gate questions on pipelining

The pipeline stalls 25% of the time for 1 cycle and 10% of the time for 2 cycles (these occurrences are disjoint). Average no. What is the number of clock cycles needed to execute the following sequence of instructions? GATE (CS/IT) Question and Answer 2016 October 15, 2018 Question Paper. Best answer. In theory, as projects pass through the work intake process, those that do not meet key criteria or are deemed of lower value should be screened out. Pipeline operators consider the product the pipeline is carrying, the age of the pipeline, geohazards and other critical elements to determine how frequently pipelines should be inspected. Sweta Kumari. Register renaming is done in pipelined processors. Consider a $$6$$-stage instruction pipeline, where all stages are perfectly balanced. This test is Rated positive by 85% students preparing for Computer Science Engineering (CSE).This MCQ test is related to Computer Science Engineering (CSE) syllabus, prepared by … flow pipeline Set parameters or properties on a Flow (CD) pipeline gate I have a pipeline that emails people in an entry gate to get a "go/nogo" for running the release stage. What is the number of clock cycles taken to complete the following sequence of instructions? P4: Five-stage pipeline with stage latencies 0.5 ns, 0.5 ns, 1 ns, 1 ns, 1.1 ns. The execution times of this program on the old and the new design are P and Q nanoseconds, respectively. Each quiz objective question has 4 options as possible answers. The number of clock cycles required for completion of execution of the sequence of instructions is ______. $$\,\,\,\,\,$$$$IF:$$ Instruction Fetch Consider an instruction pipeline with four stages $$\left( {S1,\,S2,\,S3,} \right.$$ and $$\left. Consider a pipelined processor with the following four stages c = 20 Which of the following are NOT true in a pipelined processor? Which processor has the highest peak clock frequency? The number of cycles needed by the four instructions I1, I2, I3, I4 in stages S1, S2, S3, S4 is shown below: What is the number of cycles needed to execute the following loop? The IF, ID, OF and WO stages take 1 clock cycle each for any instruction. e = c + d You can find other Pipelining - MCQ Quiz - 1 extra questions, long questions & short questions for Computer Science Engineering (CSE) on EduRev as well by searching above. Here in this tutorial we discussed some computer organization mcq for GATE EXAM practice from different topics of this subjects. In this post, I’ll explain the steps required to add a performance quality gate to your Azure DevOps pipelines for … Consider a 6-stage instruction pipeline, where all stages are perfectly balanced.Assume that there is no cycle-time overhead of pipelining. (ans=2.05) a = 1 CSC506 Pipeline Homework – due Wednesday, June 9, 1999 Question 1. III. The same processor is upgraded to a pipelined processor with five stages; but due to the internal pipelined delay, the clock speed is reduced to 2 gigahertz. Consider a pipelined processor with the following four stages: IF: Instruction Fetch An instruction pipeline has five stages where each stage takes $$2$$ nanoseconds and all instructions use all five stage... An instruction pipeline consists of $$4$$ stages: Fetch (F), Decode field (D), Execute (E), and Result-Write (W). I calculated and it turns out to be . The instruction pipeline of a RISC processor has the following stages: Instruction Fetch (IF), Instruction Decode (ID), Operand Fetch (OF), Perform Operation (PO) and Writeback (WB), The IF, ID, OF and WB stages take 1 clock cycle each for every instruction. d = a + b This will be a very important session for all learners. Assuming that all operations take their operands from registers, what is the minimum number of registers needed to execute this program without spilling? The IF, ID and WB stages take one clock cycle each to complete the operation. The PO stage takes 1 clock cycle for ADD and SUB instructions, 3 clock cycles for MUL instruction, and 6 clock cycles for DIV instruction respectively. Machine Instructions and Addressing Modes, Register renaming is done in pipelined processors. These instructions may be executed in the following two ways- The speed up achieved in this pipelined processor is _____. Also, the EX stage is split into two stages (EX1, EX2) each of latency 1 ns. All instructions other than the branch instruction have an average CPI of one in both the designs. An instruction pipeline has five stages, namely, instruction fetch (IF), instruction decode and register fetch (ID/RF), instruction execution (EX), memory access (MEM), and register writeback (WB) with stage latencies 1 ns, 2.2 ns, 2 ns, 1 ns, and 0.75 ns, respectively (ns stands for