autopack

autopack makes your Hugging Face models easy to run, share, and ship. It quantizes once and exports to multiple runtimes, with sensible defaults and an automatic flow that produces a readable summary. It supports HF, ONNX, and GGUF (llama.cpp) formats and can publish to the Hugging Face Hub in one shot.

About · Requirements · Setup · Building Instructions · Running · Detailed Usage · Q&A

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About The Project

What is autopack?

autopack is a CLI that helps you quantize and package Hugging Face models into multiple useful formats in a single pass, with an option to publish artifacts to the Hub.

You have a 120B LLM and want to optimize it so that people (not corporations with clusters of B200s) can use it on their 8GB 2060? All you need to do is run:

autopack sentence-transformers/all-MiniLM-L6-v2

Why use it?

• Fast: generate multiple variants in one command.
• Practical: built on Transformers, bitsandbytes, ONNX, and llama.cpp.
• Portable: CPU- and GPU-friendly artifacts, good defaults.

Requirements

Core

• Python 3.9+
• PyTorch, Transformers, Hugging Face Hub
• Optional: bitsandbytes (4/8-bit), optimum[onnxruntime] (ONNX), llama.cpp (GGUF tools)

Notes

• GGUF export requires a built llama.cpp and llama-quantize in PATH.
• Set HUGGINGFACE_HUB_TOKEN to publish, or pass --token.

Setup

Install

pip install autopack-grn

Optional extras

# ONNX export support
pip install 'autopack-grn[onnx]'

# GGUF export helpers (converter deps)
pip install 'autopack-grn[gguf]'

# llama.cpp runtime bindings (llama-cpp-python)
pip install 'autopack-grn[llama]'

# Everything for llama.cpp functionality (GGUF export + runtime)
pip install 'autopack-grn[gguf,llama]'

Note: for GGUF and llama.cpp functionality you also need the llama.cpp tools (llama-quantize, llama-cli) available on your PATH. You can build the vendored copy and export PATH as shown in Vendored llama.cpp quick build.

From source (dev)

pip install -e .

# Optional extras while developing
pip install -e '.[onnx]'
pip install -e '.[gguf]'
pip install -e '.[llama]'
pip install -e '.[gguf,llama]'

Building Instructions

python -m build

Running the Application

Quickstart

autopack meta-llama/Llama-3-8B --output-format hf

Add ONNX and GGUF:

autopack meta-llama/Llama-3-8B --output-format hf onnx gguf --summary-json --skip-existing

GGUF only (with default presets Q4_K_M, Q5_K_M, Q8_0):

autopack meta-llama/Llama-3-8B --output-format gguf --skip-existing

Publish to Hub:

autopack publish out/llama3-4bit your-username/llama3-4bit --private \
  --commit-message "Add 4-bit quantized weights"

Detailed Usage

Commands Overview

scan

Inspect a model id or local folder and print metadata (config, sizes, quantization hints) with suggestions for next steps. Now includes human-readable sizes, file summary (config/tokenizer presence), weight file counts, and top-5 largest files.

autopack scan <model_id_or_path> \
  [--revision <rev>] [--trust-remote-code] [--local-files-only] \
  [--resolve-cache] [--json] [--show-files] [--limit-files 50]

Examples:

# Remote model (lightweight, no weight download). Prints human-readable summary
autopack scan meta-llama/Llama-3-8B

# JSON output suitable for scripting
autopack scan meta-llama/Llama-3-8B --json

# Resolve a local snapshot to list files and sizes
autopack scan meta-llama/Llama-3-8B --resolve-cache --show-files --limit-files 20

# Scan a local folder
autopack scan ./tiny-gpt2

auto

Run common HF quantization variants and optional ONNX/GGUF exports in one go, with a summary table and generated README in the output folder.

autopack [auto] <model_id_or_path> [-o <out_dir>] \
  --output-format hf [onnx] [gguf] \
  [--eval-dataset <dataset>[::<config>]] \
  [--revision <rev>] [--trust-remote-code] [--device auto|cpu|cuda] \
  [--no-bench] [--bench-prompt "..."] [--bench-max-new-tokens 16] \
  [--bench-warmup 0] [--bench-runs 1] \
  [--hf-variant bnb-4bit|bnb-8bit|int8-dynamic|bf16] \
  [--hf-variants bnb-4bit bnb-8bit int8-dynamic bf16]

Key points:

• Default HF variants: bnb-4bit, bnb-8bit, int8-dynamic, bf16
• Add ONNX and/or GGUF via --output-format
• If -o/--output-dir is omitted, the output folder defaults to the last path segment of the model id/path (e.g., user/model -> model).
• Benchmarking is enabled by default in auto; use --no-bench to disable.
• If --eval-dataset is provided, perplexity is computed for each HF variant
• If benchmarking is enabled, autopack measures actual Tokens/s per backend and replaces heuristic speedups with real Tokens/s and speedup vs bf16 in the summary and the generated README.
• For very large models, use --hf-variant bf16 (single) or --hf-variants bf16 int8-dynamic (subset) to reduce loads.

quantize

Produce specific formats with a chosen quantization strategy.

autopack quantize <model_id_or_path> [-o <out_dir>] \
  --output-format hf [onnx] [gguf] \
  [--quantization bnb-4bit|bnb-8bit|int8-dynamic|none] \
  [--dtype auto|float16|bfloat16|float32] \
  [--device-map auto|cpu] [--prune <0..0.95>] \
  [--revision <rev>] [--trust-remote-code]

publish

Upload an exported model folder to the Hugging Face Hub.

autopack publish <folder> <user_or_org/repo> \
  [--private] [--token $HUGGINGFACE_HUB_TOKEN] \
  [--branch <rev>] [--commit-message "..."] [--no-create]

bench

Run standalone benchmarks on existing models/artifacts.

autopack bench <target> \
  --backend hf [onnx] [gguf] \
  [--prompt "Hello"] [--max-new-tokens 64] \
  [--device auto] [--num-warmup 1] [--num-runs 3] \
  [--trust-remote-code] [--llama-cli /path/to/llama-cli]

Notes:

• For HF, target can be a Hub id or local folder. For ONNX, pass the exported folder. For GGUF, pass a .gguf file or a folder containing one.
• ONNX benchmarking requires optimum[onnxruntime]. GGUF benchmarking requires llama-cli.

