Example programmes for parallel systems-adding element, Computer Networking

Assignment Help:

Example Programmes for Parallel Systems

Now we shall complete this with the examples on shared memory programming.

Example 13: Adding elements of an array using two processor int sum, A[ n] ; //shared variables

void main ( ){

int i ;

for (i=0; i

// now create process to be implemented by processor P1

fork(1) add (A,n/2,n-1, sum); // process to add elements from index n/2 to -

1.sum is output variable         // now create process to be implemented by processor

 P0                                                                                           add (A,0,n/2-1, sum);

join 1 ;

printf ("%d", sum);

}

add (int A[ ], int lower, int upper, int sum) {

int sum1=0, i;

 for (i=lower; i<=upper; i++)

sum1=sum1+A[i];

lock sum;

sum=sum+sum1;

unlock sum ;

}

In this program, the last half of the array is passed to processor P1 which adds them. Meanwhile processor P0 adds the first half of the array. The variable sum is locked to avoid inconsistency.


Related Discussions:- Example programmes for parallel systems-adding element

Cnet sliding window protocol, implementing cnet sliding window protocol wit...

implementing cnet sliding window protocol with 6 nodes

Multiplexing - fundamentals of networks, Multiplexing Multiplexing ...

Multiplexing Multiplexing is the set of techniques that allows simultaneous transmission of multiple signals across a single  data like. It  is methods  for efficient utiliza

Distribution system from bss, To Distribution System from BSS We requir...

To Distribution System from BSS We require to identify the AP as the first hop to the destination (B) A will receive an ACK from the AP - indicates frame successfully on

Network design by detailing infrastructure, i have an assigment due and wan...

i have an assigment due and want some one to do my assognment

Physical configurations sonet sdh , Physical Configurations Transport ...

Physical Configurations Transport signal multiplexer de multiplexer. It either  signal from multiple   sources into a STS singles  or de multiplexes and STS signal  into diffe

Determine the term - experimental neuropsychology, Determine the term - Exp...

Determine the term - Experimental neuropsychology This is an approach which uses methods from experimental psychology to uncover the relationship among the nervous system and c

Define the term - graphics interchange format, Define the term - Graphics I...

Define the term - Graphics Interchange Format A type of graphics file found frequently on the .net. A picture of a vice-president, for example, may appear on the Intranet as

Program to load the router with the supplied scripts-ccna, Load the Router ...

Load the Router with the Supplied Scripts Enable ! config term ! hostname Router1 ! enable secret class ! no ip domain-lookup !  interface FastEth

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd