Which of the instructions in the list of ARM machine instructions could lead to a control...
Which of the instructions in the list of ARM machine instructions could lead to a control hazard in a pipelined implementation of the ARM instruction set?
Homework Answers
Here are the instructions for pipelined implementation of ARM instruction set –
- Branch with Link (BL).
- Single Data Swap (SWP).
- Multiply and Multiply-Accumulate (MLA, MUL).
- Coprocessor Data Operational Instructions (CDI).
- Branch and Exchange (BX).
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Which of the instructions in the list of ARM machine
instructions could lead to a control...
6. We can choose pipelined or non-pipelined implementation like below. For a program with 20% ALU...
Computer Architecture
6. We can choose pipelined or non-pipelined implementation like below. For a program with 20% ALU instructions, 10% control instructions and 70% memory instructions, which design will be faster? Give a quantitative CPI average for each case. (you have to write all process like CPI, CPI time, etc) Non-Pipelined version Parameter Clock Rate CPI for ALU instruction CPI for Control instruction 2 CPI for Memory instruction3 Pipelined version 250 MHz 600 MHz
6. We can choose pipelined or...
(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...
For pipelined execution, there are multiple instructions on the pipeline for concurrent execution. How the control...
For pipelined execution, there are multiple instructions on the pipeline for concurrent execution. How the control unit is designed inside the processor? Choose one most appropriate answer below. Use multiple control units each controlling the execution of one instruction. Control signals are generated at ID stage, and propagates via pipeline buffers to next stage(s) along with instruction execution. Control signals are pre-stored in the pipeline buffers. When an instruction reaches to a certain stage, it will use the signals stored...
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...
A program that executes 12.3x107 instructions is run on a pipelined processor. The table below provides...
A program that executes 12.3x107 instructions is run on a pipelined processor. The table below provides the percentage of executed instructions for each type of instruction. Instruction Executed P ipeline CPU type instructions (%) w/o hazards ALU 29.4 Load 29.7 Store 14.7 Branch 26.2 2 (w/o prediction) 27% of the load instructions are followed by instructions that need the data being loaded, 47% of the branches are actually.not taken, please assume not taken prediction. a) Please determine the overall cycles...
Computer Architecture 14. Fill in the blanks below with the most appropriate term or concept discussed...
Computer Architecture 14. Fill in the blanks below with the most appropriate term or concept discussed in this chapter: A. ---------------The time required for the first result in a series of computations to emerge from a pipeline. B. ---------------This is used to separate one stage of a pipeline from the next. C. ---------------Over time, this tells the mean number of operations completed by a pipeline per clock cycle. D. ---------------The clock cycles that are wasted by an instruction-pipelined processor due...
02 A CISC (Complex Instructions set Computer) machine has CPls of 4 for loadstore, 3 for...
02 A CISC (Complex Instructions set Computer) machine has CPls of 4 for loadstore, 3 for ALU/branch, 10 for call/return and CPU clock rate of 1.75 GHz. RISC (Reduced Instructions set Computer) machine has a CPI of 1.2 (as it is pipelined) and CPU clock rate of 1 GHz. CISC machine uses complex instructions so the CISC version of the benchmark is 40% less than the same benchmark on the RISC machine (that is, CISC IC is 40% less than...
Need help as soon as possible. Thanks! 4. (a) Write a short list of ARM instructions...
Need help as soon as possible. Thanks!
4. (a) Write a short list of ARM instructions to add two 128-bit numbers together. The first number is placed in registers 10, 11, 12, 13 and the second number is places in registers 14, 15, 16, 17. The result shall be placed be placed in registers 18, 19, r10, rll. You may assume that smaller register number will contain the less significant word. (10 marks) (6) For each value of N below,...
Which of the following are true of pipelined datapaths (as opposed to non-pipelined datapaths): Select all...
Which of the following are true of pipelined datapaths (as opposed to non-pipelined datapaths): Select all that apply The amount of time it takes for an instruction to go through the pipeline is higher because of setup and hold times of latches Clock cycles per instruction generally goes up More control is needed More latches/registers are required Instruction throughput, i.e., number of instructions executed per cycle, generally goes up
(10pts) (A) Identify hazards (including type of the hazard) in the following code. Write hazards next to each instruction. Write none if there is no hazard. Assume that each instruction could hav...
(10pts) (A) Identify hazards (including type of the hazard) in the following code. Write hazards next to each instruction. Write none if there is no hazard. Assume that each instruction could have more than one hazard and I5 does not create a control hazard, Type of Hazards Instructions I: LABEL:lw Ss2, 0(Ss0) none 12: 13: 14 15: 16: add Ss1, Ss6, $sl add Stl, Ss0, $s2 and St1, St, $s3 sw St1 0(Ss0) beq St1, St7, LABEL (B) How many...
Computer Architecture
6. We can choose pipelined or non-pipelined implementation like below. For a program with 20% ALU instructions, 10% control instructions and 70% memory instructions, which design will be faster? Give a quantitative CPI average for each case. (you have to write all process like CPI, CPI time, etc) Non-Pipelined version Parameter Clock Rate CPI for ALU instruction CPI for Control instruction 2 CPI for Memory instruction3 Pipelined version 250 MHz 600 MHz
6. We can choose pipelined or...
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...
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...
A program that executes 12.3x107 instructions is run on a pipelined processor. The table below provides the percentage of executed instructions for each type of instruction. Instruction Executed P ipeline CPU type instructions (%) w/o hazards ALU 29.4 Load 29.7 Store 14.7 Branch 26.2 2 (w/o prediction) 27% of the load instructions are followed by instructions that need the data being loaded, 47% of the branches are actually.not taken, please assume not taken prediction. a) Please determine the overall cycles...
02 A CISC (Complex Instructions set Computer) machine has CPls of 4 for loadstore, 3 for ALU/branch, 10 for call/return and CPU clock rate of 1.75 GHz. RISC (Reduced Instructions set Computer) machine has a CPI of 1.2 (as it is pipelined) and CPU clock rate of 1 GHz. CISC machine uses complex instructions so the CISC version of the benchmark is 40% less than the same benchmark on the RISC machine (that is, CISC IC is 40% less than...
Need help as soon as possible. Thanks!
4. (a) Write a short list of ARM instructions to add two 128-bit numbers together. The first number is placed in registers 10, 11, 12, 13 and the second number is places in registers 14, 15, 16, 17. The result shall be placed be placed in registers 18, 19, r10, rll. You may assume that smaller register number will contain the less significant word. (10 marks) (6) For each value of N below,...
Which of the following are true of pipelined datapaths (as opposed to non-pipelined datapaths): Select all that apply The amount of time it takes for an instruction to go through the pipeline is higher because of setup and hold times of latches Clock cycles per instruction generally goes up More control is needed More latches/registers are required Instruction throughput, i.e., number of instructions executed per cycle, generally goes up
(10pts) (A) Identify hazards (including type of the hazard) in the following code. Write hazards next to each instruction. Write none if there is no hazard. Assume that each instruction could have more than one hazard and I5 does not create a control hazard, Type of Hazards Instructions I: LABEL:lw Ss2, 0(Ss0) none 12: 13: 14 15: 16: add Ss1, Ss6, $sl add Stl, Ss0, $s2 and St1, St, $s3 sw St1 0(Ss0) beq St1, St7, LABEL (B) How many...
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