Question

What are data hazards ? Enumerate different classes of data hazards and how they can be tackled in a pipelined processor architecture design. ​[5 Marks]

Answer 1

Answer:

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Explanation:

Data hazards occur when the pipeline changes the order of read/write accesses to operands so that the order differs from the order seen by sequentially executing instructions on the unpipelined machine.

There are three classes of hazards:

Structural Hazards. They arise from resource conflicts when the hardware cannot support all possible combinations of instructions in simultaneous overlapped execution.

Data Hazards. ...

Control Hazards.