

to

independent

processors.

therefore

can

be

run

in

a

processor.

which

are

in

contrast

to

data

decomposition

which

distributes

execution .

To

perform

the

actions

specified

same

work over different data to independent

by

a

program

or

a

portion

of

a

program.

processors.

functional parallelism . Refers to situations where expression . In programming languages, a language

parallel tasks specialize in particular work.

construct for computing a value from one or more operands.

G

F

Gauss-Seidel

.

An

iterative

relaxation

method

for

fairness

.

A

policy

in

which

tasks,

threads,

solving

Laplace's equation. It calculates the genera

or

by finding particular solutions to a set o

processes

must

be

allowed

eventual

access

solution

to

a

resource

for

which

they

are

competing. For

discrete points distributed throughout the area i

example,

if

multiple

threads

are

simultaneously

seeking

a

question.

The values of the individual points are

lock,

then

by

averaging

the

values

of nearby points

no

set

of

circumstances

can

cause

any

obtained

thread

to

wait

indefinitely

for

access

to

the

lock.

Gauss-Seidel differs from Jacobi-Seidel in that fo

i+1st

iteration

Jacobi-Seidel

uses only

values calc

FDDI .

Fiber

distributed

data

interface

in

the

ith

iteration.

Gauss-Seidel

uses

a

mixture

(100

Mbit/s

fiber

in

the

ith

and

i+1st

iterations.

optic

LAN).

values

calculated

file

system .

In

the

AIX

operating

system,

global

max

.

The

maximum

value

across

all

the

collection

of

files

and

file

management

processors for a given variable. It is global in

structures

on

a

that it is global to the available processors.

physical or logical mass storage device, such as a

diskette

or

minidisk.

global

variable

. A

variable

defined

in

one portion of

fileset .

1)

An

individually

installable option

computer

program

and

used

in

at

least

one

other

or

update.

Options

provide

specific

function

while

portion of the computer program.

updates

correct

Glossary

of

Terms

and Abbreviations189