Leaderboard submission - Ashvin Verma#59

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ashvin-verma wants to merge 45 commits intopartcleda:mainfrom

ashvin-verma:main

Commits on Mar 21, 2026

Add project setup: PLAN.md, uv config, and ashvin/ working directory

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Commits on Mar 22, 2026

Implement placement solver: 0.0000 overlap on all tests 1-10

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Achieve 0.0000 overlap on all 12 tests including 100K cells

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Add WL optimization: gradient polish + re-legalize cycles

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Add cell swap WL optimization + gradient polish pipeline

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Add optuna tuning + cell swap optimization

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Add min-disturbance legalization (kept as option), edge visualization

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Add multi-start solver, spectral init, fast cell swaps

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Update best config from optuna v3: WL 0.4091 on all tests

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Add barycentric refinement, scatter solver, streamline pipeline

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Targeted scatter: 12% WL improvement (0.45 → 0.40)

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Multi-scatter WL optimization: 0.3842 avg WL, nuclear loss experiments

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Region-aware pre-positioning tested (reverted), 5-scatter iterations

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Multi-pass compiler-style pipeline: legalize→scatter→GD→re-legalize

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Momentum barycentric, WL-aware legalization, spatial hash overlap check

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WIP: Net-aware legalizer (candidate-slot based)

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Hybrid legalization: row-pack then net-aware refinement. WL 0.3613

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Detailed placement engine: pair swaps + cell reinsertion

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New best: 0.3540 avg WL, rank 9. Detailed placement working.

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Commits on Mar 23, 2026

Commits on Mar 24, 2026

Commits on Mar 25, 2026

Hybrid GD+constructive spreading: avg 0.402, T2 best ever 0.315

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Commits on Mar 26, 2026

Commits on Apr 22, 2026

Final leaderboard submission: projected GD shelf legalizer
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