nanoseconds). branch instructions taken in a 4-stage pipeline GATE Computer Science and IT Syllabus - Section A: Engineering Mathematics ... Q.33 Consider a 3 GHz (gigahertz) processor with a three-stage pipeline and stage latencies τ1, τ2, and τ3 such that τ1 = 3τ2/4 = 2τ3. The value of P/Q is __________. Speed up, Efficiency and Throughput are performance parameters of pipelined architecture. It consist of approx. n this session vishvadeep gothi will discuss pipeline chapter, its questions and then instruction pipeline. The scenario will change,meaning that the pipeline will re-issue the fetch of the available instruction in the next cycle ( i + 1 ) causing one-cycle stall. We have also provided number of questions asked … Watch GATE 2020 Paper Analysis and Answer Key: https://bit.ly/37UgIZh Watch GATE ME Answer KEY 2020: https://youtu.be/T7IHXbW_kdY Watch GATE … Assume that there are no stalls in the pipeline. The pipeline registers are required between each stage and at the end of the last stage.Delays for the stages and for the pipeline registers are as given in the figure. Register renaming can eliminate all register carried WAR hazards CIS 501 (Martin/Roth): Pipelining 17 Optimizing Pipeline Depth ¥Parameterize clock cycle in terms of gate delays ¥G gate delays to … An instruction requires four stages to execute: stage 1 (instruction fetch) requires 30 ns, stage 2 (instruction decode) = 9 ns, stage 3 (instruction execute) = 20 ns and stage 4 (store results) = 10 ns. What is the approximate speed up of the pipeline in steady state under ideal conditions when compared to the corresponding non-pipeline implementation'? Consider a non-pipelined processor with a clock rate of 2.5 gigahertz and average cycles per instruction of four. A directory of Objective Type Questions covering all the Computer Science subjects. return d + f Operand forwarding is used in the pipelined processor. P1: Four-stage pipeline with stage latencies 1 ns, 2 ns, 2 ns, 1 ns. GATE CS Topic wise Questions Computer Organization and Architecture R5 ← R0 + R1; R6 ← R2 * R5; R5 ← R3 - R6; R6 ← R5/R4; X ← R6; the question was to calculate number of Output,True and Anti Dependencies in the instructions. The session will be conducted in Hindi and notes will be provided in English. It takes 5 clock cycles to complete an instruction. To give you an idea of the commitment of transmission pipeline operators ' to inspections and maintenance, in 2015, CEPA members … If the longest pipeline stage is split into two pipeline stages of equal latency, the new frequency is _________ GHz, ignoring delays in the pipeline registers. Pipelining in Computer Architecture is an efficient way of executing instructions. Computer organization and architecture is an important subject for GATE CSE Exam. Consider an instruction pipeline with four stages (S1, S2, S3 and S4) each with combinational circuit only. GATE 2019 CSE syllabus contains Engineering mathematics, Digital Logic, Computer Organization and Architecture, Programming and Data Structures, Algorithms, Theory of Computation, Compiler Design, Operating System, Databases, Computer Networks, General Aptitude. Operand forwarding is used in the pipeline. e = b + f The program below uses six temporary variables a, b, c, d, e, f. In our last post, Daniel Semedo and I provided an overview of how to add automated performance quality gates using a performance specification file, as defined in the open source project Keptn Pitometer.. Dec 02,2020 - Pipelining (Advance Level) - 1 | 13 Questions MCQ Test has questions of Computer Science Engineering (CSE) preparation. A 7 stage pipeline with following stage delays 100, 150,190,200,400,250,350 is changed to 5 stage pipeline with 100, X, 150, 140, 200 to increase the speed up percentage to 100 percent. f = c + e Practice these MCQ questions and answers for preparation of various competitive and entrance exams. Choose your option and check it with the given correct answer. Which of the following are NOT true in a pipelined processor? Consider a 3 GHz (gigahertz) processor with a three-stage pipeline and stage latencies $\style{font-family:'Times New Roman'}{\tau_1\;,\;\tau_2}$, and $\style{font-family:'Times New Roman'}{\tau_3\;}$ such that $\style{font-family:'Times New Roman'}{\tau_1=3\tau\;=\;3\tau_2/4=2\tau_3}$. The performance of a pipelined processor suffers if. Practice Problems based on Pipelining in Computer Architecture. Pipeline Management Question. Consider a non-pipelined processor with a clock rate of 2.5 gigahertz and average cycles per instruction of four. Digital Computer System Architecture and Organization multiple choice questions and answers set contain 5 mcqs on instruction pipelining. Jan 29, 2020 • 1h 5m . The stage delays in a $$4$$-stage pipeline are $$800, 500, 400$$ and $$300$$ picoseconds. Questions Answers . Assume that the pipeline registers have zero latency. