hf-quant-and-layer-package-jobs

Development

Use when running quantization of a BF16/FP16 GGUF repo and Skippy layer-package creation as one local or Hugging Face Jobs workflow, publishing both artifacts to Hugging Face.

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HF Quant And Layer Package Jobs

Use this skill when a workflow should produce both a quantized GGUF repo and a Skippy layer package from an existing BF16/FP16 GGUF repo. The quantization phase must use skippy-quantize; do not use llama-quantize, llama-quantise, convert_hf_to_gguf.py, hf_to_gguf.py, or the misspelled old notes form hf_to_gguff.py.

Preconditions

Source BF16/FP16 GGUF repo is complete and has a known selector/prefix.
Target quant repo, quant selector, tensor-type file, output basename, expected split count, and memory budget are known.
Target layer-package repo is known or intentionally auto-derived by mesh-llm models package.
The layer package phase starts only after skippy-quantize verify-job succeeds for the quantized artifact.

Local Workflow

Quantize first:

target/release/skippy-quantize init-quant \
  --source /mnt/bf16 \
  --source-prefix BF16 \
  --target /mnt/quant \
  --target-prefix <quant-selector> \
  --output-basename <model>-<quant-selector> \
  --quant <quant-selector> \
  --tensor-type-file /mnt/recipe/tensor-types.txt \
  --window-size 1 \
  --manifest /tmp/skippy-quantize.json

target/release/skippy-quantize run-quant \
  --manifest /tmp/skippy-quantize.json \
  --backend llama-api \
  --max-memory 32G \
  --work-dir /tmp/skippy-quantize-work \
  --spool-dir /tmp/skippy-quantize-output \
  --record-dir /tmp/skippy-quantize-records \
  --json-event-file /tmp/skippy-quantize-status.json \
  --json-event-interval-seconds 120 \
  --json-event-window 8

target/release/skippy-quantize verify-job \
  --manifest /tmp/skippy-quantize.json \
  --llama-load

Before the real run, dry-run the same quant job and confirm it reports the expected source, target, tensor recipe, backend, memory budget, and next window:

target/release/skippy-quantize quant-job \
  --source /mnt/bf16 \
  --source-prefix BF16 \
  --target /mnt/quant \
  --target-prefix <quant-selector> \
  --output-basename <model>-<quant-selector> \
  --quant <quant-selector> \
  --tensor-type-file /mnt/recipe/tensor-types.txt \
  --window-size 1 \
  --manifest /tmp/skippy-quantize.json \
  --backend llama-api \
  --max-memory 32G \
  --dry-run

Publish the quant repo if the target is not already a mounted Hub repo:

hf repo create <org>/<quant-repo> --type model --private
hf upload <org>/<quant-repo> /mnt/quant . --repo-type model

Package the published quant:

mesh-llm models package <org>/<quant-repo>:<quant-selector> --dry-run
mesh-llm models package <org>/<quant-repo>:<quant-selector> --confirm --follow

Or package locally and publish:

target/debug/skippy-model-package write-package \
  <org>/<quant-repo>:<quant-selector> \
  --out-dir /tmp/<model>-layers

target/debug/skippy-model-package preflight \
  /tmp/<model>-layers \
  --verify-sha256

hf repo create <org>/<layer-package-repo> --type model --private
hf upload <org>/<layer-package-repo> /tmp/<model>-layers . --repo-type model

HF Jobs Workflow

When combining both phases in one HF Job, keep the quantized GGUF repo as the durable boundary:

Mount the BF16/FP16 source repo read-only.
Mount the target quant repo read/write.
Run skippy-quantize init-quant if the manifest is missing.
Run skippy-quantize run-quant until complete.
Run skippy-quantize verify-job; stop if it fails.
Submit or run the mesh-llm models package <quant-repo>:<selector> package phase.
Record both the quant repo commit and the layer-package repo commit.

Template:

hf jobs uv run \
  --namespace meshllm \
  --flavor cpu-upgrade \
  --timeout 4d \
  --secrets HF_TOKEN \
  --volume hf://models/<bf16-repo>:/mnt/bf16 \
  --volume hf://models/<quant-repo>:/mnt/quant \
  --env SKIPPY_QUANTIZE_OUTPUT=json \
  --env PYTHONUNBUFFERED=1 \
  --detach \
  /path/to/skippy_quant_then_package_job.py \
  -- \
  --source /mnt/bf16 \
  --source-prefix BF16 \
  --target /mnt/quant \
  --target-prefix <quant-selector> \
  --output-basename <model>-<quant-selector> \
  --quant <quant-selector> \
  --tensor-type-file /mnt/recipe/tensor-types.txt \
  --package-ref <org>/<quant-repo>:<quant-selector> \
  --max-memory 32G

Resume Rules

If quant shards already exist, skippy-quantize resumes at the first missing shard.
If the quant repo verifies successfully, skip quantization and run or inspect the package job.
Do not delete a verified quant repo to force a clean package run. Package jobs should consume the published quant artifact as the source of truth.

Validation

Before promoting the combined run, record:

source BF16/FP16 repo revision;
quant repo commit, quant selector, tensor recipe, split count, and verify output;
layer-package job id, target repo, target commit, and package certification;
total HF job cost and whether the combined workflow saved time or only saved operator steps.