Consider two different implementations, M1 and M2, of the same instruction (one billion instructions). There are three classes of instructions (A, B, C, and D) in the instruction set. Machine MI has a clock rate of 500 MHz and Machine M2 has a clock rate of 600 MHz. The average number of cycles for each instruction class and their frequencies (for a typical program) are as follows: CPI (Cycles Per Instruction) Machine M1 Instruction Frequency Class Machine M2 40% 2 2 25% 3 C 25% 3 3 D 10% 4. i. Calculate the average CPI for each machine, M1, and M2. ii. Which sequence will be faster according to MIPS?

Consider two different implementations, M1 and M2, of the same instruction (one billion instructions). There are three classes of instructions (A, B, C, and D) in the instruction set. Machine MI has a clock rate of 500 MHz and Machine M2 has a clock rate of 600 MHz. The average number of cycles for each instruction class and their frequencies (for a typical program) are as follows: CPI (Cycles Per Instruction) Machine M1 Instruction Frequency Class Machine M2 40% 2 2 25% 3 C 25% 3 3 D 10% 4. i. Calculate the average CPI for each machine, M1, and M2. ii. Which sequence will be faster according to MIPS?

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 two different implementations, 1 and 12, of the same instruction set. There are three classes of instructions (A, B, and C) in the instruction set. I1 has a clock rate of 6GHZ, and 12 has a clock rate of 3GHZ. The average number of cycles for each instruction class on 1 and 12 is given in the following table: CPI on 12 C1 Usage C2 Usage Class CPI on 11 C3 Usage A 2. 40% 40% 50% 40% 20% 25% 5 20% 40% 25% The table also contains a summary of average proportion of instruction classes generated by three different compilers. C1 is a compiler produced by the makers of 1, C2 is produced by the makers of 12, and the other compiler is a third-party product. Assume that each compiler uses the same number of instructions for a given program but that the instruction mix is as described in the table. Using C1 on both 1 and 12, how much faster can the makers of 1 claim 1 is compared to 12? Using C2, how much faster can the makers of 12 claim that 12 is compared to 1?
Given an instruction sequence with instructions in classes A, B, and C as the table below: Instruction Class A B C |CPI Instruction Count|10|40|10| 2 1 3 Total number of instructions in this sequence = Number of clock cycles from instruction class A = Number of clock cycles from instruction class B = Number of clock cycles from instruction class C = Total number of clock cycles = Average CPI for this instruction sequence = (Answer with a float the decimal point, e.g. 4.5)
Please,Consider two different implementations, M1 and M2, of the same instruction set. There arethree classes of instructions (A, B, and C) in the instruction set. M1 has a clock rate of 2.0GHz and M2has a clock rate of 2.5GHz. The average number of cycles for each instruction class and their frequencies(for a typical program) are as follows:Instruction Class M1-Cycles/InstructionClass M2 -Cycles/InstructionClasss FrequencyA 1 2 60%B 3 2 30%C 4 3 10%(a) Calculate the average CPI for each machine, M1, and M2.(b) Calculate the average MIPS ratings for each machine, M1 and M2.(c) Which machine has a smaller MIPS rating? Which individual instruction class CPI do you needto change, and by how much, to have this machine have the same or better performance as themachine with the higher MIPS rating (you can only change the CPI for one of the instructionclasses on the slower machine)?.
Please solve and show work. Consider two different implementations of the same instruction set architecture. The instructions can be divided into four classes according to their CPI (class A, B, C, and D). P1 with a clock rate of 2.5 GHz and CPIs of 1, 2, 3, and 2, and P2 with a clock rate of 3 GHz and CPIs of 2, 3, 2, and 2. Given a program with a dynamic instruction count of 1.0E6, instructions are divided into classes as follows: 30% class A, 20% class B, 30% class C, and 20% class D; which implementation is faster? What is the global CPI for each implementation? Find the clock cycles required in both cases.
