An architecture for an extended multiprocessor (XMP) computer system is provided. The XMP computer system includes multiple SMP nodes. Each SMP node includes an XMP interface and a repeater structure coupled to the XMP interface. The SMP nodes are co…

http://en.wikipedia.org/wiki/Intel_MIC Intel MIC From Wikipedia, the free encyclopedia     Intel Many Integrated Core Architecture (MIC) Designer Intel Design manycore extended x86/x64 design Registers General purpose Intel Architecture registers Flo…

Within a multi-processing system including a plurality of processor cores 4, 6operating in accordance with coherent multi-processing, each of the cores includes a cache memory 10, 12 storing local copies of data values from a coherent memory region.…

21.总线连接 总线是提供给计算机中每块电路板的数字信号的集合,这些信号可以分为4类:地址信号,数据输入信号,数据输出信号,控制信号.另外,总线给计算机中的各个电路板提供电源. S-100总线:早期流行,可以用在8080和6800处理器上.规格为5.3×10英寸,电路板的一边有100个 接头可插在插槽里.S-100有16个地址信号,8个数据输入信号,8个数据输出信号,8个中断信号. IBM的ISA总线(Industry standard architecture)----->IBM的MCA总线(…

转自Linux中国 驱动程序是使内核能够沟通和操作硬件或协议(规则和标准)的小程序.没有驱动程序,内核不知道如何与硬件沟通或者处理协议(内核实际上先发送指令给BIOS,然后BIOS传给硬件). Linux的内核代码在驱动程序文件夹中以源代码的形式包含了许多驱动程序.驱动文件夹中的每个文件夹会在下面说明.在配置和 编译内核时,这样有助于你了解驱动程序.否则,用户可能会在编译时加入不必要的或者漏掉重要的驱动.驱动代码通常会包含一个单行注释来指出驱动的目的. 比如,tc的驱动代码,有一行的注释说是用于…

0.1 TopicNotes of Lin C., Snyder L.. Principles of Parallel Programming. Beijing: China Machine Press. 2008. (1) Parallel Computer Architecture - done 2015/5/24(2) Parallel Abstraction - done 2015/5/28(3) Scable Algorithm Techniques - done 2015/5/30(…

PCI总线作为处理器系统的局部总线,主要目的是为了连接外部设备,而不是作为处理器的系统总线连接Cache和主存储器.但是PCI总线.系统总线和处理器体系结构之间依然存在着紧密的联系. PCI总线作为系统总线的延伸,其设计考虑了许多与处理器相关的内容,如处理器的Cache共享一致性和数据完整性,以及如何与处理器进行数据交换等一系列内容.其中Cache共享一致性和数据完整性是现代处理器局部总线的设计的重点和难点,也是本书将重点讲述的主题之一. 独立地研究PCI总线并不可取,因为PCI总线仅是处理器系…

本文正文其实是自己的毕业论文,现在搬上来有两个原因. 一是之前大学的文档都放在百度网盘上,大概去年的时候百度网盘改版搞得不太稳定,文件夹移动次数一多里边就会有一些文件丢失了,也没有很在意.但前几天看申请软著的汇编记事本代码文件怎么找都找不到,自己电脑也早就换了,放网盘不靠谱放自己电脑也不靠谱,这情况怕是现在没丢的东西以后也会丢有必要另想他法保存. 二是当时论文答辩的时候,导师问“你觉得你的扫描器对比网上现有的扫描器有什么优势”,当时回答的是“现在网上很多扫描器很多是闭源的这扫描器是开源的”---…

How PCI Works | PCI工作原理 Your computer's components work together through a bus. Learn about the PCI bus and PCI card, such as the one above. See more computer hardware pictures. The power and speed of computer components has increased at a steady rat…

Oracle内存全面分析 Oracle的内存配置与oracle性能息息相关.而且关于内存的错误(如4030.4031错误)都是十分令人头疼的问题.可以说,关于内存的配置,是最影响Oracle性能的配置.内存还直接影响到其他两个重要资源的消耗:CPU和IO. 首先,看看Oracle内存存储的主要内容是什么: 程序代码(PLSQL.Java): 关于已经连接的会话的信息,包括当前所有活动和非活动会话: 程序运行时必须的相关信息,例如查询计划: Oracle进程之间共享的信息和相互交流的信息,例如锁:…

转自:http://www.lai18.com/content/432194.html 驱动程序是使内核能够沟通和操作硬件或协议(规则和标准)的小程序.没有驱动程序,内核不知道如何与硬件沟通或者处理协议(内核实际上先发送指令给BIOS,然后BIOS传给硬件). Linux的内核代码在驱动程序文件夹中以源代码的形式包含了许多驱动程序.驱动文件夹中的每个文件夹会在下面说明.在配置和 编译内核时,这样有助于你了解驱动程序.否则,用户可能会在编译时加入不必要的或者漏掉重要的驱动.驱动代码通常会包含一个单…

