Pipeline (cont)

• Execute - maximum of 10 phases

  • 90% of the instructions only use first 5
  • double precision FP add/mults use last 5

• Result Latency: number of execute phases used by an operation (most only use 1)

• Delay slots: Result Latency minus 1. If zero, then result is available for next execute packet.

  • If non-zero, then independent operations must scheduled in the delay slots

• Functional Unit Latency (repetition rate of Functional Unit)

  • Either 1, 2 or 4. (1 for common operations and LD/Stores)

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