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Structural Hazards

Structural Hazard: a possible interruption to a computation or flow of data owing to a physical resource that has insufficient capacity. Consequently, operations that could potentially be done in parallel have to be done serially.


Additional clock cycles and holding registers are typically needed.

A Non-fully pipelined component: is unable to start a new operation on every clock cycle.

Such a component:

Example: fixed point multipliers and dividers (see additional material).

Example: all floating point operations tend to be implemented with multi-cycle units.

30: (C) 2008-11, DJ Greaves, University of Cambridge, Computer Laboratory.