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A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.
ADD R5, R0, R1 ; R5 ← R0 + R1
MUL R6, R2, R5 ; R6 ← R2 * R5
SUB R5, R3, R6 ; R5 ← R3 - R6
DIV R6, R5, R4 ; R6 ← R5/R4
STORE R6, X ; X ← R6
The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,
  • a)
    2, 2, 4
  • b)
    3, 2, 3
  • c)
    4, 2, 2
  • d)
    3, 3, 2
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A pipelined processor uses a 4-stage instruction pipeline with the fol...
(C) is the correct option for this question:
RAW
1. I1 - I2 (R5)
2. I2 - I3 (R6)
3. I3 - I4 (R5)
4. I4 - I5 (R6)
WAR
1. I2 - I3 (R5)
2. I3 - I4 (R6)
WAW
1. I1 - I3 (R5)
2. I2 - I4 (R6)
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Most Upvoted Answer
A pipelined processor uses a 4-stage instruction pipeline with the fol...
Understanding Dependencies in Instruction Sequence
In the given instruction sequence, we need to analyze the dependencies between instructions for Read-After-Write (RAW), Write-After-Read (WAR), and Write-After-Write (WAW).
Instruction Sequence
- ADD R5, R0, R1 ; R5 = R0 + R1
- MUL R6, R2, R5 ; R6 = R2 * R5
- SUB R5, R3, R6 ; R5 = R3 - R6
- DIV R6, R5, R4 ; R6 = R5 / R4
- STORE R6, X ; X = R6
Identifying Dependencies
1. Read-After-Write (RAW)
- This occurs when an instruction needs to read a value that a previous instruction writes.
- Dependencies:
- MUL R6, R2, R5 (R5 is written by ADD before being read)
- SUB R5, R3, R6 (R6 is written by MUL before being read)
- DIV R6, R5, R4 (R5 is written by SUB before being read)
Total RAW Dependencies: 3
2. Write-After-Read (WAR)
- This occurs when an instruction writes to a location before a previous instruction reads it.
- Dependencies:
- None in this sequence, as no subsequent instruction writes to a register before it is read by a previous instruction.
Total WAR Dependencies: 0
3. Write-After-Write (WAW)
- This occurs when two instructions write to the same location.
- Dependencies:
- R5 is written in both ADD and SUB.
- R6 is written in both MUL and DIV.
Total WAW Dependencies: 2
Final Count of Dependencies
- RAW: 3
- WAR: 0
- WAW: 2
Thus, the correct answer is option 'C': 3, 0, 2.
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A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 R0 + R1MUL R6, R2, R5 ; R6 R2 * R5SUB R5, R3, R6 ; R5 R3 - R6DIV R6, R5, R4 ; R6 R5/R4STORE R6, X ; X R6The IF, ID and WB stages take 1 clock cycle each. The EX stage takes 1 clock cycle each for the ADD, SUB and STORE operations, and 3 clock cycles each for MUL and DIV operations. Operand forwarding from the EX stage to the ID stage is used. The number of clock cycles required to complete the sequence of instructions is

A pipelined processor uses a 4-stage instruction pipeline with the following stages: instruction fetch (IF), Instruction decode (ID), Execute (EX) and Write-back (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P+ G))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3and R4respectively, before the execution of the instruction sequence.Q. The IF, ID and WB stages take 1 clock cycle each. The EX stage takes 1 clock cycle each for the ADD, SUB and STORE operations, and 3 clock cycles each for MUL and DIV operations. Operand forwarding from the EX stage to the ID stage is used. The number of clock cycles required to complete the sequence of instructions is

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A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer?
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A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer?.
Solutions for A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE). Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.
Here you can find the meaning of A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer?, a detailed solution for A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A pipelined processor uses a 4-stage instruction pipeline with the following stages: Instruction fetch (IF), Instruction decode (ID), Execute (EX) and Writeback (WB). The arithmetic operations as well as the load and store operations are carried out in the EX stage. The sequence of instructions corresponding to the statement X = (S - R * (P + Q))/T is given below. The values of variables P, Q, R, S and T are available in the registers R0, R1, R2, R3 and R4 respectively, before the execution of the instruction sequence.ADD R5, R0, R1 ; R5 ← R0 + R1MUL R6, R2, R5 ; R6 ← R2 * R5SUB R5, R3, R6 ; R5 ← R3 - R6DIV R6, R5, R4 ; R6 ← R5/R4STORE R6, X ; X ← R6The number of Read-After-Write (RAW) dependencies, Write-After-Read( WAR) dependencies, and Write-After-Write (WAW) dependencies in the sequence of instructions are, respectively,a)2, 2, 4b)3, 2, 3c)4, 2, 2d)3, 3, 2Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
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