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A program having 10 instructions (without Branch and Call instructions) is executedon non-pipeline and pipeline processors. All instructions are of same length andhaving 4 pipeline stages and time required to each stage is 1nsec. (Assume thefour stages as Fetch Instruction ,Decode Instruction, Execute Instruction, WriteOutput)i.) Calculate time required to execute the program on Non-pipeline and Pipelineprocessor.ii) Show the pipeline processor with a diagram

Question

A program having 10 instructions (without Branch and Call instructions) is executedon non-pipeline and pipeline processors. All instructions are of same length andhaving 4 pipeline stages and time required to each stage is 1nsec. (Assume thefour stages as Fetch Instruction ,Decode Instruction, Execute Instruction, WriteOutput)i.) Calculate time required to execute the program on Non-pipeline and Pipelineprocessor.ii) Show the pipeline processor with a diagram

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Solution

i) To calculate the time required to execute the program on a non-pipeline processor, we need to consider the time required for each instruction. Since there are 10 instructions and each instruction takes 4 pipeline stages, the total time required would be 10 instructions multiplied by 4 stages, which equals 40 stages. Since each stage takes 1 nanosecond, the total time required on a non-pipeline processor would be 40 nanoseconds.

To calculate the time required to execute the program on a pipeline processor, we need to consider the overlap of instructions in different stages. In a pipeline processor, multiple instructions can be in different stages simultaneously. Assuming there is no dependency between instructions, the time required would be equal to the number of stages, which is 4 stages, since each stage takes 1 nanosecond. Therefore, the total time required on a pipeline processor would be 4 nanoseconds.

ii) Here is a diagram representing the pipeline processor:

   Fetch    Decode    Execute    Write
  _______  _______  _______  _______
 |       | |       | |       | |       |
 |       | |       | |       | |       |
 |_______| |_______| |_______| |_______|

In this diagram, each stage is represented by a box, and the arrows indicate the flow of instructions through the pipeline stages. The Fetch stage is responsible for fetching the instruction, the Decode stage decodes the instruction, the Execute stage performs the necessary computations, and the Write stage writes the output.

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