j6-plugin-precision-tuning

j6-plugin-precision-tuning is a skill for Claude Code, Codex from HorizonRobotics/OE-Skills. It costs 49 tokens per session (5,052 once invoked), scanned A, original, Apache-2.0.

A guide for fixing accuracy problems in PyTorch models on Horizon J6 hardware before deployment. It focuses on calibration and quantization-aware training, where model numbers are adapted for faster, lower-precision processing.

In plain words
What is it for?
Use it to investigate calibration or QAT problems, compare bad cases layer by layer, analyze sensitivity, and choose between int8, int16, and fp16 settings.
Why use it?
It helps identify where accuracy starts to drop and prevents comparing the wrong model versions or changing precision settings without enough evidence.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to investigate calibration or QAT problems, compare bad cases layer by layer, analyze sensitivity, and choose between int8, int16, and fp16 settings.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/horizonrobotics/oe-skills/j6-plugin-precision-tuning
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add HorizonRobotics/OE-Skills --skill j6-plugin-precision-tuning
Clone the repo
git clone --depth 1 https://github.com/HorizonRobotics/OE-Skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

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README.md
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<a href="https://agentmods.dev/skills/horizonrobotics/oe-skills/j6-plugin-precision-tuning"><img src="https://agentmods.dev/badge/skills/horizonrobotics/oe-skills/j6-plugin-precision-tuning.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,052 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.05052
Opus 5.5 $0.00020 $0.02021
Sonnet 5.5 $0.00010 $0.01010
Haiku 4.5 $0.00005 $0.00505

Measured 2mo ago against content hash 00f333f20003, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

j6-plugin-precision-tuning scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

horizon/skills/plugin/j6-plugin-precision-tuning/SKILL.md · 464 lines

How it starts

The opening of the file, as written. The whole thing — 464 lines — stays where its author put it; the contents beside it link to each section on GitHub.

J6 Horizon Plugin PyTorch 精度调优

核心原则

解决 PyTorch 侧 的训练/校准精度问题。

按下面顺序收敛问题:

  1. 先看 Calibration / QAT 哪一段开始掉点。
  2. 用 QuantAnalysis 围绕 badcase 做逐层比较和敏感度分析。
  3. 只有基础问题基本排干净后,再做 int8 / int16 / fp16 混合精度取舍。

不要直接把 float 模型和 QAT 模型拿来做常规逐层比较。 常规精度 debug 优先比较 float vs calibration(fake_quant);QAT 训练异常时,更多是用 float finetune、关 fake quant、lr=0 之类手段排查训练 pipeline。

执行前门禁

在给出调优建议、修改 qconfig、或要求用户重跑大量实验前,先确认下面信息够不够:

必需信息 为什么需要
当前异常阶段:Calibration / QAT 决定先走哪条排查路径
至少一个稳定评测指标 防止只盯单帧数值、忽略真实精度
当前模型类型:float / calibration / qat 防止用错工具和比较对象
平台 / march:J6E/M 还是 J6P 决定 int16 / fp16 的主路线
用于查 badcase 的 dataloader QuantAnalysis 后续步骤都依赖它
现有产物:敏感度表、逐层对比结果等(若已有 model_check_result.txt 也可作为背景参考) 避免重复劳动

推荐补充信息

  • 校准数据量、batch size、observer 类型。
  • QAT 学习率、weight decay、是否 freeze BN。
  • 是否已经试过关闭 fake quant、lr=0、float finetune。

如果缺少这些信息且会影响判断,先要求补充;不要在没有 badcase 或没有阶段归属的情况下直接开混合精度“盲调”。

先判断问题更像哪一类

现象 更像的问题 优先动作
Calibration 精度崩溃 scale、fixed scale、共享模块、量化不友好模块、pipeline 问题 结合已有检查结果,再做 float vs calibration badcase 分析
Calibration 还行,QAT 崩溃或 loss 异常 训练 pipeline、训练参数、fake quant 使用方式问题 先排查 float finetune / _FLOAT / lr=0
全 int16 都不达标 不是简单 int8 分辨率不够,可能有 pipeline 或模块本身不友好 先解决全 int16 基线,再谈更复杂混合精度
全 int16 达标,全 int8 不达标 正常进入混合精度调优 用敏感度结果挑高精度算子
需要决定哪些算子升到 int16 混合精度配置问题 用 sensitivity() + qconfig 模板

正确 API 用法

1) prepare、QconfigSetter 与模板

当前仓库主推的混合精度配置方式是 QconfigSetter + templates:

import torch

from horizon_plugin_pytorch.quantization import (
    QconfigSetter,
    get_qconfig,
    prepare,
    qint8,
    qint16,
)
from horizon_plugin_pytorch.quantization.qconfig_setter import (
    ConvDtypeTemplate,
    MatmulDtypeTemplate,
    ModuleNameTemplate,
    SensitivityTemplate,
)

setter = QconfigSetter(
    reference_qconfig=get_qconfig(),
    templates=[
        ModuleNameTemplate({"": torch.float16}),
        ConvDtypeTemplate(input_dtype=qint8, weight_dtype=qint8),
        MatmulDtypeTemplate(input_dtypes=qint8),
        SensitivityTemplate(
            sensitive_table=table,
            topk_or_ratio=0.2,
            sensitive_type="activation",
            low_precision_dtype=qint8,
            high_precision_dtype=qint16,
        ),
    ],
)

qat_model = prepare(model, example_inputs=example_inputs, qconfig_setter=setter)

Read the full file on GitHub · 464 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 464 lines · 49 tokens per session scan A 00f333f20003

Subscribe to this mod's changes

j6-plugin-precision-tuning is a skill published in the GitHub repository HorizonRobotics/OE-Skills (27 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 49 tokens to every session and 5,052 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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