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README
Apache-2.0

Paddle Lite

English | 简体中文

Build Status Documentation Status Release License

Paddle Lite 是一个高性能、轻量级、灵活性强且易于扩展的深度学习推理框架,定位于支持包括移动端、嵌入式以及服务器端在内的多硬件平台。

当前 Paddle Lite 不仅在百度内部业务中得到全面应用,也成功支持了众多外部用户和企业的生产任务。

快速入门

使用 Paddle Lite,只需几个简单的步骤,就可以把模型部署到多种终端设备中,运行高性能的推理任务,使用流程如下所示:

一. 准备模型

Paddle Lite 框架直接支持模型结构为 PaddlePaddle 深度学习框架产出的模型格式。目前 PaddlePaddle 用于推理的模型是通过 save_inference_model 这个 API 保存下来的。 如果您手中的模型是由诸如 Caffe、Tensorflow、PyTorch 等框架产出的,那么您可以使用 X2Paddle 工具将模型转换为 PadddlePaddle 格式。

二. 模型优化

Paddle Lite 框架拥有优秀的加速、优化策略及实现,包含量化、子图融合、Kernel 优选等优化手段。优化后的模型更轻量级,耗费资源更少,并且执行速度也更快。 这些优化通过 Paddle Lite 提供的 opt 工具实现。opt 工具还可以统计并打印出模型中的算子信息,并判断不同硬件平台下 Paddle Lite 的支持情况。您获取 PaddlePaddle 格式的模型之后,一般需要通该 opt 工具做模型优化。opt 工具的下载和使用,请参考模型优化方法

三. 下载或编译

Paddle Lite 提供了 Android/iOS/X86 平台的官方 Release 预测库下载,我们优先推荐您直接下载 Paddle Lite 预编译库。 您也可以根据目标平台选择对应的源码编译方法。Paddle Lite 提供了源码编译脚本,位于 ./lite/tools/ 文件夹下,只需要准备环境调用编译脚本两个步骤即可一键编译得到目标平台的 Paddle Lite 预测库。

四. 预测示例

Paddle Lite 提供了 C++、Java、Python 三种 API,并且提供了相应 API 的完整使用示例:

您可以参考示例中的说明快速了解使用方法,并集成到您自己的项目中去。

针对不同的硬件平台,Paddle Lite 提供了各个平台的完整示例:

主要特性

  • 支持多平台:涵盖 Android、iOS、嵌入式 Linux 设备、Windows、macOS 和 Linux 主机
  • 支持多种语言:包括 Java、Python、C++
  • 轻量化和高性能:针对移动端设备的机器学习进行优化,压缩模型和二进制文件体积,高效推理,降低内存消耗

持续集成

System X86 Linux ARM Linux Android (GCC/Clang) iOS
CPU(32bit) Build Status Build Status Build Status Build Status
CPU(64bit) Build Status Build Status Build Status Build Status
OpenCL - - Build Status -
Metal - - - Build Status
百度 EdgeBoard FPGA - Build Status - -
华为麒麟 NPU - - Build Status -
华为昇腾 NPU Build Status Build Status - -
百度昆仑 XPU Build Status Build Status - -
瑞芯微 NPU - Build Status - -
联发科 APU - - Build Status -
比特大陆 NPU - Build Status - -
晶晨 NPU - Build Status Build Status -
颖脉 NPU - Build Status - -
英特尔 FPGA - Build Status - -

架构设计

Paddle Lite 的架构设计着重考虑了对多硬件和平台的支持,并且强化了多个硬件在一个模型中混合执行的能力,多个层面的性能优化处理,以及对端侧应用的轻量化设计。

其中,Analysis Phase 包括了 MIR(Machine IR) 相关模块,能够对原有的模型的计算图针对具体的硬件列表进行算子融合、计算裁剪 在内的多种优化。Execution Phase 只涉及到 Kernel 的执行,且可以单独部署,以支持极致的轻量级部署。

进一步了解 Paddle Lite

如果您想要进一步了解 Paddle Lite,下面是进一步学习和使用 Paddle Lite 的相关内容:

文档和示例

关键技术

FAQ

  • FAQ:常见问题,可以访问 FAQ、搜索 Issues、或者通过页面底部的联系方式联系我们 ###贡献代码
  • 贡献代码:如果您想一起参与 Paddle Lite 的开发,贡献代码,请访问开发者共享文档

交流与反馈

  • AIStuio 实训平台端测部署系列课程:https://aistudio.baidu.com/aistudio/course/introduce/22690
  • 欢迎您通过 Github Issues 来提交问题、报告与建议
  • 技术交流微信群:添加 wechat id:baidupaddle,通过后回复关键词「端侧部署」,系统自动邀请加入;技术群 QQ 群: 一群696965088(已满) ;二群,959308808

     

   微信公众号                官方技术交流QQ群

  • 如果您对我们的工作感兴趣,也欢迎加入我们

版权和许可证

Paddle Lite由 Apache-2.0 license 提供。

Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. 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We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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