Question 1: Problems in this exercise refer to the following sequence of instructions : LW $5,...
Question 1: Problems in this exercise refer to the following sequence of instructions
: LW $5, -16($5)
SW $5, -16($5)
ADD $5, $5, $5
A) Indicate dependences and their type. (40 Points)
B) Assume there is not forwarding in this pipeline processor, indicate hazards and add NOP instructions to eliminate them.
C) Assume there is full forwarding, indicate hazards and add NOP instructions to eliminate unresolved cases. The remaining problem in this exercise assumes the following clock cycle times: Without forwarding With full forwarding With ALU-ALU forwarding only 200 ps 250 ps 220 ps
D) What is the total execution time of this instruction sequence without forwarding and with full forwarding? What is the speed-up achieved by adding full forwarding to a pipeline that had no forwarding?
E) What is the total execution time of this instruction sequence with only ALU-ALU forwarding? What is the speed-up over a no-forwarding pipeline?
Homework Answers
Add Answer to:
Question 1: Problems in this exercise refer to the following
sequence of instructions
: LW $5,...
In this exercise, we examine how data dependences affect execution in the basic 5-stage pipeline described...
In this exercise, we examine how data dependences affect execution in the basic 5-stage pipeline described in Section 4.5. Problems in this exercise refer to th following sequence of instructions: addi $2,$2,22 SW $3,20($2) OR $4,$2,$3 Also, assume the following cycle times for each of the options related to forwarding: Without Forwarding With Full Forwarding 300ps With ALU-ALU Forwarding Only 250ps 290ps 4.9.1 [10] <4.5> Indicate dependences and their type. 4.9.2 [10] <S4.5> Assume there is no forwarding in this...
Problems in this question refer to the following sequence of instructions: I1 w $%16, -100 ($6) I2: 1w $4, 8 ($16) I3: add $5, $4, $4 Also, assume the following cycle times for each of the optio...
Problems in this question refer to the following sequence of instructions: I1 w $%16, -100 ($6) I2: 1w $4, 8 ($16) I3: add $5, $4, $4 Also, assume the following cycle times for each of the options related to forwarding: With ALU-ALU Forwarding Only 220ps With Full Forwarding 240ps Without Forwarding 180ps 4. (1096) What is the total execution time of this instruction sequence without forwarding and with full forwarding? What is the speedup achieved by adding full forwarding to...
1. Given the following instruction sequence for the MIPS processor with the standard 5 stage pipeline $10, S0. 4 addi lw S2.0(S10) add sw S2,4(510) $2, $2, $2 Show the data dependences between th...
1. Given the following instruction sequence for the MIPS processor with the standard 5 stage pipeline $10, S0. 4 addi lw S2.0(S10) add sw S2,4(510) $2, $2, $2 Show the data dependences between the instructions above by drawing arrows between dependent instructions (only show true/data dependencies). a. Assuming forwarding support, in what cycle would the store instruction write back to memory? Show the cycle by cycle execution of the instructions as they execute in the pipeline. Also, show any stalls...
Given the following sequence of instructions: lw $s2, 0($s1) //1 lw $s1, 40($s3) //2 sub $s3,...
Given the following sequence of instructions: lw $s2, 0($s1) //1 lw $s1, 40($s3) //2 sub $s3, $s1, $s2 //3 add $s3, $s2, $s2 //4 or $s4, $s3, $zero //5 sw $s3, 50($s1) //6 a. List the read after write (current instruction is reading certain registers which haven’t been written back yet) data dependencies. As an example , 3 on 1 ($s2) shows instruction 3 has data dependency on instruction 1 since it is reading register $s2. b. Assume the 5...
Given the following sequence of instructions to be executed on a 5-stage pipelined datapath as decrypted...
