The code in Part A has two data dependencies (R3 and R4), and can be resolved using forwarding and double-pumped register file. However, we still have control dependency for "beq" instruction. To solve the control dependency issue, we add a "nop" after the "beq" instruction, as showsn in Part B. Question: We would like to keep the pipeline full as much as possible and improve the performance. Can we reorder the instructions to avoid NOPs? If so, how?

The code in Part A has two data dependencies (R3 and R4), and can be resolved using forwarding and double-pumped register file. However, we still have control dependency for "beq" instruction. To solve the control dependency issue, we add a "nop" after the "beq" instruction, as showsn in Part B. Question: We would like to keep the pipeline full as much as possible and improve the performance. Can we reorder the instructions to avoid NOPs? If so, how?

Name: A) Identify dependenciesadd R3, R3, R4subR4, R2,beq RO, R2, endaddi R
Uploaded: 2024-03-20T06:51:23.000Z
Channel: Bartleby
Description: A) Identify dependenciesadd R3, R3, R4subR4, R2,beq RO, R2, endaddi R4, R4, 12end:R2, R3B) insert NOPSadd R3, R3, R4subR4, R2, R3beq RO, R2, endnopaddi R4, R4, 12C) reorder for performance The code in Part A has two data dependencies (R3 and R4), an

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

See similar textbooks

Related questions

Q: can you please fix the code to resolve the error:Oh no! You've got an error in your assembly code…

A: Assembler programming which refers to the one it is a type of computer programming that involves…

Q: our simple 2-stage pipeline, we run a particular benchmark pro- gram and fnd that it has 19%…

A: It is defined as a pipeline that has two ends called the input end and the output end. Between these…

Q: In the pipeline system below, which stage is the branch instruction when its result is applied?…

A: Given: IF ID EX MEM WB

Q: Write a minimal sequence of LEGv8 assembly instructions that performs identical operation. The…

A: We need to write code using LEGv8 assembly instructions, to perform y=abs(x).

Q: Can you plese fic this error and and other errors in the code using the LC3 simulator Oh no! You've…

A: Certainly! Let's address the error you encountered and any other potential issues in the code.

Q: We have a single stage, non-pipelined machine and a pipelined machine with 5 pipeline stages. The…

A: Hello studentGreetingsIn the realm of computer architecture and design, the choice between a…

Q: A) Identify 1w add 1w add dependencies R15, 0(R2) R14, R15, R15 R16, 4(R2) R17, R16, R16 B) Insert…

A: SOLUTION -Given,lw R15, 0(R2) add R14, R15, R15lw R16, 4(R2)add R17, R16, R16

Q: lem in the pipeline of Teletraan-2. Instruction (2) will be waiting for the result generated by…

A: The problem identified in the pipeline of Teletraan-2 can result in a significant delay in the…

Q: we would like to keep the pipeline full as much as possible and improve the performance. can we…

A: A pipeline refers to a method of improving the total efficiency and performance of processors by…

Q: What is the result produced in AX from executing (IMUL DH) instruction, giving that the second…

A: Dear Student, IMUL DH will multiply DH with AH and will store the result in higher bits of AX, As we…

Q: Suppose the instruction set contained no rotate instructions. Show how you would useSHR and a…

A: Let us consider a set of instruction contained for no rotate instructions.By using the SHR and…

Q: lw $s1, 24($t3) add $t2, $s1, $t1 In the standard five stage, pipelined machine, consider the…

A: Here, last Option is a Correct d. It is not possible to avoid Data Hazard issues here and…

Q: For our simple 2-stage pipeline, we run a particular benchmark program and find that it has 19%…

A: Introduction: The 2-stage pipelined CPU will breakdown the stages between the instruction fetch and…

Q: Registers in RISC-V are 64-bit. For the sake of simplicity, consider the following instructions…

A: RISC-V which is an open standard instruction set architecture that are based on established RISC…

Q: When we execute such a program: (1) R1 = 3 + 5 (2) R2 = R1 / 4 (3) R3 = 4 * 16 (4) R4 = R3 * 2 We…

A: Answer is

Q: Why does MIPS not have add label_dst,label_srcl, label_src2, instructions in its ISA (there are at…

