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gt2n: port snitch_cluster - #240

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dhgaddy:snitch-cluster-gt2n
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gt2n: port snitch_cluster#240
dhgaddy wants to merge 1 commit into
VLSIDA:mainfrom
dhgaddy:snitch-cluster-gt2n

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@dhgaddy

@dhgaddy dhgaddy commented Sep 7, 2026

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Summary

  • Adds snitch_cluster to the gt2n platform (already on asap7/nangate45).
  • Reaches _final. Setup clean (WNS +9.02ps). Hold has 9 residual
    violations (worst -8.56ps, TNS -25.89ps) -- see DECISIONS.md.

QoR summary

Design Fmax Die area (µm²)
snitch_cluster 166.7 MHz 308882

Reaches _final with CORE_UTILIZATION=55 (PLACE_DENSITY 0.67,
MACRO_PLACE_HALO 8 8), MAX_ROUTING_LAYER=M11, MIN_CLK_ROUTING_LAYER=M4,
clock period 6000ps (Fmax 166.7MHz). Die area 308882 um^2 (core
306588 um^2), ~12.0M instances.

Setup: WNS +9.02ps, 0 violations.
Hold: WS -8.56ps, TNS -25.89ps, 9 violations.
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