Common Options

• --trust-remote-code: enable loading custom modeling code from Hub repos
• --revision: branch/tag/commit to load
• --device-map: set to cpu to force CPU; defaults to auto
• --dtype: compute dtype for non-INT8 layers (applies to HF exports)
• --prune: global magnitude pruning ratio across Linear layers (0..0.95)

Output Formats

• hf: Transformers checkpoint with tokenizer and config
• onnx: ONNX export using optimum[onnxruntime] for CausalLM
• gguf: llama.cpp GGUF via convert_hf_to_gguf.py and llama-quantize

GGUF Details

• Converter resolution order:
  1. --gguf-converter if provided
  2. $LLAMA_CPP_CONVERT env var
  3. Vendored script: third_party/llama.cpp/convert_hf_to_gguf.py
  4. ~/llama.cpp/convert_hf_to_gguf.py or ~/src/llama.cpp/convert_hf_to_gguf.py
• Quant presets: uppercase (e.g., Q4_K_M). If omitted, autopack generates Q4_K_M, Q5_K_M, Q8_0 by default.
• Isolation: by default, conversion runs in an isolated .venv inside the output dir. Disable with --gguf-no-isolation.
• Architecture checks: pass --gguf-force to bypass the basic architecture guard.
• Ensure llama-quantize is in PATH (typically in third_party/llama.cpp/build/bin).

ONNX Details

• Requires: pip install 'optimum[onnxruntime]'
• Uses ORTModelForCausalLM; non-CausalLM models may not be supported in this version.

Perplexity Evaluation

• --eval-dataset accepts dataset or dataset:config (e.g., wikitext-2-raw-v1)
• --eval-text-key controls which dataset column is used for text (default: text)
• Device selection is automatic (cuda if available, else cpu)
• Only CausalLM architectures are supported for perplexity computation
• Uses a bounded sample count and expects a text field in the dataset

More Examples

Single-variant run (bf16 only):

autopack meta-llama/Llama-3-8B --output-format hf --hf-variant bf16

Subset of variants:

autopack meta-llama/Llama-3-8B --output-format hf --hf-variants bf16 int8-dynamic

CPU-friendly int8 dynamic with pruning:

autopack quantize meta-llama/Llama-3-8B \
  --output-format hf --quantization int8-dynamic --prune 0.2 --device-map cpu

BF16 only (no quantization):

autopack quantize meta-llama/Llama-3-8B \
  --output-format hf --quantization none --dtype bfloat16

Override GGUF presets:

autopack meta-llama/Llama-3-8B \
  --output-format gguf --gguf-quant Q5_K_M Q8_0

Auto with benchmarking (reports Tokens/s and real speedup vs bf16):

autopack sshleifer/tiny-gpt2 --output-format hf

Hello World (Transformers on CPU):

pip install autopack-grn
autopack sshleifer/tiny-gpt2 --output-format hf
python - <<'PY'
from transformers import AutoTokenizer, AutoModelForCausalLM
tok = AutoTokenizer.from_pretrained('tiny-gpt2/bf16')
m   = AutoModelForCausalLM.from_pretrained('tiny-gpt2/bf16', device_map='cpu')
ids = tok('Hello world', return_tensors='pt').input_ids
out = m.generate(ids, max_new_tokens=8)
print(tok.decode(out[0]))
PY

Hello World (GGUF with llama.cpp):

autopack sshleifer/tiny-gpt2 --output-format gguf
./third_party/llama.cpp/build/bin/llama-cli -m tiny-gpt2/gguf/model-Q4_K_M.gguf -p "Hello world" -n 16

Vendored llama.cpp quick build

cd third_party/llama.cpp
cmake -S . -B build -DGGML_NATIVE=ON
cmake --build build -j

Troubleshooting

• llama-quantize not found: build llama.cpp and ensure build/bin is in PATH.
• BitsAndBytes on Windows: currently not installed by default; prefer CPU/int8-dynamic flows.
• Custom code prompt: pass --trust-remote-code to avoid the interactive confirmation.

Environment Variables

• HUGGINGFACE_HUB_TOKEN: token to publish to the Hub
• LLAMA_CPP_CONVERT: path to convert_hf_to_gguf.py
• PATH: should include the directory with llama-quantize

Q&A

FAQs

What does “auto” do?

Generates HF variants (4-bit, 8-bit, int8-dynamic, bf16) and prints a summary; GGUF/ONNX are opt-in.

What if I omit --gguf-quant?

autopack will create multiple useful presets by default (Q4_K_M, Q5_K_M, Q8_0).

Large models

For very large models (tens of GBs), prefer a minimal, resumable flow:

• Single variant: use --hf-variant bf16 (or another) to avoid multiple loads
• Avoid extra runs: add --no-bench
• Resume-friendly: keep --skip-existing
• CPU-safe: add --device cpu to skip GPU-only paths

Examples:

# BF16 only, no benchmarking, resume if partial outputs exist
autopack user/model-giant --output-format hf \
  --hf-variant bf16 --no-bench --skip-existing

# CPU-focused subset
autopack user/model-giant --output-format hf \
  --hf-variants bf16 int8-dynamic --device cpu --no-bench --skip-existing

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License: Apache-2.0