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.
In multiprocessing, various processors have to to communicate with each other. Therefore, synchronisation is needed between them. The correctness and performance of parallel execut
QUESTION a) National regulations require the availability of the following services for all IP to PSTN, PSTN to IP, and IP to IP calls. Name any three types of these features
Explain in dteail about the intranet The first Web browser was called Mosaic, and the HTML concept, although not a new one, has accelerated data access and research. In short,
This ICT-related issue that has been raised in the contemporary media, and the article is required to be included as part of the essay: Undertake further research about this top
The application for this assignment is somewhat arti?cial. Normally, an application would not interact directly with IP. Instead, it would create a UDP or TCP socket and interact w
Q. How to connect Remote LANs? - Remote bridges acting as connecting devices to connect LANs and point-to-point networks such as leased telephone lines or ADSL lines
Describe about the noiseless channel A noiseless channel can transmit an arbitrarily large amount of information, no matter how frequently it is sampled. Just send a lot of dat
Q. Example on TCP numbering? Envision a TCP connection is transferring a file of 6000 bytes. The first byte is numbered 10010. What are the sequence numbers for every seg
Determine the concept of placing antenna on hieght First, starting deployment simply placed cells in regions where there was high density of vehicle or human population. Once t
It consists of the communication stacks, distributed directories, authentication services, network time, RPC, Queuing services along with the network OS extensions like the distrib
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