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 and calculate how many cycles are consumed
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We have the following sequence of instructions in MIPS
lw $t4, 4($s1)
or $t1, $t2, $t3...
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...
1. Suppose we have a 5-stage pipeline CPU and run the following instructions: or $tl, $t2, $t3 or...
1. Suppose we have a 5-stage pipeline CPU and run the following instructions: or $tl, $t2, $t3 or $t2, $tl, $t4 or $tl, $tl, $t2 1.1. What dependencies are there in the code? 1.2. Suppose there is no forwarding. What hazard may happen? Draw the pipeline diagram and insert stall (nop) to prevent these hazard. 1.3. If the pipeline has full forwarding. Are there still hazard? If so, draw the pipeline diagram and insert stall (nop) to prevent the hazard....
(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...
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)
4. Suppose the MIPS code below is running on the pipeline processor we introduced in the...
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...
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...
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...
How many clock cycles would be required to execute the following sequence of instructions? add $t1,...
How many clock cycles would be required to execute the following sequence of instructions? add $t1, $t2, $t3 #1 lw $t3, 0($t1) #2 add $t2, $t2, $t3 #3 add $t3, $t1, $t2 #4
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 found that the instruction fetch and memory stages are the critical path of our 5-stage...
We found that the instruction fetch and memory stages are the
critical path of our 5-stage pipelined MIPS CPU. Therefore, we
changed the IF and MEM stages to take two cycles
while increasing the clock rate. You can assume that the register
file is written at the falling edge of the clock.
Assume that no pipelining optimizations have been made, and that
branch comparisons are made by the ALU. Here’s how our pipeline
looks when executing two add instructions:
Clock...
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...
1. Suppose we have a 5-stage pipeline CPU and run the following instructions: or $tl, $t2, $t3 or $t2, $tl, $t4 or $tl, $tl, $t2 1.1. What dependencies are there in the code? 1.2. Suppose there is no forwarding. What hazard may happen? Draw the pipeline diagram and insert stall (nop) to prevent these hazard. 1.3. If the pipeline has full forwarding. Are there still hazard? If so, draw the pipeline diagram and insert stall (nop) to prevent the hazard....
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...
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...
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...
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 found that the instruction fetch and memory stages are the
critical path of our 5-stage pipelined MIPS CPU. Therefore, we
changed the IF and MEM stages to take two cycles
while increasing the clock rate. You can assume that the register
file is written at the falling edge of the clock.
Assume that no pipelining optimizations have been made, and that
branch comparisons are made by the ALU. Here’s how our pipeline
looks when executing two add instructions:
Clock...
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