Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
// 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.
Hybrid of Client Server and P2P Architecture Both of the architecture are commonly used architecture. However many applications are organized as by brides of the clie
What is a DNS resource record? A resource record is an entry in a name server's database. There are various types of resource records used, containing name-to-address resolutio
explain layered protocol architecture
What are the responsibilities of Application Layer? The Application Layer enables the user, whether human or software, to access the network. It gives user interfaces and suppo
In HTML, a tag shows the browser what to do. When you write an HTML page, you enter tags for lot of reasons -- to change the appearance of text, to show a graphic, or to make a co
what is end to end and host to host?
Speed Up:- Speed up is the ratio of the time required to implement a given program using a definite algorithm on a machine with one processor (i.e. T (1) (where n=1)) to the ti
Q. Explain Types of Redundancy Checks? Parity Check Simple Parity Check Two Dimensional Parity Check / Longitudinal Redundancy Check (LRC) CRC (Cyclic Redund
Q. Explain about Horn Antenna? - Outgoing transmissions broadcast by a stem and deflected outward - Received transmissions collect by a scooped part of the horn and deflecte
1. What advantages and disadvantages does TCP have for live video teleconferencing applications
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd