Question

Technique to resolve data dependency in pipelined processor

Answer 1

Answer:

Pipelined issue of Data hazards can be solved through register renaming that is used to remove false data dependencies b/w instructions in running state. Register operands of instructions are renamed. Register renaming can reduce the impact of WAR and WAW dependencies. WAR and WAW both are data hazards.

Explanation:

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Answer 2

The technique used to resolve data dependency in a pipelined processor is operand forwarding.

• In pipeline CPUs, forwarding represents an improvement to limit output shortfalls resulting from the pipeline stalls.  
• When the current operation has to wait for the direct results of an more initial operation which has not yet ended, a data hazard can typically lead to a pipeline stall.
• In forwarding, the interface registers existing in distinct phases are properly employed. This is done to retain transitional output so that dependent specifications can directly access new value from the interface register.