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- 26.1-10For what number of processors do the two versions of the chessprogram run equally fast, assuming that TP = T1/P + T∞? A chess lessonTo illustrate the power of work/span analysis, this section closes with atrue story that occurred during the development of one of the firstworld-class parallel chess-playing programs [106] many years ago. Thetimings below have been simplified for exposition.The chess program was developed and tested on a 32-processorcomputer, but it was designed to run on a supercomputer with 512processors. Since the supercomputer availability was limited andexpensive, the developers ran benchmarks on the small computer andextrapolated performance to the large computer.At one point, the developers incorporated an optimization into theprogram that reduced its running time on an important benchmark onthe small machine from T32 = 65 seconds to seconds. Yet, thedevelopers used the work and span performance measures to concludethat the optimized version, which was…1. Write a LINUX C code for Banker’s Algorithm to deadlock avoidance.Note: Consider a system with five processes (P0–P4) and three resources (A, B, C). There are 9 instances of resource type A, 4 instances of resource type B, and 6 instances of resource type CModiflow y the beprogram given to include response time program;FCFS CPU SCHEDULING ALGORITHM #include<stdio.h>#include<conio.h>main(){int bt[20], wt[20], tat[20], i, n; float wtavg, tatavg;clrscr();printf("\nEnter the number of processes -- "); scanf("%d", &n); for(i=0;i<n;i++){printf("\nEnter Burst Time for Process %d -- ", i); scanf("%d", &bt[i]);}wt[0] = wtavg = 0; tat[0] = tatavg = bt[0]; for(i=1;i<n;i++){wt[i] = wt[i-1] +bt[i-1];tat[i] = tat[i-1] +bt[i]; wtavg = wtavg + wt[i]; tatavg = tatavg + tat[i];}printf("\t PROCESS \tBURST TIME \t WAITING TIME\t TURNAROUND TIME\n");for(i=0;i<n;i++){printf("\n\t P%d \t\t %d \t\t %d \t\t %d", i, bt[i], wt[i], tat[i]);}printf("\nAverage Waiting Time -- %f", wtavg/n);printf("\nAverage Turnaround Time -- %f", tatavg/n); getch();}
- (A) Write script to determine whether given file exist or not, file name is supplied as command line argument, also check for sufficient number of command line argument. Incorporate your own ideas to make the program more user friendly. (B) Consider the requests from processes in given order 300K, 25K, 125K and 50K. Let there be two blocks of memory available of size 150K followed by a block size 350K. Which out of best fit and first fit partition allocation schemes is most suitable for granting all the requests in this case. Show the allocations with the help of a diagram and explain.Assume there are 200 KB, 600 KB, 300 KB, 400 KB, and 700 KB memory partitions. These divisions are correct. Allocate processes with parameters 312 KB, 517 KB, 212 KB, and 526 KB using the first fit, best fit, and worst fit algorithms, then answer the following: Use a figure or table to represent the allocations. 2.Which of the three algorithms uses memory the most efficiently?b) Solve/Briefly discuss: 1) Suppose five memory partitions of 200 KB, 600 KB, 300 KB, 400 KB, and 700 KB (in order), how would each of the first-fit, best-fit, and worst-fit algorithms place processes of 315 KB, 520 KB, 115 KB, and 430 KB (in order)? Which algorithm makes the most efficient use of memory? 2) Compare the First fit and Best fit partition allocation with reference to Memory Man-agement. 3) What should be the optimal size of a page/frame?
- In this post, we'll take a step back and examine the basics of dynamic memory allocation.113. Banker's algorithm for resource allocation deals with a. deadlock prevention b. deadlock avoidance c. deadlock recovery d. mutual exclusionThe dining philosopher’s problem is a classic problem of synchronization and concurrency. Th e general problem is stated as philosophers sitting at a round table doing one of two things: eating or thinking. When they are eating, they are not thinking, and when they are thinking, they are not eating. Th ere is a bowl of pasta in the center. A fork is placed in between each philosopher. Th e result is that each philosopher has one fork to her left and one fork to her right. Given the nature of eating pasta, the philosopher needs two forks to eat, and can only use the forks on her immediate left and right. The philosophers do not speak to one another.Describe the scenario where none of philosophers ever eats (i.e., starvation). What is the sequence of events that happen that lead up to this problem?Describe how we can solve this problem by introducing the concept of a priority? But can we guarantee that we will treat all the philosophers fairly? Explain.Now assume we hire a waiter who is…
- Assume we have a free space management system as described in the book, for example one used to provide us with virtual addresses on the heap (with physical addresses handled by a much simpler system since we assume paging). Assume the system uses the following very simple rules; A memory request traverses the free list, and finds the first block large enough to handle the request (i.e., the first fit algorithm from the book). It then: Splits the block into 2 pieces: The first piece will be the requested size + 1k (for a header). The second will be the remaining The first piece will be returned to the caller, but the address returned will be the address of the memory for the user, that is the header + 1k The second will be put back into the linked list If there's insufficient contiguous memory, the allocation will fail (return 0) Free memory is stored as a linked list in address order Assume we start with a single contiguous block of FREE memory of size 64k starting at location…1. Write a Python script that spawns 10 processes with inputs 1,...,10 and utilises the multiprocessing method and the Pool object to compute and return the sum of integers up to and including each process's input.2. Create a Python software that uses columnwise 1D partitioning to multiply matrices to n n.In layman's terms, here's how dynamic memory allocation works.