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

Different models of computation-parallel algorithms, There are various comp...

There are various computational models for representing the parallel computers. In this part, we discuss various models. These models would give a platform for the designing as wel

What is network architecture, What is Network Architecture? When two o...

What is Network Architecture? When two or more computer are linked with one another for the purpose of communicating data electronically, besides physical connection of comput

Verify vlans and trunking - ccna, Verify VLANs and trunking. Use the sh...

Verify VLANs and trunking. Use the show ip interface trunk command on S1 and the show vlan command on S2 to determine that the switches are trunking correctly and the proper VL

Merge sort circuit, First, split the given series of n numbers into two par...

First, split the given series of n numbers into two parts, each consisting of n/2 numbers. After that, recursively split the series into two parts until each number acts as an inde

Network, What are the advantages of logging more information to the alerts ...

What are the advantages of logging more information to the alerts filestion #Minimum 100 words accepted#

Write the statement which is true regarding full duplex, Allows for transmi...

Allows for transmission and receiving of data concurrently

Configure the physical topology- ccna, Configure the Physical Topology ...

Configure the Physical Topology Step 1: Cable the network. Refer to the figure and table below for the essential cables. Step 2: Physically connect lab devices. C

Design a banking network, You have been asked to design a Banking Network w...

You have been asked to design a Banking Network with two primary types of locations.  Branches that will have 3 subnets, one /25 subnet one /26 subnet for ABMS and one /26 s

Create and simulate a network - netml system, Create and simulate a network...

Create and simulate a network similar to the one shown here, using the NetML system. The network is a little more complex, as depicted at the right. There is an extra node

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