A: Given: Why does MIPS not have add label_dst, label_src1, label_src2, instructions in its ISA (there…

Q: No forwarding is assumed - and assume no hazards are present We will run the following code on the…

A: Since , no hazards are present , Therefore no stalls are present RISC-V pipeline have five stage…

Q: Describe the modifications to the single clock cycle datapath that would be needed to implement the…

A: A single-cycle datapath is a type of processor design in which each instruction is executed in a…

Q: Write a logical shift instruction that multiplies the contents of EAX by 16. Write a logical shift…

A: a logical shift instruction that multiplies the contents of EAX by 16. a logical shift instruction…

Q: Assume that your program has 2400 memory accesses in 20,000 instructions. The instruction cache miss…

A: Answer: (B)Explanation: Since, L2 cache is shared between Instruction and Data. Average Instruction…

Q: 1A.What condition needs to be satisfied so that converting from a nonpipelied to a pipelined machine…

A: .What condition needs to be satisfied so that converting from a non-piped to a pipelined machine the…

Q: 4. a = b +e; c = b +f; The generated LEGV8 code for the above C code segment, is given below:…

A: There is a data hazard in this code segment, specifically a RAW (Read After Write) hazard between…

Q: The 8051 supports both conditional and unconditional jumps. State how they differ and then contrast…

A: Conditional jumps are a type of branch instruction in the 8051 assembly language that jumps to a…

Topic Video

Question

A) Identify dependencies
add R3, R3, R4
sub
R4, R2,
beq RO, R2, end
addi R4, R4, 12
end:
R2, R3
B) insert NOPS
add R3, R3, R4
sub
R4, R2, R3
beq RO, R2, end
nop
addi R4, R4, 12
C) reorder for performance

The code in Part A has two data dependencies (R3 and R4), and can be resolved using forwarding and double-pumped register file. However,
we still have control dependency for "beq" instruction. To solve the control dependency issue, we add a "nop” after the “beq” instruction, as
showsn in Part B.
Question: We would like to keep the pipeline full as much as possible and improve the performance. Can we reorder the instructions to
avoid NOPs? If so, how?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: Branch delay slot

VIEW

Step 2: Find part a and part b

VIEW

Step 3: solve c

VIEW

Solution

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

For the whole question, pseudo-instructions are not allowed except “j target_label”and “jr ra”. One suggestion for assembly programming problems is that you can includecomments to one or a block of instructions. Consider a RISC-V assembly function func1. func1 has three passingarguments stored in registers a0, a1 and a2, uses temporary registers t0-t3 andsaved registers s4–s10. func1 needs to call func2 and other functions may call func1also. func2 has two passing arguments stored in registers a0 and a1, respectively. Infunc1, after the program returns to func1 from func2, the code needs the originalvalues stored in registers t1 and a0 before it calls func2. (a) How many words are the stack frames of function func1?(b) Indicate which registers are stored on the stack of func1.
In some instruction sets, call and return instructions make use of a RR register to hold the return address rather than doing so on the stack. Show how the code in the above problem should be changed if call and return instructions used a RR register for return addresses rather than the stack. Don't change the program's function. 500 MOV R1, X 501 MOV R2, Y 502 MOV R3, Z 503 PUSH R1 504 CALL 550 505 POP R3 506 CALL 560 507 HALT · · 550 PUSH R2 551 CALL 560 552 POP R2 553 RET · · 560 PUSH R3 561 PUSH R1 562 POP R2 563 POP R1 564 RET
How many trap service routines could theoretically be created for the LC-3, given the format of the TRAP instruction? (hint: how many bits are used for the trap vector?) 8 64 O 256 О 16к 32
Can you explain what would happen if an unapproved instruction is sent to VA page 30? In the following cases, a TLB controlled by software would be faster than one maintained by hardware:
Consider the code below that runs in the five stage pipeline that does not handle any data hazard (no forwarding and no write/read register in the same cycle). Add NOP operations so that the code runs correctly. You may draw a time diagram to help you answer the question. ADDI X1, X2, #3 ADD X3, X1, X2 ADDI X4, X1, #13 ADD X5, X3, X2