Assume:CPU Clock = 1 GHz1 OP requires 5 clock cycles (arithmetic instruction, conditional, etc.)1 memory access requires 100 clock cycles (Read or Write)Problem size: N = 1,000,000 (1 million)There is no cost associated with the loop index variable: do not count any arithmeticinstructions for initializing or incrementing the loop index value, do not count any memoryaccesses for accessing and using the loop index variable in your computation of a sum.Assume the loop index variable is "free of charge"There is no memory cost of accessing and updating your accumulator variable (e.g., sum+= ...), but there is an arithmetic operation involved in updating the accumulator variable.Questions:1. For algorithm #1 shown below (direct sum):• How many arithmetic instructions are required by this algorithm?• How many memory accesses are required by this algorithm?• How many clocks are required by this algorithm?• What is the CPI (cycles per instruction) required by this algorithm?•What is the estimated execution time for this algorithm in seconds or fractions ofseconds, not counting the print and any problem setup?Algorithm #1 - Direct SumObjective: compute the sum of integers 0..N-1sum = 0for i in range(0,N):sum += iprint("sum = ", sum)

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Answered: CPU Clock = 1 GHz 1 OP requires 5 clock…

CPU Clock = 1 GHz 1 OP requires 5 clock cycles (arithmetic instruction, conditional, etc.) 1 memory access requires 100 clock cycles (Read or Write)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer. 

Question

Assume:
CPU Clock = 1 GHz
1 OP requires 5 clock cycles (arithmetic instruction, conditional, etc.)
1 memory access requires 100 clock cycles (Read or Write)
Problem size: N = 1,000,000 (1 million)
There is no cost associated with the loop index variable: do not count any arithmetic
instructions for initializing or incrementing the loop index value, do not count any memory
accesses for accessing and using the loop index variable in your computation of a sum.
Assume the loop index variable is "free of charge"
There is no memory cost of accessing and updating your accumulator variable (e.g., sum
+= ...), but there is an arithmetic operation involved in updating the accumulator variable.
Questions:
1. For algorithm #1 shown below (direct sum):
• How many arithmetic instructions are required by this algorithm?
• How many memory accesses are required by this algorithm?
• How many clocks are required by this algorithm?
• What is the CPI (cycles per instruction) required by this algorithm?
•
What is the estimated execution time for this algorithm in seconds or fractions of
seconds, not counting the print and any problem setup?
Algorithm #1 - Direct Sum
Objective: compute the sum of integers 0..N-1
sum = 0
for i in range(0,N):
sum += i
print("sum = ", sum)

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