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

Labels and label switching, An ATM network is created from interconnected A...

An ATM network is created from interconnected ATM switches. The attachment ports or points can be connected to computers or other ATM switches. As cells reach at an ATM switch, the

Broadcast domain and collision domain, Explain Difference between broadcast...

Explain Difference between broadcast domain and collision domain? Ans) Broadcast Domain Send the packet to all the Present Network IT might be send by the person It mig

Hacking, can u send me a hacking software of face book for free

can u send me a hacking software of face book for free

What is the difference between a hub and a switch, What is the difference b...

What is the difference between a hub and a switch? A hub acts as a multiport repeater. Though, as more and more devices connect to it, it would not be able to efficiently manag

Layer on which layer does l2f, Write the layer on which layer does L2F, PPT...

Write the layer on which layer does L2F, PPTP and L2TP operate?

Determine about the address translation, Determine about the Address Transl...

Determine about the Address Translation When a Web site address or URL is typed in the Web browser, as www.bbc.com and not as a series of numbers, it is essential for the serv

What is nic - networking, NICs Network interface cards, commonly referr...

NICs Network interface cards, commonly referred to as NICs are used to connect a PC to a network. The NIC gives a physical connection among the networking medium and the comput

State the concept of multicast typing, Multicast An identifier for a se...

Multicast An identifier for a set of interfaces (typically belonging to dissimilar nodes). A packet sent to a multicast address is delivered to all interfaces identified by tha

Node selection principle, QUESTION (a) Briefly describe the steps invol...

QUESTION (a) Briefly describe the steps involved in Network Simplex Method. (b) In Radix Heap Algorithm, the technique of buckets is employed. However this idea is an extens

Odd-even transposition algorithem, Algorithm:  Odd-Even Transposition //...

Algorithm:  Odd-Even Transposition //Input: N numbers that are in the unsorted form //Assume that element bi is assigned to pi for I=1 to N { If (I%2 != 0) //i.e Odd

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