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- A ring buffer, or circular queue, is a FIFO data structure of a fixed size N. It is useful for transferring data between asynchronous processes or for storing log files. When the buffer is empty, the consumer waits until data is deposited; when the buffer is full, the producer waits to deposit data. Develop an API for a RingBuffer and an implementation that uses an array representation (with circular wrap-around)Write a program that simulates a toy paging system that uses the WSClock algorithm. The system is a toy in that we will assume there are no write references (not very realistic), and process termination and creation are ignored (eternal life). The inputs will be: The reclamation age threshhold The clock interrupt interval expressed as number of memory references A file containing the sequence of page references Describe the basic data structures and algorithms in your implementation. Show that your simulation behaves as expected for a simple (but nontrivial) input example. Plot the number of page faults and working set size per 1000 memory references. Explain what is needed to extend the program to handle a page reference stream that also includes writes.Allocation Мах Available АВCD АВСD АВСD То T1 T2 T3 0012 0012 1520 1000 1750 1354 2356 0632 0014 0652 0656 Answer the following questions using the banker's algorithm: a. What is the content of the matrix Need? b. Is the system in a safe state? c. If a request from thread T1 arrives for (0,4,2,0), can the request be granted immediately? 2)
- to the code below by using javaScript! Compare two approaches to partition in quickselect: Sedgewick and Lumoto . Assume that the numbers range from 0 to 100. Use the recursive version of quickselect. Always select the median at |1+r/2|Regardless of even/odd array size.you must collect both operation count and timing data. Check if both measurements do indeed have the same order of growth. please read it carfully and solve it by folowing all the requiremntsGiven an array A[0..n-1], write the following versions of CUDA programs with and without using shared memory. Each thread splits and merges two subarrays of size n/p in each iterations. Use shared memory and multiple blocks. Experiment to get best performances.We can generalize two-pass multiway merge-sort to use more than two passes. On the first pass, we divide the file into as many groups as we can merge in one pass. Then, recursively sort each group, using as many passes as necessary, and finally merge the sorted groups.A file of 1000 blocks is to be externally sorted, using 40 main-memory buffers. How many passes are needed? How many runs remain at the last pass? Find the correct number in the list below. a) The number of passes required is 2.b) The number of passes required is 3.c) The number of runs at the last pass is 10.d) The number of passes required is 1.
- Let U = {1,2,3,4,5,6,7,8,9,10}....Write a C program mexp that multiplies a square matrix by itself a specified number of times. mexp takes a single argument, which is the path to a file containing a square (k × k) matrix M and a non-negative exponent n. It computes Mn and prints the result. Note that the size of the matrix is not known statically. You must use malloc to allocate space for the matrix once you obtain its size from the input file.To compute Mn , it is sufficient to multiply M by itself n −1 times. That is, M3 = M ×M ×M . Naturally, a different strategy is needed for M0 .Input format The first line of the input file contains an integer k. This indicates the size of the matrix M , which has k rows and k columns.The next k lines in the input file contain k integers. These indicate the content of M. Each line corresponds to a row, beginning with the first (top) row.The final line contains an integer n. This indicates the number of times M will be multiplied by itself. n is guaranteed to be non-negative, but…AN EXAMPLE OF THE Dynamic Partitioning Memory Allocation Algorithm using First Fit is PRESENTED in the following table. Example for First-Fit TASK 1 2 3 4 5 BEST FIT SIZE STATE 50 EXECUTION 30 EXECUTION 120 WAIT 80 WATI 25 EXECUTION WORST FIT BLOCK SAWNP 1 2 3 4 5 P.D. EXPLAIN STEP AND CALCULATION TO DO THIS SIZE STATE 120 BUSY 80 BUSY 40 BUSY 50 FREE 30 FREE TASK 1 2 5 SIZE T. Then under the previous format and the same data is to perform the following two algorithms 50 30 25 WASTE 70 50 15 50 30 215 fragmentation FRAGMENTATION CALCULATIONS 元 50 15 70 135
- import java.util.Scanner;import java.util.ArrayList; public class UserIDSorting {// TODO: Write the partitioning algorithm - pick the middle element as the // pivot, compare the values using two index variables l and h (low and high), // initialized to the left and right sides of the current elements being sorted,// and determine if a swap is necessarypublic static int partition(ArrayList<String> userIDs, int i, int k) {} // TODO: Write the quicksort algorithm that recursively sorts the low and // high partitionspublic static void quicksort(ArrayList<String> userIDs, int i, int k) {} public static void main(String[] args) {Scanner scnr = new Scanner(System.in); ArrayList<String> userIDList = new ArrayList<String>(); String userID; userID = scnr.next();while (!userID.equals("-1")) {userIDList.add(userID);userID = scnr.next();}// Initial call to quicksort quicksort(userIDList, 0, userIDList.size() - 1); for (int i = 0; i < userIDList.size(); ++i)…A ring buffer, often known as a circular queue, is a fixed-size N FIFO data structure. It can be used to transport data between asynchronous processes or to store log files. When the buffer is empty, the consumer must wait for data to be deposited; when the buffer is full, the producer must wait for data to be deposited. Create a RingBuffer API as well as an implementation that uses an array representation (with circular wrap-around).Write a C program using pthreads, which calculates the sum of elements in a hard-codedinteger array in parallel using 4 threads. The program must divide the work between 4threads which run simultaneously. For simplicity, you can assume that the size of thearray is 100. Note that the integer array must be declared as a global data structure.Initially code your solution so that the sum of elements is maintained in a global shared variable. Each thread modifies the same shared variable as it sums up elements fromthe array. Use a suitable synchronization primitive (mutex) to ensure safe access to theglobal variable. (A sample code of Mutex is attached for your reference)