Computer A has an overall CPI of 1.3 and can be run at a clock rate of 600MHz. Computer B has a CPI of 2.5 and can be run at a clock rate of 750 MHz. We have a particular program we wish to run. When compiled for computer A, this program has exactly 100,000 instructions. How many instructions would the program need to have when compiled for Computer B, in order for the two computers to have exactly the same execution time for this program? Please explain how to solve
1. Consider a machine running a program with four classes of instructions: A/B/C/D. The program requires 360 seconds, with the number of seconds executing each class as shown in the table below: Instruction Class A B C Time (sec) 100 80 120 60 1.1. By how much is the total execution time changed if the time for class D is reduced by 20% and the time for class C is increased by 10% (assuming no other changes)? 1.2. If we want to reduce the total execution time by 20% by optimizing class A only, what is the target execution time of class A instructions in order to achieve the reduction (assuming all other instructions are not changed)? 1.3. Can the total time be reduced by 25% if we only optimize class B? Use calculation to justify your answer.
Consider two different implementations of the same instruction set architecture.The instructions can be divided into four classes according to their CPI (classA, B, C, and D). P1 with a clock rate of 2.5 GHz and CPIs of 2, 3, 4, and 4, andP2 with a clock rate of 3 GHz and CPIs of 2, 2, 3, and 1. Given a program witha dynamic instruction count of 1.0E6 instructions divided into classes asfollows: 10% class A, 20% class B, 50% class C, and 20% class D, whichimplementation is faster?
i Consider two different implementations, 11 and12, of the same instruction set. There are three classes ofinstructions (A, B, and C) in the instruction set. 11 has a clockrate of 5 GHz, and 12 has a clock rate of 7 GHz. The average numberof cycles for each instruction class on 11 and 12 is given in thefollowing table: Class CPI on 11 CPI on 12 C1 Usage C2 Usage C3 Usage A 30% 25% 5% B 1 2. 40% 25% 90% 4 2 30% 50% 5% The table also contains a summary of average proportion ofinstruction classes generated by three different compilers, C1, C2,and C3. Assume that each compiler uses the same number ofinstructions for a given program but that the instruction mix is asdescribed in the table. a). Using C1, compute the average CPI for each of 1 and 12Then compute the speed, that is the average number of instructionsper second for each of 1 and 12. Then decide which one is fasterthan the other? and in what ratio? b). Using C2, compute the average CPI for each of 11 and 12Then compute the speed,…
Consider two different implementations, 11 andi2, of the same instruction set. There are three classes ofinstructions (A, B, and C) in the instruction set, 11 has a clockrate of 5 GHz, and 12 has a clock rate of 7 GHz. The average numberof cycles for each instruction class on 11 and 12 is given in thefollowing table: Class CPI on 11 CPI on 12 C1 Usage C2 Usage C3 Usage A 30% 25% 5% 2 40% 25% 90% 4 2. 30% 50% 5% The table also contains a summary of average proportion ofinstruction classes generated by three different compilers, C1, C2,and C3. Assume that each compiler uses the same number ofinstructions for a given program but that the instruction mix is asdescribed in the table. Using C3, compute the average CPI for each of 1 and 12 Thencompute the speed, that is the average number of instructions persecond for each of 11 and 12. Then decide which one is faster thanthe other? and in what ratio?
3. Consider two different implementations of the same instruction set architecture. The instructions can be divided into four classes according to their CPI (class A, B, C, and D). P1 with a clock rate of 2.5 GHz and CPIS of 1, 2, 3, and 3, and P2 with a clock rate of 3 GHz and CPIS of 2, 2, 2, and 2. Given a program with a dynamic instruction count of 1.0E6 instructions divided into classes as follows: 10% class A, 20% class B, 50% class C, and 20% class D, which implementation is faster? a. What is the global CPI for each implementation? b. Find the clock cycles required in both cases.
Consider two computers, P1 and P2, of the same instruction set (ISA). We have a program of 7.5x10° 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. What is the CPU time of P1 computer to run this program?
Consider two different implementations, P1 and P2, of the same instruction setarchitecture. There are four classes of instructions (A, B, C, and D).P1 has a clock rate of 1.5 GHz and CPI for each instruction class is as follows:Class CPI for this classA 1B 2C 3D 4P2 has a clock rate of 2.0 GHz and CPI for each instruction class is as follows:Class CPI for this classA 2B 2C 2D 2a. Given a program with 106 instructions divided into classes as follows: 10% classA, 20% class B, 50% class C and 20% class D, which implementation is faster?