Multithreaded program «Hello World!» Write OpenMP- programs, which creates 4 threads, and each thread displays the string «Hello World!». Input: None. Output: 4th row «Hello World!»..
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Multithreaded
Write OpenMP- programs, which creates 4 threads, and each thread displays the string «Hello World!».
Input: None.
Output: 4th row «Hello World!»..
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- calculate the number of memory bytes accessed by this program: void my_dgemv(int n, double* A, double* x, double* y) { #pragma omp parallel { int nthreads = omp_get_num_threads(); int thread_id = omp_get_thread_num(); printf("Hello world: thread %d of %d checking in. \n", thread_id, nthreads); } // insert your dgemv code here. you may need to create additional parallel regions, // and you may want to comment out the above parallel code block that prints out // nthreads and thread_id so as to not taint your timings #pragma omp parallel for // insert your code here: implementation of basic matrix multiply for(int i = 0; i < n; i++) { #pragma omp parallel for for(int j = 0; j < n; j++) { y[i] += A[i * n + j] * x[j]; } } }Using Ubuntu OS (with steps) 1. Create a program that creates and runs 3 threads A, B, C and displays the string “Thread complete” after it has displayed the threads 50 timesIN C LANGUAGE Please write a program to scan an integer number N entered by the user. Create 4 threads andassign them to find ALL prime numbers between 1 to N. NOTE: YOU MAY ASSUME 1 and 2 ARE PRIME
- Assume that you are trying to download a large 2-GB file from the Internet.The file is available from a set of mirror servers, each of which can deliver asubset of the file’s bytes; assume that a given request specifies the startingand ending bytes of the file. Explain how you might use threads to improvethe download time. Also implement same.No screenshot needed, just explain the program and answer the red question to copy program /* Multi-threaded example */ #include <stdio.h> #include <stdlib.h> #include <pthread.h> #define NUM_THREADS 10 /*This data is shared by the thread(s) */ pthread_t tid[NUM_THREADS]; /*This is the thread function */ void *runner(void *param); int main(int argc, char *argv[]) { int i; pthread_attr_t attr; printf("I am the parent thread\n"); /* get the default attributes */ pthread_attr_init(&attr); /* set the scheduling algorithm to PROCESS(PCS) or SYSTEM(SCS) */ pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM); /* set the scheduling policy - FIFO, RR, or OTHER */ pthread_attr_setschedpolicy(&attr, SCHED_OTHER); /* create the threads */ for (i = 0; i < NUM_THREADS; i++) pthread_create(&tid[i], &attr, runner, (void *) i); /* now join on each thread */ for (i = 0; i < NUM_THREADS; i++) pthread_join(tid[i], NULL); printf("I am the parent thread…Write a multithreaded Hello World program using OpenMP. Have each thread say “Hello world” along with its thread ID and the number of threads the program is using.Run the program with as many threads as your computer will allow. Then try setting the thread count to a different number. please post:- The source code.- A screenshot of the program running.- A screenshot of the program running with a different thread count.
- Write complete Java code to define a thread for printing all the Odd Nos from 1 to 5000 which are divisible by 9. Thread must sleep for 5 seconds. Implement the threading using the Runnable java provided Interface. Finally, create three different threads with names ThreadOne, ThreadTwo and ThreadThree in main(). Execute the code in the file where threading is implemented. Apply the Java multithreading exception handling mechanism properlyCourse: Operating Systems write a multi-threadeddirectory copy program. The program will create destination directory and open thesource directory. Then for each file in the source directory it will create a thread. Thethread will copy file from source directory to the destination directory. At the end it willprint the number of files copied. Both the source and destination names will be passed ascommand line arguments. Sample execution is as follows:mtcopy.exe source_dir destination_dirCopied 8 files Note: The answer is availible on chegg.USE PYTHON MULTI THREADING TO COMPLETE DO NOT USE PROCESSES ONLY COMPLETE PART 2 using MULTI THREADING 1) Basic version with two levels of threads (master and slaves) One master thread aggregates and sums the result of n slave-threads where each slavethread sums a different range of values in an array of 1000 random integers (please program to generate 1000 random integers to populate the array). ************ONLY COMPLETE THIS PART BELOW*************** 2) Advanced version with more than two levels of threadsThe master thread creates two slave-threads where each slave-thread is responsible to sum half segment of the array. Each slave thread will fork/spawn two new slave-threads where each new slave-threadsums half of the array segment received by its parent. Each slave thread will return the subtotal to its parent thread and the parent thread aggregates and returns the total to its parent thread. Start with 7 nodes thread tree, when you are comfortable, you can extend it to a full…
- Parallel version 1 (Name this file as Q1_PLV1.java): o Repeat the sequential version using two threads along with the main thread. o Each thread creates a list of 25,000 students with randomly generated GPAs, randomly generated Ages, and sequential IDs. o Each of the two threads then calculates the average GPA and AGE (after creating the lists). o The two threads work in parallel. o The main thread waits for the two threads to finish and then calculates and prints the final average GPA and AGE from what is reported by the individual threads. • Parallel version 2 (Name this file as Q1_PLV2.java): o Repeat the Parallel version1 task using five threads (each is working on 10000 students) along with the main thread. To measure the time your computer takes to complete a certain task: • Read and store the current time (t1) before you start the task (e.g., before creating the lists), • After the task (e.g., after calculating the average), read and store the current time (t2). • The…Write a multi thread C++ code that adds an array of 1000 numbers. This program will be passed a number on the command line and then create threads accordingly. The array should be evenly distributed according to the number of threads. Each thread calculates its sum and then the main thread displays the final sum.The Fibonacci sequence is the series of numbers 0, 1, 1, 2, 3, 5, 8, .... Formally, it can be expressed as: fib0 = 0 fib1 = 1 fibn = fibn−1 + fibn−2 Write a multithreaded program that generates the Fibonacci series using either the Java, Pthreads, or Win32 thread library. This program should work as follows: The user will enter on the command line the number of Fibonacci numbers that the program is to generate. The program will then create a separate thread that will generate the Fibonacci numbers, placing the sequence in data that is shared by the threads (an array is probably the most convenient data structure).When the thread finishes execution, the parent thread will output the sequence generated by the child thread. Because the parent thread cannot begin outputting the Fibonacci sequence until the child thread finishes, this will require having the parent thread wait for the child thread to finish.