chenhuiying的博客

CUDA范例精解通用GPU编程CUDA by Example addresses the heart of the software development challenge by leveraging one of the most innovative and powerful solutions to the problem of programming the massively parallel accelerators in recent years. This book introduces you to programming in CUDA C by providing examples and insight into the process of constructing and effectively using NVIDIA GPUs. It presents introductory concepts of parallel computing from simple examples to debugging (both logical and performance), as well as covers advanced topics and issues related to using and building many applications. Throughout the book, programming examples reinforce the concepts that have been presented. The book is required reading for anyone working with accelerator-based computing systems. It explores parallel computing in depth and provides an approach to many problems that may be encountered. It is especially useful for application developers, numerical library writers, and students and teachers of parallel computing. I have enjoyed and learned from this book, and I feel confident that you will as well. Jack Dongarra University Distinguished Professor, University of Tennessee Distinguished Research Staff Member, Oak Ridge National Laboratory

2 说明 文档大部分内容来自 MongoDB 官网网站，仅供学习使用！ 目录 MongoDB 学习手册 ......................................................................................................................... 1 说明........................................................................................................................................... 2 一、 Mongodb 简介 .......................................................................................................... 4 二、 MongoDB 特性 ......................................................................................................... 5 适用场景： ....................................................................................................................... 5 不适用场景： ................................................................................................................... 6 三、 MongoDB 的工作方式.............................................................................................. 6 四、 MongoDB 的下载 ..................................................................................................... 8 五、 MongoDB 的安装 ..................................................................................................... 9 六、 MongoDB 数据类型................................................................................................ 12 1. Timestamp 类型 ...................................................................................................... 12 2. ObjectId 类型 .......................................................................................................... 12 3. 数据库关联 ............................................................................................................. 14 七、 GridFS 文件系统 ..................................................................................................... 15 八、 索引 ......................................................................................................................... 16 九、 主（Master）/从（slave）数据库同步 ................................................................ 20 1. 建立主/从服务器 ................................................................................................... 20 2. 相关参数说明 ......................................................................................................... 21 3. Slave 顶替 Master ................................................................................................... 22 4. 切换 Master/Slave 角色 ......................................................................................... 22 5. 更新主服务器位置 ................................................................................................. 22 十、 MongoDB 分片和集群............................................................................................ 24 1. 简单分片实例 ......................................................................................................... 24 2. 高级分片实例 ......................................................................................................... 29 十一、 数据库基本操作：增查删改 ............................................................................. 37 1. Insert ....................................................................................................................... 37 2. Query ....................................................................................................................... 38 3. Remove.................................................................................................................... 52 4. Update ..................................................................................................................... 53 十二、 Shell 控制台 ........................................................................................................ 62 1. 执行.js 文件 ............................................................................................................ 62 2. –eval ........................................................................................................................ 62 3. 脚本和互动的区别 ................................................................................................. 62 十三、 安全与认证 ......................................................................................................... 63 1) 开启安全认证 ......................................................................................................... 63 2) 添加用户 ................................................................................................................. 64 3) 认证 ......................................................................................................................... 64 4) 查看用户 ................................................................................................................. 64 5) 添加普通用户 ......................................................................................................... 64 6) 添加只读用户 ......................................................................................................... 64 7) 修改密码 ................................................................................................................. 64 8) 删除用户 ................................................................................................................. 64 十四、 常用 DBA 操作 .................................................................................................... 65 十五、 图形化管理工具 ................................................................................................. 67