. . . . . . 498 21. 最后的项目：构建多线程 web server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 507 21.1. 建立单线程 web server . . . . . . . . . . . . . . 对低风险的操作，因为编译器会替你找到经典的错误。同时你可以自信地采取更加激进的优 化，而不会意外引入崩溃或漏洞。 但 Rust 并不局限于底层系统编程。它表达力强、写起来舒适，让人能够轻松地编写出命令行 应用、网络服务器等各种类型的代码——在本书中就有这两者的简单示例。使用 Rust 能让你 把在一个领域中学习的技能延伸到另一个领域：你可以通过编写网页应用来学习 Rust，接着 将同样的技能应用到你的 Raspberry 等主题。社区对学生问题非常欢迎并乐于回答。通过类似这本书以及其他内容的努力，Rust 团队希望使系统概念能为更多人所易于理解，特别是编程新手。 公司 数百家大小规模的公司在生产环境中使用 Rust 完成各种任务，包括命令行工具、Web 服务、 DevOps 工具、嵌入式设备、音视频分析与转码、加密货币、生物信息学、搜索引擎、物联网 （IOT）程序、机器学习，甚至是 Firefox 浏览器的重要部分。 开源开发者 Rust 适合那些希望构建

• 安全人才规模全球领先 • 漏洞挖掘能力全球领先 四个全球领先 世界的360 • 实战能力第一，实战是检验安全企业能力的唯一标准 • 安全研发投入第一，相当于第2名到第10名的总和 • 服务器和算力投入安全行业第一 • 创新能力第一，专利申请1.5万件，安全行业最多 • 服务和响应能力第一 • 用户数量第一，覆盖225个国家和地区的15亿终端 • 企业客户规模第一的网安公司 • 件分析平台 分析研判平台 端 • 服务全球15亿终端 • 覆盖全球225个国家 和地区 终端探针密布 云 数 智 知识 人 云端数据汇聚 • 探针数据上传到云 端 • 20万台服务器 • 210个数据中心 • 4000G出口带宽 • 1000P算力规模 大数据分析 • 总规模2.2EB，每天新 增1.5PB • 测绘数据300亿条 • 90亿+域名信息 • 存活网址库总量50000

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.2 Web framework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Python Module Index 257 Index 259 iiiTornado Documentation, Release 6.5.1 Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking world” example web app for Tornado: import asyncio import tornado class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): return tornado.web.Application([

Tornado [https://www.tornadoweb.org] is a Python web framework and asynchronous networking library, originally developed at FriendFeed [https://en.wikipedia.org/wiki/FriendFeed]. By using non-blocking s] Hello, world Here is a simple “Hello, world” example web app for Tornado: import asyncio import tornado class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello write("Hello, world") def make_app(): return tornado.web.Application([ (r"/", MainHandler), ]) async def main(): app = make_app() app.listen(8888) await asyncio.Event().wait()if

Amazon Web Services, Inc. or its Affiliates. All rights reserved. Presenter: Haichen Shen, Yao Wang Amazon SageMaker Neo, Deep Engine Science Dynamic Model in TVM AWS AI© 2019, Amazon Web Services while loop Limitation of TVM/graph runtime ● Cannot compile and run dynamic models© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Support dynamic model in TVM ● Support Any-dim Graph dispatch for a (sub-)graph In collaboration with Jared Roesch, Zhi Chen, Wei Chen© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. “Any” in Relay typing Any: represent an unknown

© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon/Intel Confidentia Presenter: Zhi Chen, Cody Yu Amazon SageMaker Neo, Deep Engine Science Bring Your Own Codegen to TVM TVM AWS AI© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Considering You... Design and manufacture a deep learning chip which achieves amazing performance on widely-used operators Suppression (NMS) is too new to be supported by your chip But NMS is supported by TVM!© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Let TVM Be the Compiler of Your Chip Your

© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Animesh Jain Amazon SageMaker Neo Compilation of Quantized Models in TVM AWS AI© 2019, Amazon Web Services, Inc. or its Affiliates 𝑟𝑒𝑎𝑙_𝑣𝑎𝑙𝑢𝑒 = 𝑠𝑐𝑎𝑙𝑒 ∗ (𝑞𝑢𝑎𝑛𝑡𝑖𝑧𝑒𝑑_𝑣𝑎𝑙𝑢𝑒 − 𝑧𝑒𝑟𝑜_𝑝𝑜𝑖𝑛𝑡)© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Quantization in TVM • Quantization within pre-quantized graph in TFLite or MxNet • Use high-level wrapper ops of QNN dialect© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. TVM Overview Framework Graph Mxnet TF ….

one can make. The magic of watching AI do your work for you feels like the early days of email and web search – technologies that fundamentally changed our world. The better / faster / cheaper impacts 1993 with release of the World Wide Web (WWW) into the public domain, which allowed users to create websites; however, Tim Berners-Lee invented the World Wide Web in 1989, per CERN. Source: Google, USA Morgan Stanley, ‘Google and Meta: AI vs. Fundamental 2H Debates’ (7/23), Our World in Data, other web sources per MS Years to 50% Adoption of Household Technologies in USA, per Morgan Stanley Consumer

© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Trademark Deploying GluonCV models using TVM© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon with TVM© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Trademark Deploy GluonCV Models https://arxiv.org/pdf/1907.02154.pdf© 2019, Amazon Web Services, Inc. or its Affiliates Amazon Trademark Overall Performance AWS DeepLens Acer aiSage NVIDIA Jetson Nano© 2019, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Amazon Trademark Effects of Vision-specific

ormance-best-practices-together-for-a-spa  "We have created the web in our own image, and it is obese"  Modern web hourglass, web tier is now thin, smarts moved to browser Metrics, metrics everywhere than any other metric  Web Performance: 2 seconds is the magic number Whom did I meet?Attributions and References [1] Speaker Slides and Videos: http://velocityconf.com/devops-web-performance-2015/pub