Files
esh-pfi-infrastructure/docs
vh c507db9ac0 docs(gemma4-erp-tune): size the run against the checkpoint — QLoRA is structurally unavailable
The proposed shape was QLoRA r64. It cannot be run as specified. The
checkpoint stores each layer's 128 experts as two fused 3-D nn.Parameter
tensors (experts.gate_up_proj [128,1408,2816], experts.down_proj
[128,2816,704] — no .weight suffix, so they are parameters, not modules).
bitsandbytes 4-bit replacement walks nn.Linear only, so 22.84B params /
42.54 GiB — 88.5% of the model — is skipped and stays BF16. load_in_4bit
saves ~3.1 GiB of 48.07 and does not error while doing it.

Verdict: plain LoRA on BF16, ~57.6 GiB at micro-batch 1, +2.5 GiB per
additional 8192-token sequence.

Two sizing items were absent from the brief and both are load-bearing:

- vocab 262,144 x seq 8,192 = 2.147B logits, with final_logit_softcapping
  30.0 adding a saved pre-cap tensor. Naive HF cross-entropy peaks at
  ~28-30 GiB transient at batch 1, which puts the run at ~85.6 GiB on a
  95.6 GiB card — it starts, then OOMs on the first long sample. Fused or
  chunked linear CE is mandatory and must be smoke-proven before a window
  is booked, since Liger may not carry a Gemma-4 MoE patch.
- v_proj does not exist on layers 5/11/17/23/29 (attention_k_eq_v on the
  full-attention layers). A v_proj target silently produces no adapter
  there, and k_proj adapts K and V simultaneously. 45.96M trainable at
  r64 across q/k/v/o.

Placement, measured: GPU0 has 53.46 GiB free beside gen, ~4 GiB short, and
gen's footprint grows with uptime. Stopping mog-sec frees 74.29 GiB on
GPU1, which holds micro-batch 4 at 61.8 GiB with margin for Scriberr.
Recommend standing down sec (2 aliases, last request ~5h ago) rather than
gen (7 aliases, 765 busy-engine log lines in 24h).

Estimated 1.28e18 FLOPs for the epoch at ~3.67B active params; 4-10 hours
at 10-25% MFU. 7,104 packed sequences is only 444 optimizer steps at
effective batch 16, which makes the wall-clock-checkpointing amendment
concrete rather than hypothetical.

Package as a uv venv on /tank: root is 91% full (36 GB) with
/var/lib/docker on it.
2026-08-24 18:28:30 -07:00
..

docs/

Navigation map for the documentation tree. New session? Read orientation.md first — it's the narrative overview of the fleet, backup architecture, governing principles, and gotchas, and it points at everything else.

Tree

docs/
├── orientation.md            # start here — fleet overview + where-to-look guide
├── runbooks/                 # ops runbooks (recovery, deployment phases)
│   ├── disaster-recovery.md
│   ├── nh3-prune-ritual.md
│   └── pbs-deployment.md
└── pfi/                      # PFI-specific reference (services, models, VMs)
    ├── docker-stack.md
    ├── model-list.md
    ├── proxmox-vms.md
    ├── recommended-model-settings.md
    ├── vm-102-matrix-appservice.md
    └── vm-102-matrix-synapse.md

What goes where

  • runbooks/ — step-by-step ops procedures. Anything you'd reach for during an incident or while standing up new infrastructure. Examples: disaster recovery (blast-radius tiers + restoration steps), PBS deployment (9-phase rollout). New runbook → new file here.
  • pfi/ — PFI-specific reference material that's too narrow for the top-level CLAUDE.md but doesn't change incident response. AI model inventory, recommended inference settings, Matrix bridge config, Proxmox VM map. New stable reference → new file here.
  • Top-level (docs/orientation.md, docs/README.md) — narrative guides about the workspace itself, not about specific infra.

Cross-references

  • Fleet topology + servers table: top-level CLAUDE.md.
  • Open work + recent milestones: top-level STATUS.md.
  • Durable cross-session facts: ~/.claude/projects/-home-lkraven-development-eshpfi-management/memory/.

Conventions

  • Markdown, GitHub-flavored. CommonMark renders fine in most viewers.
  • File names are lowercase-kebab-case, descriptive. No dates in filenames — git history covers that.
  • One topic per file. If a file grows past ~500 lines, look for a natural split before adding more.
  • No checked-in binaries or checksums. Build/release artifacts belong in a build pipeline or tools/, not docs/.