Computers and Technology, 15.02.2020 00:13, jumoke26

In a machine M1 clocked at 100 MHz it was observed that 20% of the computation time of integer benchmarks is spent in the subroutine multiply(A, B, C), which multiplies integer A and B and returns the result in C. Furthermore, each invocation of Multiply takes 800 cycles to execute. To speed up the program it is proposed to introduce a new instruction MULT to improve the performance of the machine on integer benchmarks. Please answer the following questions, if you have enough data. If there are not enough data, simply answer "not enough data."
a. How many times is the multiply routine executed in the set of programs?
b. An implementation of the MULT instruction is proposed for a new machine M2; MULT executes the multiplication in 40 cycles (an improvement over the 800 cycles needed in M1). Besides the multiplies, all other instructions which were not part of the multiply routine in M1 have the same CPI in M1 and M2. Because of the added complexity, however, the clock rate of M2 is only 80 MHz. How much faster (or slower) is M2 than M1?
c. A faster hardware implementation of the MULT instruction is designed and simulated for a proposed machine M3, also clocked at 80 MHz. A speedup of 10% over M1 is observed. Is this possible, or is there a bug in the simulator? If it is possible, how many cycles does the mult instruction take in this new machine? If it is not possible, why is this so?

Answers: 1

Show answers

Other questions on the subject: Computers and Technology

Computers and Technology, 22.06.2019 19:50, rosyposy43

Write a car class having two private member variables called tank and speed. write public methods called pumpgas and gofast. the method pumpgas gets an integer for gas that must be pumped. that value needs to be added to tank (no more than 20 gallons). it must return the amount of gas that is purchased ($4 per gallon). the method gofast should increase the speed by 5 each time it is called. write a constructor for the above class that initialized both variables to zero. write a tostring to display both the tank and speed when the car is printed. modify the car class to implement the interface comparable and an interface called carinter having the public methods in carinter. write the main program to create an array of size 5 of type car. create 5 car objects having each location of the array to refer to one of the cars. test the pumpgas, gofast, equals method on the array items. write an enhanced loop to print all the car values (using a tostring written last time).write a generic method to find the minimum of four items. pass int, double, char, string and car objects to test this method.

Answers: 1

continue

Computers and Technology, 23.06.2019 18:30, sawyerfauver

The computers in the sales department did not have enough data storage capacity to contain all the information the department needed to store, and it was taking a long time for team members to access the data they needed. to fix the problem, the technician installed new, larger hard drives on all the computers.

Answers: 1

continue

Computers and Technology, 24.06.2019 13:30, tami5

Write a program that uses a two-dimensional array to store the highest and lowest temperatures for each month of the year. the program should output the average high, average low, and the highest and lowest temper- atures for the year. your program must consist of the following functions: a. function getdata: this function reads and stores data in the two- dimensional array. b. function averagehigh: this function calculates and returns the average high temperature for the year. c. function averagelow: this function calculates and returns the aver- age low temperature for the year. d. function indexhightemp: this function returns the index of the highest high temperature in the array. e. function indexlowtemp: this function retur

Answers: 3

continue

Computers and Technology, 24.06.2019 15:30, PresleyPie9452

George is working as a programming team lead. which statements correctly describe the skills that he requires?

Answers: 3

continue

Do you know the correct answer?

In a machine M1 clocked at 100 MHz it was observed that 20% of the computation time of integer bench...