1- How many segment we need to perform the arithmetic expression, show the content of register in pipeline. Ai * Bi / Ci +Di for i=1...4 2- After that compute the time required to complete operation, write the ratio of speedup of pipeline over equivalent non pipeline processing. Suppose: Tp=10ng, task=4

1- How many segment we need to perform the arithmetic expression, show the content of register in pipeline. Ai * Bi / Ci +Di for i=1...4 2- After that compute the time required to complete operation, write the ratio of speedup of pipeline over equivalent non pipeline processing. Suppose: Tp=10ng, task=4

Name: 1- How many segment we need to perform the arithmetic expression,show
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Description: 1- How many segment we need to perform the arithmetic expression,show the content of register in pipeline.Ai * Bi / Ci +Di for i=1...42- After that compute the time required to complete operation, write theratio of speedup of pipeline over equivalen

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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1A.What condition needs to be satisfied so that converting from a nonpipelied to a pipelined machine the throughput goes up by ‘N’, where ‘N’ is the number of stages in the pipeline? 1B.Is that practical? If not practical, why?
Question 7: Suppose in a program there are 300 instructions, and 6 stages are required for each instruction to be processed. Time required in each stage is equivalent to 1 ps. Calculate the efficiency of pipeline parallel processing.
lw r1,12(r7)lw r2,16(r7)add r1,r1,r2sw r1,4(r5)a. Identify and describe all the data dependencies.b. How many clock cycles does it take to execute this code without any pipelining?c. How many clock cycles with pipelining, but no bypassing (stalls cause the pipeline to wait until previous instruction is finished)?
y using the code fragment below, please choose your answer for the following question. Loop: add $s1, $0, $s1 addi $s2, $0, 1 sub $s1, $s1, $s2 slt $s3, $s1, $s2 bne $s3, $0, Loop Please select the correct diagram of this instruction sequence for the 5-stage MIPS pipeline without any forwarding or bypassing hardware. 1 2 3 4 5 6 7 8 9 IF ID EX MEM WB IF ID EX MEM WB IF ID EX MEM WB IF ID EX MEM WB IF ID EX MEM WB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 IF ID EX MEM WB IF ID EX MEM WB S S IF ID EX MEM WB S IF ID EX MEM WB S IF ID EX MEM WB 1 2 3 4 5 6 7 8 9 10 11 12…
Why is a single instruction in a pipeline datapath not shorter than that in a multi-cycle datapath even though totally a pipeline mechanism performs better. Please select the correct choice. a - Because of quicker time of execution of large number of instructions b - Because pipelined CPUs generally work at a higher clock frequency than the RAM clock frequency, c - Because it is possible to execute multiple instructions sequentially d - Because in a pipeline architecture, 1 instruction abandons the pipeline in each cycle, so the CPI will be of 1. e - Because increase in the number of pipeline stages increases the number of instructions executed simultaneously.
CPI stands for clock cycles per instruction. Speedup from pipelining = (Number of pipeline stages) / (Achieved CPI ). Assume a 5-stage pipeline. Assume that CPI = 1 when there are no pipeline stalls (the ideal case). Now assume that every branch instruction causes a 3 clock cycle stall in the pipeline. Assume that for the program being executed 30% of executed instructions are branch instructions. What speedup from pipelining is achieved by this program?
For the problems in this exercise, assume that there are no pipeline stalls and that the breakdown of executed instructions is as follows: add addi not beq lw sw 20% 20% 0% 25% 25% 10% In what fraction of all cycles is the data memory used?In what fraction of all cycles is the input of the sign-extend circuit needed? What is this circuit doing in cycles in which its input is not needed?
Pipeline performance. Suppose processor A executes instructions in the following 4 stages (no pipeline), where each stage could run this fast. Compare the performance of a pipelined vs. unpipelined implementation of processor A.IF&ID | 25nsEX | 20nsMem | 40nsWB | 15nsDraw the pipeline diagram to show clock cycles with time. Compare the performance of a pipelined vs. unpipelined implementation of processor A.
Consider a fairly standard 5-stage pipeline: Fetch; Decode; Execute; Memory; Writeback. Let the processor be a nice, simple RISC single-cycle machine. The instructions below are executed. The branch should be taken — however, this processor does no prediction and always assumes a fall-through. Draw a Gantt chart for this and determine the branch penalty. SUB R1, R1, #1 BEQ R1, R0, LoopDone LOAD R2, Memory(100) SUB R3, R2, R1 MUL R3, R3, R3 LOAD R4, Memory(200) ADD R5, R4, R3 STORE R5, Memory(204)
Translate following program into compiled MIPS code. Assume that g, c, i are in $s0, $s1, $s2 registers. base of A & B is in $s3 and $s4 respectively. i) c = c - 2 , ii) A[5] = B[1] + 2, iii) i=10 while (i>0) { A[i] =i; i = i-1; }
Make a pipeline diagram of the code and insert NOP where needed. What kind of risks (pipeline hazards) are there in the diagram / table you did? At least how many cycles does the code need to be performed? while(a<10){ D[a] = b+a; a += 1; } The MIPS code below is equivalent to the C code above. The variables a and b are stored in registers $ s0 and $ s1 respectively. Loop: slti $t0, $s0, 10 beq $t0, $zero, exit sll $t1, $s0, 2 add $t1, $t1, $s2 add $t2, $s1, $s0 sw $t2, 0($t1) addi $s0, $s0, 1 j Loop exit:
A non-pipelined system takes 100ns to process a task. The same task can be processed in a 5-segment pipeline with a clock cycle of 20ns. a. Determine the speedup ratio of the pipeline for 100 tasks.b. Determine the speedup ratio of the pipeline for 20 tasks.c. Determine the speedup ratio of the pipeline for 1 task.d. What is the maximum speedup that could be achieved with the pipeline unit over the non-pipelined unit?