Given the following sequence of instructions to be executed on a 5-stage pipelined datapath as decrypted in our textbook: I1: add $8, $12,$10 12: SW $9,0 ($8) 13: lw $8,4($9) I4: and $12,$12,$8 15: SW $8,0($9) a. List true dependencies in the given sequence in the format of (register involved producer instruction, consumer instruction). Use labels to indicate instructions For example: ($0, I10, I11) means a true dependence between instruction I10 and I11: value of register $0 is generated by...
We execute the following instruction sequence (data hazards may exhibit in the sequence) on a MIPS...
We execute the following instruction sequence (data hazards may exhibit in the sequence) on a MIPS 5-stage pipeline with forwarding and stall features implemented. Draw a graphical representation for the execution of the instruction sequence that clearly shows (1) forwarding path (if any); (2) stall cycles (if any); and (3) total cycles needed for the execution. lw R8, 0x0020(R10) add R9, R8, R10 sw R8, 0x0040(R10)
(60 points) The following instructions are executed on the 5-stage MIPS pipelined datapath. add r...
Computer architecture help:
(60 points) The following instructions are executed on the 5-stage MIPS pipelined datapath. add r5,r2, r1 lw r3, 4(r5) lw r2, 0(r2) or r3, r5, r3 sw r3, 0(r5) (a) (20 points) List the data hazards in the above code. For each data hazard identified, clearly mark the source and the destination. For example you can say, there is a data hazard from instruction X to instruction Y on register Z. (b) (20 points) Assume there is...
Consider the following code to be executed on a pipelined processor lw $s1, 40(Ss6) add $s6,...
Consider the following code to be executed on a pipelined processor lw $s1, 40(Ss6) add $s6, $s2, $s2 sw Ss6, 48(Ss1) a. Include stalls/nops in the code so it executes correctly in the cases of (i) No forwarding (ii) ALU-ALU for warding, (iii) Full forwarding b. In each case calculate the number of clock cycles required to execute the code c. Assume further that the clock cycle time is 110 ps with no forwarding, 120 ps with ALU-ALU forwarding and...
We have the following sequence of instructions in MIPS lw $t4, 4($s1) or $t1, $t2, $t3...
We have the following sequence of instructions in MIPS lw $t4, 4($s1) or $t1, $t2, $t3 or $t2, $t1, $t4 or $t1, $t1, $t2 1) Indicate any hazards and what the hazard types are. 2) Assume there is no forwarding in this pipelined processor and each stage takes 1 cycle. Draw the pipeline chart and calculate how many cycles are consumed 3) Assume there is forwarding in this pipelined processor and each stage takes 1 cycle. Draw the pipeline chart...
Q4. (20 points) Consider the following sequence of instructions being processed on the 5-stage RISC-V pipelined...
Q4. (20 points) Consider the following sequence of instructions being processed on the 5-stage RISC-V pipelined processor: lw r4, 100 (r2) add r5, r2, r3 sub r6, r4, r5 and r7, r2, r5 I. Identify all the data dependencies in the above instruction sequence. For each dependency, indicate the two instructions and the register that causes the dependency. I Assume that the pipelined uses full forwarding. Draw a pipelined diagram that represents the flow of instructions through the pipeline during...
In this exercise, we examine how data dependences affect execution in the basic 5-stage pipeline described in Section 4.5. Problems in this exercise refer to th following sequence of instructions: addi $2,$2,22 SW $3,20($2) OR $4,$2,$3 Also, assume the following cycle times for each of the options related to forwarding: Without Forwarding With Full Forwarding 300ps With ALU-ALU Forwarding Only 250ps 290ps 4.9.1 [10] <4.5> Indicate dependences and their type. 4.9.2 [10] <S4.5> Assume there is no forwarding in this...
Problems in this question refer to the following sequence of instructions: I1 w $%16, -100 ($6) I2: 1w $4, 8 ($16) I3: add $5, $4, $4 Also, assume the following cycle times for each of the options related to forwarding: With ALU-ALU Forwarding Only 220ps With Full Forwarding 240ps Without Forwarding 180ps 4. (1096) What is the total execution time of this instruction sequence without forwarding and with full forwarding? What is the speedup achieved by adding full forwarding to...
