Performance Equations Consider a branch instruction which is executed 8 times in a program. Theactual outcomes of the branch are N, T, N, T, N,N,N, T where T =Taken and N = Not taken. Dynamic branch prediction is used to predict thebranch outcomes. Show the predictions made for each instance of thebranch and calculate the branch prediction accuracy in case of thefollowing two predictors:a) A 1-bit branch predictor which starts in the LNT (Likely Not Taken)stateAssume states to beSLT - Strongly Likely to be Taken (11)LT - Likely to be Taken (10)NLT - Not Likely to be taken (01) SNT - StronglyNot Likely to be taken(00)(b) A 2-bit branch predictor which starts in the SNT stateN.B. drawing the state diagram can help solve the problem easily.

Finally, we examined two distinct branch predictors' performances for a set of branch instructions.…

Answered: Consider a branch instruction which is…

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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Here, each instruction gets its own data, regardless of how other instructions obtain theirs. We use a(n): A Multiple Data/Instruction B Multiple Data/Instruction C Singular Data Single Inst D Singe Inst Multiple
4. We have the following data for a branching instruction, where T = branch is taken, and N = the bgranch is not taken: TTTTNNNNNNNNNNNTTTTTTTTNNNNNNNNNNTTTT a. what is the success prediction rate for the one bit prediction method? b. what is the success prediction rate for the two bit prediction method? C. compare the two and comment
Consider the following sequence of outcomes for a particular branch instruction: T, NT, T, NT, T, NT, T, NT…. Assume this sequence repeats indefinitely. Part A: The Easy Part What is the long-term (steady-state) accuracy of the predict-taken predictor? What about predict-not-taken? Part B: 1-bit predictor What is the long-term (steady-state) accuracy of the 1-bit predictor? If its initial state matters, explain. Part C: 2-bit predictor What is the long-term (steady-state) accuracy of the 2-bit predictor? If its initial state matters, explain. Part D: Custom Predictor Design your own predictor that uses no more than 2 bits of state to maximize prediction accuracy for this pattern. Show the state diagram, and give the long-term accuracy of your predictor. If its initial state matters, explain.
Description: Implement a transistor-level schematic of a computational unit/ALU that can perform the following operations. XOR ● XNOR Multiplication Addition Subtraction ● Rotate Shift Right Magnitude Comparator ● Equality Comparator The computational unit/ALU has a decoder to decode an instruction and a multiplexer to select outputs of different operations. Data inputs are 4-bit wide. Make sure you test your design for all the operations listed above.
Communication Engineering. Dsp. lab
For the given values of D, shr, shr_in, Id, and clk, indicate the register's Q value. Dis 111, shr_in is 0, shr is 1, Id is 0, and Q is 101. clk rises. What does Q become? Function table thr Id | Register function IP shr in- 0 0 Maintain 01Lood 0 Shuft-right 1Maintain 13 12 i1 0 13 12 it 0 13 12 it 10 she st 4xl 4x1 4xl Block ymbol DFF OFF DFF to she in 3-bit ahift-rht/lend ragister she at ahirightad ld Pegiter O 010 O 110 O 101 O 111
In this implementation, each instruction is provided with its own data independently of how other instructions acquire theirs. We insert a(n): A Multiple Input/Output B The Case of Many Pieces of Information or Directions C Unique Information Only One D Several Insts From One
In this case, every instruction receives its own data, independent of how the data for other instructions is obtained. We make advantage of a: A Multiple Data/Instruction B Multiple Iterations of Data or Instruction C Singular Data Single Inst D Singe Inst Multiple
Let's assume %ecx = 0x000FFD0E and %eax= 0x000FED25 (Hexadecimal representation). What is the value in %ecx after the following instruction? orq %eax, %ecx Provide answer in hexadecimal representation. Acceptable answer format: 000003FD or 0x000003FD
5. Below is a depiction of a loop in instruction memory address Охо TOP: instruction 1 Ox4 instruction 2 Ox8 instruction 3 OxC instruction 4 Ох10 conditional branch to TOP Assume that the branch target buffer is initially empty, and the prediction bits are set to Strongly Taken (ST). Fill in the blanks On the first pass through the loop we take the branch. The branch target bits are now We suffer stalls. On the second pass through the loop we don't take the branch. The branch target bits are now We suffer stalls. On the third pass through the loop we don't take the branch. The branch target bits are now We suffer stalls. On the fourth pass through the loop we don't take the branch. The branch target bits are now We suffer stalls.
Multicycle execution is better than single cycle execution since it is: a. Every operation is completely carried out within a single clock cycle b. Break up operation so that each stage is executed in 1 clock cycle and allow skipping of unused stages. c. The maximum clock frequency is determined by the slowest instruction in the instruction set. d. A form of parallelism since more than one instruction is executed by the processor in any given cla
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