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Physical Design and Open-EDA Research Packet (2026-05-19)

packages/chip/research/pd_eda_2026/00_index.md

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Physical Design and Open-EDA Research Packet (2026-05-19)

Scope: cutting-edge open-source physical design, EDA, and AI-driven layout tooling relevant to the Eliza E1 chip. This packet extends the existing research/alpha_chip_macro_placement/ AlphaChip work; it does not duplicate its detail. Where the AlphaChip packet already covers a topic, this packet cites it and adds 2025-2026 deltas.

The packet is evidence-curated reading material plus an implementation plan. It does not claim signoff and does not modify the live PD flow. All recommendations are ranked and traced to existing repo work orders.

Files

  • 01_sources/source_inventory.yaml - structured registry of every external source (>= 45 entries), with URL, kind, last-checked date, relevance, and evidence link where applicable.
  • 02_analysis/open_eda_flow_state_of_the_art.md - OpenLane 2 / OpenROAD / Yosys / KLayout 2025-2026 state, deltas against the version family pinned by the current chip-package OpenLane Sky130 flow.
  • 02_analysis/ai_driven_pd.md - AlphaChip 2024 Nature update + open-source circuit_training release, CircuitNet 2.0, MaskPlace, ChiPFormer, WirePlanRL, AutoDMP, DREAMPlace 4, ML-CTS, ML congestion/DRC predictors. Designed as an extension to research/alpha_chip_macro_placement/.
  • 02_analysis/pdk_landscape.md - Sky130 / Sky90 / GF180 MCU / IHP130 SG13G2 / ASAP7 / NanGate45 viability for E1 PD smoke and future signoff.
  • 02_analysis/pdn_thermal_signoff.md - open-source IR-drop / PDN / EM / thermal / DRC / antenna tooling and the gaps that matter for E1.
  • 03_implementation/pd_path_for_e1.md - ranked recommendations tied to:
    • docs/architecture-optimization/physical-power-thermal.md
    • the OpenLane Sky130 utilization issue called out in docs/three-week-prototype-workstreams.md (771.788% utilization incident on the first attempted full run before the Volare PDK revision landed)
    • the 14A signoff gap declared in docs/spec-db/process-14a-effects.yaml.

Existing artifacts this packet does not duplicate

  • AlphaChip path:
    • research/alpha_chip_macro_placement/06_e1_notes/openlane_full_release_2026-05-19.md
    • research/alpha_chip_macro_placement/06_e1_notes/softmacro_benchmark_2026-05-19.md
  • AlphaChip source inventory:
    • research/alpha_chip_macro_placement/01_sources/ai_eda_source_inventory.yaml
  • AlphaChip SOTA review:
    • research/alpha_chip_macro_placement/01_sources/ai_eda_sota_review.md

These remain the canonical AlphaChip references. This packet's ai_driven_pd.md adds 2025-2026 deltas only.

Cross-references in the repo

  • pd/openlane/config.sky130.json - live OpenLane Sky130 config.
  • pd/signoff/run-manifest.schema.json - signoff manifest schema.
  • docs/pd/ - PD evidence directory (antenna metadata, padframe, signoff template).
  • scripts/check_pd_signoff.py - signoff gate.
  • docs/spec-db/process-14a-effects.yaml - process effects contract.
  • docs/spec-db/npu-2028-target.yaml - 2028 NPU target.

Source policy

All entries in source_inventory.yaml are primary or canonical secondary sources: GitHub release pages, arXiv papers, ICCAD/DAC/ASP-DAC/ISPD papers, OpenROAD documentation, Efabless docs, foundry public guides (Sky130 / GF180 / IHP130). No vendor marketing copy treated as evidence. URLs are recorded with last_checked: 2026-05-19 so future runs can detect drift.