RISC-V Design · All levels

Five-Stage Pipeline Partitioning and Timing Contracts: Design Space

Design Space for Five-Stage Pipeline Partitioning and Timing Contracts.

Design space

Design Space for Five-Stage Pipeline Partitioning and Timing Contracts is anchored on Post-layout Fmax versus stage slack spread, plus bubble rate introduced by stage-boundary timing fixes.. Convert observations into mechanism-backed decisions with explicit ownership.

  • Trade latency and throughput against power and area.

  • Prefer architecture options with clear software contract impact.

  • Quantify extension-profile cost before enabling by default.

  • Keep bring-up and validation ownership explicit.

Trend lens

diagram
BEFORE / AFTER TREND - Five-Stage Pipeline Partitioning and Timing Contracts

Post-layout Fmax versus stage slack spread, plus bubble rate introduced by stage-boundary timing fixes.
  ^
  |                           o target band
  |                    o after fix + reruns
  |             o
  |      o baseline (failing)
  +--------------------------------------------------> iteration
       capture issue      isolate mechanism      close + monitor

Use this view to confirm the gain is causal and stable across seeds.