ept.git/docs/hardware/HW_RESEARCH_FINDINGS.md, branch xiang Unnamed repository; edit this file 'description' to name the repository. HW dossier: OLMo2-standard block analog audit (net win; no new non-reciprocity; 3 new E-tier tolerance items) 2026-07-10T13:28:25+00:00 Yuren Hao yurenh2@illinois.edu 2026-07-10T13:28:25+00:00 7deae1e17bcb91e1eee8f1ea519c3bdb24fa8acd 






HW: cascade re-pricing under the reuse doctrine — depth becomes a memory line-item (time-mux one trainable block), nudged duty drops ~50x, leash instrumentation deleted, SRAM-CIM alone suffices for Demo-1 (device fab optional)
2026-07-10T04:21:16+00:00

Yuren Hao
yurenh2@illinois.edu

2026-07-10T04:21:16+00:00

7ff813044e0eb44284d060e20a148b08dd2040c1

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn





Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn







HW economics retraction: doctrine currency restored (COTS-stitch + FPGA + UIUC collab, $5-20k Demo-1 BOM); optimizer state digital-side by design => Adam ~free, Muon unblocked at demo scale, choice is algorithmic
2026-07-10T04:19:26+00:00

Yuren Hao
yurenh2@illinois.edu

2026-07-10T04:19:26+00:00

dd0a3ab0ef60687abd192637a450dcbdcf066895

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn





Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn







HW BoM correction: Lion/SGD ruled out for EP training (empirical, abl_lion2 blew @600 + prior tests) — factored-Adam is the MANDATORY analog baseline, not premium tier
2026-07-10T04:10:39+00:00

Yuren Hao
yurenh2@illinois.edu

2026-07-10T04:10:39+00:00

7ea3e8f1a688b8da9aed5623c8d12250594b2336

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn





Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn







HW: optimizer BoM audit per cascade block — Adam analog-compatible via factored-AGC (+2x memory, zero ADC), Muon priced out of analog (matrix-matrix NS + full-gradient ADC tax), Lion native baseline
2026-07-10T04:03:55+00:00

Yuren Hao
yurenh2@illinois.edu

2026-07-10T04:03:55+00:00

d227a9ef87ab75e839ebc773a680c52196006f7c

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn





Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn







HW dossier: analog softmax/attention (12 verified claims) — Elfadel-Wyatt 1993 reciprocal 'entropic resistor' softmax (EP-composable, PAR escape realized), charge-domain KV gain-cells (Leroux 2025), the analog-training gap confirmed unclaimed; +-1% mismatch->+-1% softmax linear tolerance coeff
2026-07-09T17:54:08+00:00

Yuren Hao
yurenh2@illinois.edu

2026-07-09T17:54:08+00:00

761ac0bae654333490df7de4c6dc50e24bd863f6

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn





Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn







Wall-3 theorem addendum: arXiv:2603.26969 (PAR) hardens the J^T obstruction; price list + Demo-M reframe
2026-07-07T18:52:22+00:00

Yuren Hao
yurenh2@illinois.edu

2026-07-07T18:52:22+00:00

096eab0b6c0d6db8a245ab242dbadeb13fb30f6e

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn





Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn







Initial commit: ept — backprop-free equilibrium transformer (EP)
2026-07-03T10:56:50+00:00

Yuren Hao
yurenh2@illinois.edu

2026-07-03T10:56:50+00:00

b83947778e2c776f757a07d4719b7ce961d7ed55

Code (ep_run/), organized docs (docs/{method,campaign,hardware,outreach,paper}),
analysis scripts (scripts/), ONBOARDING.md entry point. Large data/checkpoints
git-ignored (share separately).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn





Code (ep_run/), organized docs (docs/{method,campaign,hardware,outreach,paper}),
analysis scripts (scripts/), ONBOARDING.md entry point. Large data/checkpoints
git-ignored (share separately).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014FAPDWQ49M5Ye3NpTndTpn