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. An instruction must proceed through the stages in sequence. Pipelining Pipeline processing is an implementation technique, where arithmetic sub-operations or the phases of a computer instruction cycle overlap in execution. Instruction fetch happens in the first stage of the ... A $$5$$ stage pipelined $$CPU$$ has the following sequence of stages $$IF$$-Instruction fetch from instruction memory, $... A $$4$$-stage pipeline has the stage delays as $$150, 120,160$$ and $$140$$ nano seconds respectively. Quizzes and practice/competitive programming/company interview questions and Architecture is an important subject for GATE Exam practice different! For any instruction of clock cycles needed to execute the following are NOT true in a -stage are! Possible answers conditions when compared to the corresponding non-pipeline implementation ' contains well written, well and... -Stage instruction pipeline, where all stages are perfectly balanced ( CS/IT ) question and 2016. Of Objective Type questions covering all the Computer science subjects complete an instruction proceed... Instruction cycle overlap in execution 6-stage instruction pipeline, where all stages are perfectly balanced should..., S2, S3 and S4 ) each with combinational circuit only the in! With a clock rate of 2.5 gigahertz and average cycles per instruction of four pipelined Architecture efficient way executing... For an instruction completed every cycle assuming we handle pipeline hazards pipeline are 800, 500 400! All stages are perfectly balanced.Assume that there is no cycle-time overhead of.. $ -stage instruction pipeline with stage latencies 0.5 ns, 1 ns, 1.5.! Stages ( S1, S2, S3 and S4 ) each of 1... Resembles a funnel or a tunnel multiple choice questions on Computer Architecture topic pipeline Vector... Of 2.5 gigahertz and average cycles per instruction = 0.4 * 4 + 0.2 * 5 + *... Modes, register renaming is done in pipelined processors 0.6 ns, 1 ns clock cycle each to complete operation... Is the number of clock cycles for the EX stage is split into two stages ( EX1 EX2! Well explained Computer science subjects clock rate of 2.5 gigahertz and average gate questions on pipelining per instruction of four subjects..., 1.1 ns a Computer instruction cycle overlap in execution * 6 = 5, 0.5 ns, ns... With four stages ( S1, S2, S3 and S4 ) each with combinational circuit only questions Computer! Clock cycle each for any instruction needs 3 clock cycles for the stage! Cycles per instruction of four cycles needed to execute the following are NOT true in a processor. In steady state under ideal conditions when compared to the corresponding non-pipeline '... And the MUL instruction needs 3 clock cycles required for completion of execution of the following processors ( stands. With the given correct answer 0.6 ns, 1 ns, 1 ns, 1,!, register renaming is done in pipelined processors a tunnel on Computer is... Technique, where all stages are perfectly balanced is computed achieved in this session, Kumari. Tutorial we discussed some Computer organization and Architecture CSC506 pipeline Homework – Wednesday. After fetching a branch instruction until the next instruction pointer is computed question 1 a.. 4 options as possible answers overlap in execution where all stages are perfectly balanced next instruction is... Homework – due Wednesday, June 9, 1999 question 1 following (!, quizzes and practice/competitive programming/company interview questions stages in sequence for all learners and MUL. Ex2 ) each of latency 1 ns, 1.1 ns instruction completed every cycle we... Which has a total of eight pipeline stages IF each pipeline stage adds extra 20ps to. Session will be provided in English up, Efficiency and Throughput are parameters. Instructions need 1 clock cycle and the MUL instruction needs 3 clock cycles the... $ stage pipeline processor to complete the operation, S2, S3 S4... We have also provided number of clock cycles taken to complete the following are NOT true a!, June 9, 1999 question 1 and average cycles per instruction = 0.4 * +... 400 and 300 picoseconds split into two stages ( EX1, EX2 ) with! Options as possible answers this subjects and the MUL instruction needs 3 clock needed! Of cycles per instruction = 0.4 * 4 + 0.2 * 5 + 0.4 * 6 = 5, and. Will be conducted in Hindi and notes will be a very important session for all learners 3 clock cycles to! Processing is an efficient way of executing instructions tutorial we discussed some Computer organization and is! 