GIGACHAD Phase-7 — consolidated report

Date: 2026-04-27 Scope: Physarium-7B top-brain surgery + organ farm + native tier manager, all wired into the single C++17 binary build/gigachad_native.

Physarium-v1 errata: all surgery numbers below are magnitude-flow,

not activation-aware. Read with reports/PHYSARIUM_RESULTS_RECONCILE.md

+ reports/PHYSARIUM_COVERAGE_AUDIT.md. Denominator: 22.22 % is over

target proj weights (100 % covered), 19.04 % over full 7B model.

Deliverables

| # | Deliverable | Status | Evidence | |---|----------------------------------------------------|--------|----------------------------------------------------| | 1 | Physarium-7B native surgery binary | ✅ | build/physarium7b_surgery (193 KB) | | 2 | Real 7B surgery run on Qwen2.5-7B-Instruct donor | ✅ | reports/PHYSARIUM7B_SURGERY_REPORT.md | | 3 | Pruned model on disk (BF16, 4 shards, valid index) | ✅ | Physarium-7B-Native/ (15 GB, 339 tensors) | | 4 | Organ farm spec — 8 phys05_* + physarium_7b | ✅ | organs/organ_farm.json | | 5 | 9 prompt templates | ✅ | organs/prompts/*.txt | | 6 | Native tier manager (VRAM / RAM / SSD policy) | ✅ | src/runtime/tier_manager.cpp, include/tier_manager.hpp | | 7 | Tier accounting integrated into run_task | ✅ | src/main.cpp (food/poison on each call) | | 8 | Persisted tier state | ✅ | physarium/tier_state.json |

Surgery — short version

| Field | Value | |--------------------------|----------------------------------------------------------------------| | Donor | /home/pc/qwen7b/instruct/ (Qwen2.5-7B-Instruct, BF16, 15 GB) | | Output | /home/pc/gigachad_native/Physarium-7B-Native/ (BF16, 15 GB) | | Killed weights | 1,450,103,613 / 6,525,288,448 = 22.22 % of target proj weights | | Per-tensor sparsity | min 16.32 %, mean 22.33 %, max 45.92 % | | Tensors | 339 total, 0 failed, dtype + shape preserved | | Wall-clock | 2775.6 s (46.3 min) | | Index validity | model.safetensors.index.json parses; all 4 shards open via safetensors |

Full per-projection table and honest caveats: PHYSARIUM7B_SURGERY_REPORT.md.

Organ farm — short version

organs/organ_farm.json declares 8 small organs and 1 top brain:

| Organ | Role | Tier default | Verifier | |-----------------------------|-------------------------------|--------------|-----------------| | phys05_json_repair | JSON syntax repair | RAM | json_strict | | phys05_code_skeleton | Code skeleton emit | RAM | code_compile | | phys05_test_writer | Unit test draft | RAM | test_runs | | phys05_claim_extractor | Source-bound claim extraction | RAM | source_present | | phys05_triz_contradiction | TRIZ-style contradiction | RAM | hard_verifier | | phys05_renderer | Final answer render | SSD | hard_verifier | | phys05_cache_matcher | Hologram cache match | SSD | source_present | | phys05_critic_lite | 4-axis 0–3 critic | SSD | json_strict | | physarium_7b (top) | Top brain | VRAM | hard_verifier |

Each organ has food_signals / poison_signals declared in spec; the binary applies them in run_task and persists to tier_state.json.

Tier manager — verified behavior

After clearing state and running one --task json_repair call:

{"name":"phys05_json_repair","tier":"RAM","calls":1,"food":2.5,"poison":0.5,"net":2,"avg_lat_ms":0.000508}
{"name":"physarium_7b","tier":"VRAM","calls":0,"food":0,"poison":0,"net":0,"avg_lat_ms":0}

State persists across invocations and is correctly reloaded on next start.

Bug fixed in this phase: the persisted-state loader previously matched the outer "organs": { ... } JSON key as if it were an organ name, producing a phantom "organs" row. Patched in src/runtime/tier_manager.cpp: only names physarium_7b or starting with phys05_ are accepted from the persisted file. Verified by clearing physarium/tier_state.json, running a task, re-reading via --tier-status — no phantom row.

Build / selftest

$ make all
... (warnings only: misleading-indent + a /* in-comment in hologram_store) ...
$ ./build/gigachad_native --selftest
[selftest] field: 8 routes loaded; best=ariz net=278.50
[selftest] PASS (0 failures)

Build artifacts:

• build/gigachad_native (445 KB) — runtime + dispatcher + verifier + DAG +

memory spine + tier manager

• build/gigachad_physarium (23 KB) — physarium engine CLI
• build/physarium7b_surgery (193 KB) — surgery binary

What's NOT in scope of Phase 7 (and not done)

• ❌ No native 7B inference backend. Physarium-7B-Native is on disk

and structurally valid; running a forward pass through it from C++/CUDA needs a full transformer runtime that is not in this tree.

• ❌ No quality eval of the pruned 7B. Sparsity numbers say nothing about

output quality. The surgery report flags this caveat explicitly.

• ❌ VRAM fit. With tier_default: VRAM the 15 GB BF16 model does not

fit on the 8 GB RTX 3060 Ti. Quantization or partial-offload tier policy refinement is a Phase-8+ problem.

• ❌ Live use of organs. The run_task path calls the organ stub

({"_stub":"<organ> organ pending Phase-6E"}); real LLM dispatch through the farm to a backend is not implemented in C++ yet.

Honest one-liner

Phase-7 produces a structurally valid pruned 7B model, a declared farm of 8 organs + 1 top brain, and a working native tier manager that records food/ poison/latency per call and persists state. It does not yet run real inference through any of those organs — that gap is documented, not papered over.