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...
Show how the following four instructions will be executed within the MIPS pipeline. Also, show the forwarding paths needed. Use the graphical notation showing all stages of MIPS pipeline. Indicate all data dependencies. Which dependencies are data hazards that will be resolved via forwarding? Which dependencies are data hazards that will cause a stall? add $s3, $s4, $s6 sub $s5, $s5, $s2 lw $s7, 100 ($s5) add $s8, $s7, $s2
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...
Using graphical representation, show the pipeline execution of the following instructions on the 5-stage pipeline with hazard detection and forwarding as implemented in Lecture 6. Clearly indicate the forwarding path(s) and stall(s). Note: highlight the forwarding path and use bubbles (or O) for stalls. Lw R20, 0x0100(R18) Add R14, R20, R16 Sw R18, 0x0110(R16) Or R12, R14, R20 Lw R18, 0x0100(R12) instr CC1 CC2 CC3 lw
Computer organization 6) Given the MIPS five stage pipeline and the following instruction sets: [30 pts, 10 pts each] instruction set #1 1w $1, 40 ($6) add $2, $3, $1 add $1, $6, $4 and $1, $1, $4 sw $2, 20 ($4) instruction set #2 add $1, $5, $3 sw$1, 0 ($2) lw $1, 4 ($2) add $5, $5, $1 sw$1, 8 ($2) a) If there is no forwarding or hazard detection, write the instructions (same order) and insert nop's...
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)
7 [24 marks] Consider the following MIPS code segment that is executed on a 5-stage pipeline architecture that does not implement forwarding or stalling in hardware. (1) add $4, $1, $1 (2) add $7, $4, $9 (3) lw $2, 40($8) (4) sub $8, $1, $2 (5) sw $8, 80(S2) (6) sub $2, $8, $4 (7) lw S8, 2($1) (8) add $8, $4, S2 Identify the data dependences that cause hazards. You are to use the following format to inform each...
We’re executing the following instruction sequences on a 5-stage MIPS pipeline. Add R8, R9, R10 Lw R14, 0x0020(R12) Or R16, R9, R10 Sw R12, 0x0020(R10) Addi R20, R21, 5 (1) At cycle 5, what action (add, sub, and, or) is ALU performing? (2) At cycle 5, what is the action (read, write, no action) of DM? (3) At cycle 5, which registers are being read out? (4) What is the speedup comparing with the unpipelined execution of the same instruction...
We’re executing the following instruction sequences on a 5-stage MIPS pipeline. Add R8, R9, R10 Lw R14, 0x0020(R12) Or R16, R9, R10 Sw R12, 0x0020(R10) Addi R20, R21, 5 (1) At cycle 5, what action (add, sub, and, or) is ALU performing? (2) At cycle 5, what is the action (read, write, no action) of DM? (3) At cycle 5, which registers are being read out? (4) What is the speedup comparing with the unpipelined execution of the same instruction...
Question 11 add sw addi bne The classic five-stage pipeline MIPS architecture is used to execute the code fragments in this problem. Assume the followings • The architecture fully supports forwarding, • Register write is done in the first half of the clock cycle; register read is performed in the second half of the clock cycle, • Branches are resolved in the third stage of the pipeline and the architecture does not utilize any branch prediction med • Register R4...
add SW addi bne The classic five-stage pipeline MIPS architecture is used to execute the code fragments in this problem. Assume the followings: The architecture fully supports forwarding, • Register write is done in the first half of the clock cycle; register read is performed in the second half of the clock cycle, • Branches are resolved in the third stage of the pipeline and the architecture does not utilize any branch prediction mechanism, • Register R4 is initially 100....