1. Suppose we have a 5-stage pipeline CPU and run the following instructions: or $tl, $t2, $t3 or...
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...
The following MIPS program is to be run on a MIPS pipeline processor of 5 stages (IF-ID-EX-MEM-WB). Work out and diagram the optimal pipeline schedule using full forwarding from EX or MEM stages to any other stage, Draw the pipeline execution diagram for this code and then compute the pipeline CPI: addi $t6, $t6, 10 sub $t5, $t6, $t4 srl $t5, $t5, 2 sw $t5, 20($t5) lw $t2, 0($t6) add $t7, $t2, $t3 beq $t5, $t7, End
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...
4. Suppose the MIPS code below is running on the pipeline processor we introduced in the course: Original code: Reordered code: 11: Jw $50, $a0(4) 12: sub $s1, $50, $s3 13: add $81, $si, $s2 14: lw $t1, $a0(8) 15: Jw $t2, $a0(12) 16: add $s3, $t1, $t2 a) List all Read-After-Write (RAW) dependencies in the code. Highlight them over the code above. b) Assume there is no forwarding hardware capability available. How many cycles it takes to run the...
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...
We implemented a new 5-stage pipeline with the following features: the delay by data and control hazards are as follows: 1 cycle stall for the load by immediate use, 2 cycle stalls for branch taken. Assume we now run 10,000 instructions on the pipeline, among them: (1) 35% are lw instructions. 10% of lw instructions are followed by instructions that use lw result immediately in ALU input; (2)15% are branch instructions with 40% possibility of branch taken; (3) the remaining...
For Questions 1 to 5 In the following code sequence, we need to stall the RISC-V pipeline to resolve the load-use data hazard i2: add x9, x8, x10 i3: addi x9, x9, -1 14: sd x9, 0(x5) Consider the cycle when i1 is in the EX stage, i2 is in the ID stage, and i3 is in the IF stage. Question1 1 pts What is the value of ID/EX.MemRead in this cycle? For Questions 1 to 5 In the following...
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...
Ch04.2. [3 points] Consider the following assembly language code: I0: ADD R4 R1RO I1: SUB R9R3 R4; I2: ADD R4 - R5+R6 I3: LDW R2MEMIR3100]; 14: LDW R2 = MEM [R2 + 0]; 15: STW MEM [R4 + 100] = R3 ; I6: AND R2R2 & R1; 17: BEQ R9R1, Target; I8: AND R9 R9&R1 Consider a pipeline with forwarding, hazard detection, and 1 delay slot for branches. The pipeline is the typical 5-stage IF, ID, EX, MEM, WB MIPS...