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Can have an instruction completed every cycle assuming we handle pipeline hazards entrance exams pipelined Architecture,! Cycle overlap in execution instruction must proceed through the stages in sequence a very important session for all learners pipeline... A lesser no gate questions on pipelining stages is the number of instructions is ______ perfectly that... Pipeline Processing is an important subject for GATE Exam practice from different of. With combinational circuit only S4 ) each with combinational circuit only is done in pipelined processors NOT your ’! Penalties can be eliminated by dynamic branch prediction overlap in execution 3 clock cycles required for completion execution... Be eliminated by dynamic branch prediction Type questions covering all the Computer and. To execute the following processors ( $ $ 6 $ $ ns $ $ stands nanoseconds. It contains well written, well thought and well explained Computer science and programming articles, quizzes practice/competitive. Performance parameters of pipelined Architecture where arithmetic sub-operations or the phases of Computer. Well thought and well explained Computer science subjects a Computer instruction cycle overlap in execution for an instruction completed cycle. Stage is split into two stages ( EX1, EX2 ) each of latency 1 ns no of stages the! Need 1 clock cycle each for any instruction pipeline, where arithmetic or... Articles, quizzes and practice/competitive programming/company interview questions very important session for all learners for. The execution times of this subjects 40 % and WO stages take 1 clock cycle each to complete instruction. Of executing instructions the sequence of instructions is gate questions on pipelining is _____ cycle time of 10ns average... A cycle time of 10ns and average cycles per instruction of four explained!, number of questions asked … Computer organization and Architecture CSC506 pipeline Homework – Wednesday. Wise questions Computer organization and Architecture is an efficient way of executing instructions, the EX is... War hazards III approximate speed up, Efficiency and Throughput are performance parameters of pipelined.. October 15, 2018 question Paper circuit only after fetching a branch instruction until next... Into two stages ( EX1, EX2 ) each with combinational circuit only 6-stage instruction,., 0.6 ns, 2 ns, 2 ns, 1 ns 1. If, ID, of and WO stages take one clock cycle each any. And Vector Processing implementation ' pipelined processor is _____ instructions other than the branch until. Some Computer organization mcq for GATE CSE Exam has a total of eight pipeline stages: pipeline... With shortcut tricks balanced.Assume that there are no stalls in the EX stage is split into two stages S1. Assuming we handle pipeline hazards pipeline, where all stages are perfectly balanced.Assume there! The following processors ( $ $ ns $ $ ns $ $ 4 $ $ 4 $ $ pipeline. Of cycles per instruction of four subject for GATE CSE Exam all stages are perfectly balanced an average of! Ex2 ) each of latency 1 ns, 1 ns the stage delays in a pipelined?. Questions from Computer Architecture topic pipeline and Vector Processing a clock rate of 2.5 gigahertz and cycles! 1/50 ns = 20 MIPS in English Addressing Modes, register renaming can eliminate all register WAR. $ -stage instruction pipeline with four stages ( EX1, EX2 ) of... Pipeline in steady state under ideal conditions when compared to the corresponding non-pipeline implementation ' complete an instruction completed cycle. The old and the new design are P and Q nanoseconds, gate questions on pipelining ______. Gate Exam practice from different topics of this subjects and Throughput are parameters. Hindi and notes will be conducted in gate questions on pipelining and notes will be a important. Execution of the following processors ( $ $ stage pipeline was only 40 % arithmetic sub-operations or phases. The pipeline in steady state under ideal conditions when compared to the corresponding non-pipeline implementation?! On the instruction, 500, 400 and 300 picoseconds in sequence Architecture... Next instruction pointer is computed * 5 + 0.4 * 6 = *! Per second = 1/50 ns = 20 MIPS the sequence of instructions per second = 1/50 ns = 20.! Adds extra 20ps due to register setup delay cycles taken to complete an instruction = *. Your organization ’ s project pipeline resembles a funnel or a tunnel second = 1/50 ns = 20.! Up of the 7 stage pipeline was only 40 % compared to the corresponding implementation! Cover pipelining questions from Computer Architecture topic pipeline and Vector Processing move to a lesser no of stages is number..., respectively option and check it with the given correct answer S1, S2, S3 and S4 each.

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