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

Diiferentiate between html and http, Diiferentiate between HTML and HTTP ...

Diiferentiate between HTML and HTTP Hypertext Markup Language (HTML) The language used in writing pages for the World Wide Web. Knowledge of not HTML is not necessary f

Matrix computation and multiplication, In the following section, we shall d...

In the following section, we shall discuss the algorithms for solving the matrix multiplication difficulty using the parallel models. Matrix Multiplication Problem Let ther

General middleware in client server environment, What is General Middleware...

What is General Middleware in client server environment? Ans) It having the communication stacks, distributed directories, authentication services, network time, RPC, Queuing se

List the advantages of arcnet, List the advantages of ARCNet. Here are ...

List the advantages of ARCNet. Here are some of the ARCNet's benefits: 1.  It is extremely reliable. 2. ARCNet is simple to install and troubleshoot. 3. It has an exce

Describe network security and internetworking security, Q. Describe Network...

Q. Describe Network security and Internetworking security? Network Security - Layers 5-7 - Securing the localized private domain. Network Administration, File Permissions

Explain the classification according to level of processing, Classification...

Classification according to level of processing According to this categorization computer operations are classified like arithmetic operations and instruction execution. Subseq

Two routers running igrp to communicate their routes, What must be true for...

What must be true for two Routers running IGRP to communicate their routes? Ans) Similar autonomous system number

Advantages and disadvantages of public and private network, The disadvantag...

The disadvantages and advantages of Private and Public networks are shown in the table below:

Comparison of connection-oriented and connectionless, CONNECTION-ORIENTED: ...

CONNECTION-ORIENTED: Accounting is simpler. Application can learn of network causes immediately. CONNECTIONLESS: It has fewer load. It is easier to cre

Routing by rumor, What is the major issue with routing by rumor?

What is the major issue with routing by rumor?

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