1. Given the following instruction sequence for the MIPS processor with the standard 5 stage pipeline $10, S0. 4 addi lw S2.0(S10) add sw S2,4(510) $2, $2, $2 Show the data dependences between the instructions above by drawing arrows between dependent instructions (only show true/data dependencies). a. Assuming forwarding support, in what cycle would the store instruction write back to memory? Show the cycle by cycle execution of the instructions as they execute in the pipeline. Also, show any stalls...
Given the following sequence of instructions to be executed on a 5-stage pipelined datapath as decrypted in our textbook: I1: add $8, $12,$10 12: SW $9,0 ($8) 13: lw $8,4($9) I4: and $12,$12,$8 15: SW $8,0($9) a. List true dependencies in the given sequence in the format of (register involved producer instruction, consumer instruction). Use labels to indicate instructions For example: ($0, I10, I11) means a true dependence between instruction I10 and I11: value of register $0 is generated by...
Computer architecture help:
(60 points) The following instructions are executed on the 5-stage MIPS pipelined datapath. add r5,r2, r1 lw r3, 4(r5) lw r2, 0(r2) or r3, r5, r3 sw r3, 0(r5) (a) (20 points) List the data hazards in the above code. For each data hazard identified, clearly mark the source and the destination. For example you can say, there is a data hazard from instruction X to instruction Y on register Z. (b) (20 points) Assume there is...
Consider the following code to be executed on a pipelined processor lw $s1, 40(Ss6) add $s6, $s2, $s2 sw Ss6, 48(Ss1) a. Include stalls/nops in the code so it executes correctly in the cases of (i) No forwarding (ii) ALU-ALU for warding, (iii) Full forwarding b. In each case calculate the number of clock cycles required to execute the code c. Assume further that the clock cycle time is 110 ps with no forwarding, 120 ps with ALU-ALU forwarding and...
Q4. (20 points) Consider the following sequence of instructions being processed on the 5-stage RISC-V pipelined processor: lw r4, 100 (r2) add r5, r2, r3 sub r6, r4, r5 and r7, r2, r5 I. Identify all the data dependencies in the above instruction sequence. For each dependency, indicate the two instructions and the register that causes the dependency. I Assume that the pipelined uses full forwarding. Draw a pipelined diagram that represents the flow of instructions through the pipeline during...
Most questions answered within 3 hours.
-
Why is QE a controversial monetary policy tool.
A. It may lead to excessive inflation.B. By...
asked 50 minutes ago -
Principles of Programming midterm study guide help!
1.)
______ Which of the following would reference the...
asked 20 minutes ago -
Romeo wishes to throw a bouquet of flowers to Juliet, who is on
a second-story balcony,...
asked 34 minutes ago -
A finite potential well has depth U0 = 2.78 eV . What is the
penetration distance...
asked 1 hour ago -
1. The bus bars of a power station are in two sections A and B
separated...
asked 1 hour ago -
Fiscal policy is the deliberate manipulation of taxes and
government spending to alter GDP, employment, inflation...
asked 2 hours ago -
evaluating an expression using only one digit and + and - as
operators ....3+5-1+7-5+8
-----------------------
stack...
asked 2 hours ago -
Two concentric current loops lie in the same plane. The smaller
loop has a radius of...
asked 2 hours ago -
1)Which of the following is an
important difference between qualified and nonqualified retirement
plans?
a. Qualified...
asked 2 hours ago -
What's the streaming business's problem on the
horizon?
asked 3 hours ago -
I need help with writing the conclusion for this online lab
report
Abstract
By testing the...
asked 4 hours ago -
For the reaction 1N2+3H2-----> 2NH3, would the reaction rate
trend be: delta[NH3]/ delta t = -2...
asked 4 hours ago