Penalties (Predict/Actual)BPT improves only the T/T caseIn what’s below the number of stall cycles (bubbles) is for a simple pipe. It would be larger for deeper pipes.

• Case 1:

  • NT/NT 0 penalty
  • T/T need to compute address: 0 or 1 bubble

• Case 2

  • NT/T 2 or 3 bubbles
  • T/NT 2 or 3 bubbles

• Case 3:

  • NT/NT 0 penalty

• Case 4:

  • NT/T 2 or 3 bubbles

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