WFGY/ProblemMap/GlobalFixMap/LocalDeploy_Inference/awq.md

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AWQ (Activation-aware Weight Quantization): Guardrails and Fix Patterns

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AWQ/AutoAWQ applies activation-aware quantization to compress weights into 4/8-bit, aiming for higher throughput on local inference with minimal accuracy loss.
This page maps typical AWQ failure modes to structural fixes in the WFGY Problem Map and defines measurable acceptance gates.


Open these first


Core acceptance

  • ΔS(question, retrieved) ≤ 0.45
  • Coverage ≥ 0.70 of the target section
  • λ remains convergent across 3 paraphrases and 2 seeds
  • Compared to FP16 baseline, ΔS drift ≤ 0.10, and entropy curve remains stable on long sequences

Typical AWQ breakpoints → exact fix

Symptom Likely cause Open this
PPL rises significantly after quantization, answers drift Calibration dataset mismatch, wrong q_group_size Retrieval Playbook, Chunking Checklist
Snippets retrieved correctly but synthesis drifts Logit jitter from quantization, unstable header ordering Retrieval Traceability, Logic Collapse
GPU still OOM or no throughput gain Layer fusion disabled, device map misaligned Bootstrap Ordering
Long-chain reasoning collapses earlier Faster entropy accumulation, no rerank or bridge Entropy Collapse, Rerankers
JSON tool outputs unstable Small errors amplified, schema too loose Data Contracts

Fix in 60 seconds

  1. Measure ΔS
    Run 10 QA pairs with FP16 and AWQ. Compare ΔS(question, retrieved) and ΔS(retrieved, anchor).
    If ΔS drift > 0.10, recalibrate.

  2. Probe λ_observe
    Vary k = 5/10/20, shuffle headers.
    If λ flips, lock header ordering and apply BBAM variance clamp.

  3. Apply the module

    • Retrieval drift → BBMC + Retrieval Traceability
    • Reasoning collapse → BBCR + BBAM
    • Long-chain dead ends → BBPF alternative path + reranker
  4. Verify
    Three paraphrases × two seeds. Coverage ≥ 0.70, λ convergent.


Deep diagnostics

  • Calibration set sanity
    Use a calibration set that matches production distribution. If only short or domain-limited data is used, quantized model will misbehave.

  • Anchor triangulation
    Compare ΔS to anchor section and adjacent distractor. If gap ≤ 0.05, semantic boundaries are flattened → redo calibration or adjust w_bit, q_group_size.

  • Entropy vs length
    Plot entropy per step on long sequences. If AWQ rises earlier than FP16, enable deterministic sampling, raise temperature floor, and add reranker.


Copy-paste recipes

A) Load a pre-quantized AutoAWQ model

from autoawq import AutoAWQForCausalLM, AutoTokenizer

model_id = "your-awq-model"
tokenizer = AutoTokenizer.from_pretrained(model_id, use_fast=True)
model = AutoAWQForCausalLM.from_pretrained(
    model_id,
    fuse_layers=True,
    safetensors=True,
    device_map="auto"
)
# Run ΔS/λ regression tests vs FP16 baseline

B) Online quantization with custom config

from autoawq import AutoAWQForCausalLM, AutoTokenizer

base_id = "your-fp16-model"
tokenizer = AutoTokenizer.from_pretrained(base_id, use_fast=True)
model = AutoAWQForCausalLM.from_pretrained(base_id, device_map="auto")

quant_config = {
    "zero_point": True,
    "q_group_size": 128,
    "w_bit": 4,
    "version": "GEMM"
}
model.quantize(tokenizer, quant_config)
# Export and cache, then immediately run ΔS regression

Ops checklist

  • Verify driver + compute capability before loading kernels
  • Always test single-GPU ΔS/λ vs FP16 before scaling parallelism
  • Track VRAM + throughput together with ΔS, λ, coverage metrics

🔗 Quick-Start Downloads (60 sec)

Tool Link 3-Step Setup
WFGY 1.0 PDF Engine Paper 1 Download · 2 Upload to your LLM · 3 Ask “Answer using WFGY + <your question>”
TXT OS (plain-text OS) TXTOS.txt 1 Download · 2 Paste into any LLM chat · 3 Type “hello world” — OS boots instantly

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