In the examination of how data dependences affect execution in the basic 5-stage pipeline, this exercise refers to the following sequence of instructions: or r1,r2,r3 or r2,r1,r4 or r1,r1,r2 Also, assume the following cycle times for each of the options related to forwarding:     Assume there is no forwarding in this pipelined processor. Indicate hazards and add nop instructions to eliminate them. Assume there is full forwarding. Indicate hazards and add NOP instructions to eliminate them. What is the total execution time of this instruction sequence without forwarding and with full forwarding?

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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In the examination of how data dependences affect execution in the basic 5-stage pipeline, this exercise refers to the following sequence of instructions:

or r1,r2,r3

or r2,r1,r4

or r1,r1,r2

Also, assume the following cycle times for each of the options related to forwarding:

 

 

  • Assume there is no forwarding in this pipelined processor. Indicate hazards and add nop instructions to eliminate them.
  • Assume there is full forwarding. Indicate hazards and add NOP instructions to eliminate them.
  • What is the total execution time of this instruction sequence without forwarding and with full forwarding?

 

Without Forwarding
250ps
With Full Forwarding
300ps
Transcribed Image Text:Without Forwarding 250ps With Full Forwarding 300ps
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