a. What is Average CPl of machine M running a program P that has 31% Type 1 instructions, 29% Type 2 instructions, and the remainder Type 3 instructions? Answer with just a number. b What is the execution time if program Phas 15000 instructions and machine M has a clock rate of 4 GHz? Answer in microseconds, with 3 decimal places of precision. Just a number no units.

a. What is Average CPl of machine M running a program P that has 31% Type 1 instructions, 29% Type 2 instructions, and the remainder Type 3 instructions? Answer with just a number. b What is the execution time if program Phas 15000 instructions and machine M has a clock rate of 4 GHz? Answer in microseconds, with 3 decimal places of precision. Just a number no units.

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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Consider the two computers A and B with the clock cycle times 100 ps and 150 ps respectively for some program. The number of cycles per instruction (CPI) for A and B are 2.0 and 1.0 respectively for the same program. Which computer is faster and how much? Va A is 1.33 times faster than B b) B is 1.22 times faster than A c) A is 1.23 times faster thanB d) B is 1.33 times faster than A
Suppose we have two implementations of the same instruction set architecture. Computer A has a clock cycle time of 210 ps and a CPI of 2.2 for some programs, and computer B has a clock cycle time of 460 ps and a CPI of 1.3 for the same program. Which computer is faster for this program and by how much? Please and thank you
Given : Instruction Type 1, 2, and 3 on Machine M CPI, = 1; CPI2 = 2; CPI3 = 3 Answer with just a number a. What is Average CPI of machine M running a program P that has 31% Type 1 instructions, 29% Type 2 instructions, and the remainder Type 3 instructions? Answer with just a number. b What is the execution time if program Phas 15000 instructions and machine M has a clock rate of 4 GHz? Answer in microseconds, with 3 decimal places of precision. Just a number no units. c. What is the speedup if M's clock rate is improved to 5 GHz. Just a number. d. What is the speedup from the original time calculated in part b if the clock rate is improved to 5 GHz and type 3 instructions are improved to 2 CPI? Just a number. Three decimal places of precision.
1. A program has 5 billion instructions is running with a CPI of 2 on a machine with a 2.5GHZ frequency, what is the execution time in seconds? 2. In a program 40% of the instructions have a CPI of 1, 25% have a CPI of 2, 20% have a CPI of 3 and 15% have a CPI of 5. Find the number of instructions per second if the machine is running at 900 MHz? 3. If 5 processors can run a program 2 times faster than a single processor, how much faster than a single processor can 10 processors run the same program? 4. If the base machine can run the 5 SPEC benchmarks in 1Os, 20s, 30s, 40s and 60s, whereas the target machine can run them in 5s, 1Os, 5s, 10s and 40s, respectively, what is the SPEC value for this scenario?
Consider two computers, P1 and P2, of the same instruction set (ISA). We have a program of 7.5x10⁹ instructions and we want to run this program on P1 and P2. The P1 computer is a 5 GHz machine with CPI of 0.8. The P2 computer is a 6 GHz machine with CPI of 1.2. How many times that computer is faster than another?
Suppose that we have two implementations of the same instruction set architecture. Machine A has a clock cycle time of 50 ns and a CPI of 4.0 for some program, and machine B has a clock cycle of 65 ns and a CPI of 2.5 for the same program. Which machine is faster and by how much?.
2. Suppose we have two implementations of the same instruction set architecture. Computer A has a clock cycle time of 250 ps and a CPI of 2.0 for some program and computer B has a clock cycle time of 500 ps and a CPI of 1.2 for the same program. Which computer is faster for this program and by how much? ur foverit 10 go
A processor executes a program in 10 seconds with an average CPI and IC of 2 and 20*109 respectively. We are trying to reduce the time by 20% but this leads to an increase of 50% in the CPI. What clock rate should we have to get this time reduction?
A Program is running on a processor Pl and it has the following parameters: Ic is equal to 20,000,000 instructions Average CPI is 3 cycles/instruction CPU frequency is 500 MHz A new processor P2 is used with the following parameters and the program is executed on this new processor now: Ic is equal to 18,000,000 instructions New average CPI: 3.5 cycles/instruction CPU new frequency: 600 MHz Which processor is faster? Compute the speedup.
Consider having a program that runs in 50 s on computer A, which has a 500 MHz clock. We would like to run the same program on another machine, B, in 20 s. If machine B requires 2.5 times as many clock cycles as machine A for the same program, what clock rate must machine B have in MHz?
Suppose that we are developing a new version of the AMD Barcelona proces- sor with a 4 GHz clock rate. We have added some additional instructions to the instruction set in such a way that the number of instructions has been reduced by 15% from the values shown for each benchmark in Exercise 1.12. The execution times obtained are shown in the following table. a. Name Execution Time (seconds) Reference Time (seconds) bzip2 700 9650 SPECratio 13.7 1.13.2 [10] In general, these CPI values are larger than those obtained in previous exercises for the same benchmarks. This is due mainly to the clock rate used in both cases, 3 GHz and 4 GHz. Determine whether the increase in the CPI is similar to that of the clock rate. If they are dissimilar, why?
A Program is running on a processor P1 and it has the following parameters: Ic is equal to 20,000,000 instructions Average CPI is 3 cycles/instruction CPU frequency is 500 MHz A new processor P2 is used with the following parameters and the program is executed on this new processor now: Ic is equal to 18,000,000 instructions New average CPI: 3.5 cycles/instruction CPU new frequency: 600 MHz Which processor is faster? Compute the speedup.