stage pipenr OF-EX-MEM-WB). The instructions will be executed in two steps. First we execute 61 instructions. Once the pipe is empty, the other 41 instructions are executed. How long does it take the computation of each step if each stage takes 2 time-units. (Justify your answer)

stage pipenr OF-EX-MEM-WB). The instructions will be executed in two steps. First we execute 61 instructions. Once the pipe is empty, the other 41 instructions are executed. How long does it take the computation of each step if each stage takes 2 time-units. (Justify your answer)

Name: Imagine that we have to execute 102 instructions using a 5 stage pipe
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Description: Imagine that we have to execute 102 instructions using a 5 stage pipeline architecture (IF-OF-EX-MEM-WB). The instructions will be executed in two steps. First we execute 61instructions. Once the pipe is empty, the other 41 instructions are executed

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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The runtimes of the five stages of executing an instruction in a non-pipelined machine are listed below. Instruction Fetch 100ps Instruction Decode 200ps ALU 300ps Memory 300ps Write Back 200ps This is then converted into a pipelined machine M1 using the most critical stage as the cycle time. For a new machine M2, we are allowed to break up exactly one stage into two substages of equal times giving us a six stage pipeline. A1: Discuss in short clear sentences the latency differences between the machines M1 and M2. A2: Discuss in short clear sentences the throughput differences between the machines M1 and M2.
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?
Consider a pipeline having 4 phases with a duration of 10, 50, 80, and 20 ns. Calculate the following Non-pipeline execution time for 1 instruction Sequential time for 1000 tasks Pipeline time for 1000 tasks Speed up ratio
Suppose we could take the system of (Figure 1) and divide it into an arbitrary number of pipeline stages k, each having a delay of 300/k, and with each pipeline register having a delay of 20 ps. What would be the latency of the system? Express your answer in terms of k. What would be the throughput of the system? Express your answer in terms of k. What would be the ultimate limit on the throughput? Express your answer as in integer.
For our simple 4-stage RISC pipeline, we run a particular benchmark program and find that it has 19% conditional branches. An additional 4% are unconditional branches. What is the maximum number of the conditional branches that could be taken if we want to keep the CPI to 1.10 or less? what is the minimum percentage of branch delay slots that need to be filled with useful instructions in order to keep the CPI to 1.0135? Assume that f2n= 0.25 ×f1n. In other words, whatever percentage of instructions need justa single NOP, there is another 25% of that requiring two NOPs.
Explain with an example how a 6 stage pipeline processor helps in speeding up the program execution as compared to non-pipelined processor. In the following example, find out the instruction pairs which can lead to data hazard in two stage pipeline and justify your answer. 1) MOV AL, 25H 2) MOV CH, 10H 3) MOV [2002H], AL 4) INC CH 5) MOV [2004H], CH 6) ADD DX, CH
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.
Describe pipelining in terms of boosting the performance of the processor, and then compute the number of cycles that will be required to execute five instructions assuming that each portion of the machine requires one cycle. a. Without using pipelines; b. By using pipelines a. With pipelined processes b. With pipelined processes c. With pipelined processes d. With pipelined processes d.
Given the following latencies for a 5-stage pipeline: IF ID EX MEM WB 200 ps 300 ps 100 ps 250 ps 150 ps a. What is the clock cycle time in a non-pipelined processor? b. What is the clock rate in a non-pipelined processor? c. What is the clock cycle time in a pipelined processor? d. What is the clock rate in a pipelined processor? e. How long will it take a Load instruction in this pipeline?
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?
A nonpipelined system takes 300ns to process a task. The same task can be processed in a 5-segment pipeline with a clock cycle of 60ns. Determine the speedup ratio of the pipeline for 100 tasks. What is the maximum speedup that could be achieved with the pipeline unit over the nonpipelined unit?
True/False Run times of the typical five stages to execute an instruction are as given in some units of time: Instruction Fetch: 10 Instruction Decode: 15 Execute: 30 Memory: 50 Write Back: 20 If this is implemented as a pipelined versus a non-pipelined machine, then depending on the absence of hazards, one could expect the speedup to be about 2.5.