Parallel Computer Architecture

102

CHAPTER

2

Parallel

Programs

Table 2.2 Key Shared Address Space Primitives

Name Syntax

Function

CREATE

CREATE

(p, proc, args) Create p processes that start execut-

ing at procedure proc with

argu-

ments args

Allocate shared data of size bytes

Acquire mutually exclusive access

Release mutually exclusive access

Global synchronization among

number processes: none gets past

BARRIER

until number have arrived

Wait for number processes to

terminate

Wait for flag to be set (spin or

block); used for point-to-point event

synchronization

Set

flag;

wakes up process that is

spinning or blocked on

flag,

if any

G_MALL0C

LOCK

UNLOCK

BARRIER

WAIT_FOR_END ...