最近对计算机中并发(concurrency)和并行(parallesim)这两个词的区别很迷惑,将搜索到的相关内容整理如下. http://www.vaikan.com/docs/Concurrency-is-not-Parallelism/#slide-7 定义: 并发 Concurrency 将相互独立的执行过程综合到一起的编程技术. 并行 Parallelism 同时执行(通常是相关的)计算任务的编程技术. 并发 vs. 并行 并发是指同时处理很多事情. 而并行是指同时能完成很多事情. 两…

A data processor (104) is described. The data processor (104) is capable of decoding and executing a first instruction (212) of a first instruction set and a second instruction (213-219) in a second instruction set wherein the first instruction (212)…

之前聊过tcpdump 抓包原理,tcpdump使用packet 抓包,使用packet_map 完成零拷贝.但是这个零拷贝也有点假,何为假呢?从网卡到内存走的dma,哪能不能直接从dma拷贝到用户空间呢??  使用dpdk直接从网卡中轮询数据? 如果使用现有的tcpip协议栈,反正内核态需要处理网络数据,那就将数据线从网卡缓存dma拷贝到内核态buff吧,然后再来一个所谓的零拷贝到用户空间吧... 在https://blog.cloudflare.com/sockmap-tcp-splicin…

在安装电脑系统时,进行内核配置时涉及到各种总线类型,有必要了解一下什么是总线.总线的类型.局部总线.局部总线类型和接口方式. 1)总线总线是一组通信线.在机器内部, 各部件通过总线连接; 对于外部设备, 通过总线连接相应设备的接口电路, 然后再与该设备相连. 一般接口电路又叫适配器或接口卡.外部总线分为数据总线(data bus).地址总线(address bus)和控制总线(control bus). 数据总线中传送的是数据信息, 地址总线中传送的是地址信息, 控制总线中传送的是控制信号.总线…

An embodiment provides a virtual address cache memory including: a TLB virtual page memory configured to, when a rewrite to a TLB occurs, rewrite entry data; a data memory configured to hold cache data using a virtual page tag or a page offset as a c…

Minimizing the overall power conservation in a symmetric multiprocessor system disposed in a system-on-chip (SoC) depends on using voltage islands operated at different voltages such that similar circuits will perform at significantly different level…

One embodiment of the present invention provides a store queue that applies the stores to a memory subsystem in program order. This store queue includes a content-addressable memory (CAM), which holds pending stores and facilitates looking up stores…

COMPUTER OR GANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION A multicore computer, also known as a chip multiprocessor, combines two or more processors (called cores) on a single piece of silicon (called a die). Typically, each cor…

COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION An SMP operating system manages processor and other computer resources so that the user perceives a single operating system controlling system resources. In fact, such a c…

https://en.wikipedia.org/wiki/Symmetric_multiprocessor_system A symmetric multiprocessor system (SMP) is a multiprocessor system with centralized shared memory called main memory (MM) operating under a single operating system with two or more homogen…

http://anandtech.com/show/2549 Now that NVIDIA’s has announced its newest GPU architecture (the GeForce GTX 200 series), interesting architectural details are popping up on the web. The best writeup I’ve found is by AnandTech. In the past, such detai…

http://www.codeproject.com/Articles/515253/Service-Oriented-Architecture-and-WCF Introduction This article will not talk about how to create and host a WCF service rather we stress on importance of SOA and WCF. If you are a advanced WCF developer the…

[Game Engine Architecture 6] 1.Data-Parallel Computations A GPU is a specialized coprocessor designed specifically to accelerate those computations that involve a high degree of data parallelism. It does so by combining SIMD parallelism (vectorized A…

[Game Engine Architecture 1] 1.This book is really just the beginning of a fascinating and potentially lifelong journey. We’ll focus primarily on the engine itself, including a host of low-level foundation systems, the rendering engine, the collision…

当今数据计算领域的主要应用程序和模型可大致分为三大类: (1)联机事务处理(OLTP). (2)决策支持系统(DSS) (3)企业信息通讯(BusinessCommunications) 上述三类系统设计人员在计算平台的体系结构方面可以选择: (1)小型独立服务器模式 (2)对称多处理SMP(Symmetrical Multi-Processing)模式 (3)大规模并行处理MPP(Massive Parallel Processing)模式 (4)非统一内存访问架构NUMA(Non Unifo…

最近研究内存关系数据库的设计与实现,下面一篇为berkeley db原始两位作为的Berkeley DB设计回忆录: Conway's Law states that a design reflects the structure of the organization that produced it. Stretching that a bit, we might anticipate that a software artifact designed and initially produ…

What is SAP R/3? SAP R/3 is a 3 tier architecture consisting of 3 layers Presentation Application Database In simple words, it’s a client server architecture. R signifies Real-time system 3 represents -  3-tier architecture. User's PC:-  Users can ac…

Most of the Android user are using their Android phone just for calls, SMS, browsing and basic apps, But form the development prospective, we should know about  Android internal structure. Android uses several partitions (like boot, system, recovery,…

SummaryObject-oriented programming was supposed to unify the perspectives of the programmer and the end user in computer code: a boon both to usability and program comprehension. While objects capture structure well, they fail to capture system actio…