Reference: dRMT, SIGCOMM 2017 今年的SIGCOMM17会议上,Cisco System和MIT的团队针对RMT模型现有的问题,合作发表了这篇"dRMT: Disaggregated Programmable Switching",从芯片方面推近了可编程数据平面领域的发展.本次SIGCOMM17会议上,数据平面可编程领域再次成为焦点,具体内容可以参考: ACM SIGCOMM 2017直击:数据平面可编程为网络创新插上翅膀 sigcomm17 dRMT: D…

dRMT: Disaggregated Programmable Switching 2017年SIGCOMM会议上提出的新型可编程交换机架构,对2013年提出的RMT架构存在的问题进行了优化. 主要体现在内存的优化和包处理的灵活性. INTRODUCTION 每一个交换机芯片都有很多"匹配-动作"阶段(stages) 每个阶段对每一个数据包均采用以下操作: 从包头中提取特定字段,形成match-key 根据match-key的信息,进行流表匹配 根据匹配结果,执行相应的动作 举个例子…

http://www.powerguru.org/changing-the-output-voltage-of-a-switching-regulator-on-the-fly/ There are many different ways to change the output voltage Applications that require the output voltage of a power supply to change dynamically come from a wide…

FIELD OF INVENTION This invention relates to computer graphics processing, and more specifically to computer graphics processing using two or more architecturally distinct graphics processors. BACKGROUND OF INVENTION Many computing devices utilize hi…

If you want to disable the screen switching, and you don't want tochange your termcap, you can add these lines to your .vimrc: >        :set t_ti= t_te= The default of my terminal tool XShell is screen switching, after editing from vim. If you want t…

Posted by: Margaret Rouse WhatIs.com   Contributor(s): Robert Sturt This definition is part of our Essential Guide: Building SD-WAN architecture into your world   Sponsored News OpenFlow and Enterprise Networks Explained –Dell How to Use a Threat Int…

Packet Switching: - In a packet switched network data is transmitted in blocks(packets), typically less than 1KB in length. - Each packet contains a chunk of data and sufficient information for the packet to navigate to its destination and the origin…

http://www.embedded.com/design/embedded/4231326/Taking-advantage-of-the-Cortex-M3-s-pre-emptive-context-switches The ARM Cortex-M3 (CM3) architecture is a 32-bit microcontroller core designed to replace many 8-bit and 16-bit devices by offering faste…

When working on a project, it is much easier to work on features and bugs in isolation of the rest of the project. We can do this with git branches; a branch is a copy of the working directory, staging area, and project history; we create a branch, t…

Lab 15 Switching Users and Setting a Umask Goal: Become familiar with the use of several essential commands in useridentification and account switching. System Setup: A working, installed Red Hat Enterprise Linux system with an unprivilegeduser accou…

一.虚拟交换系统(VSS) VSS是一种网络虚拟化技术,讲两台Catalyst 6500系列交换机组合为单一虚拟交换机,从而提高运营效率.增强不间断通信,并将系统带宽容量扩展到1.4Tbps.在初始阶段,VSS将使两台物理Cisco Catalyst 6500系列交换机作为单一逻辑虚拟交换机运行,称为虚拟交换系统1440(VSS1440). 虚拟交换系统1440与传统网络设计的比较 二.VSS1440 VSS1440指由两台采用Virtual Switching Supervisor 720-1…

http://coactionos.com/embedded%20design%20tips/2013/10/09/Tips-Context-Switching-on-the-Cortex-M3/ The ARM Cortex-M3 architecture is designed with special features to facilitate implementing a pre-emptive RTOS. The system code takes advantage of thes…

Github链接: Exercise 2: Implementing TCP flowlet switching P4 Tutorials Flowlet Switching 最近P4社区更新了Tutorial这个Demo的代码,今天偶然发现了它并且觉得很有学习的价值,于是简单的写一个对源码的解读. 源码 simple_router.p4:Github Source Code 元数据intrinsic.p4: /* 这里省略了Barefoot的License声明 */ header_type i…

NOTE Capsules Example 1.Type Field: excute forwarding routine => carry program 2.Previous address: If the node now is not an active network node, it can get the preivous address and forwarding routine from the field. 3.Dependent Fields: necessary! It…

接上第二点 NOTE (2)active networks => Programmability in networks(1990s) Sturcture: What are active networks? motivation for active networks technologies behind active networks How do active networks related to SDN? The legacy of active networks What are…

一. 进程Context 定义 当一个进程在执行时, CPU的所有寄存器中的值.进程的状态以及堆栈中的内容,比如各个变量和数据,包括所有的寄存器变量.进程打开的文件.内存信息等.这些信息被称为该进程的上下文(Context). 一个进程的Context可以分为三个部分:用户级上下文.寄存器上下文以及系统级上下文: (1)用户级上下文: 正文.数据.用户堆栈以及共享存储区:       (2)寄存器上下文: 通用寄存器.程序寄存器(IP).处理器状态寄存器(EFLAGS).栈指针(ESP):   …

Swing State: Consistent Updates for Stateful and Programmable Data Planes 年份:2017 来源:ACM 本篇论文解决的问题 Before 原来的状态迁移是三角形路由的方式: NF1->Controller->NF2 浪费时间.还需要控制器开辟额外的存储空间 Now 现在把要更新的流量attach到数据平面的数据流上,借助数据流之手(信使)传递状态信息. ABSTRACT 背景:由于可编程带状态数据平面的飞速发展,得益于数…

A 288μW Programmable Deep-Learning Processor with 270KB On-Chip Weight Storage Using Non-Uniform Memory Hierarchy for Mobile Intelligence 单位:Michigan,CubeWorks(密歇根大学,CubeWorks公司) 又是一款做DNN加速的面向IOT的专用芯片,主要特点是有L1~L4四级不同速度.能耗的层次化存储.通过对全连接矩阵x向量的计算流程优化,最终可…

http://www.eetimes.com/author.asp?section_id=36&doc_id=1320289 Seeing the new ADC IP being bandied about by FPGA vendors got William Murray wondering what is behind all this.   Seeing the new analog-to-digital converter (ADC) IP being bandied around…

转自:http://blog.csdn.net/tspatial_thunder/article/details/5937701 现在的游戏图形部分越来多依靠GPU来渲染绘制.说起GPU先说着色器,着色器是可编程的(programmable),分为顶点着色器和像素着色器.着色器是一段运行在GPU上的程序,可以取代渲染的固定功能流水线中部分功能. 在D3d9c可以用固定管道渲染(fixed function pipeline),也可以用可编程的管道(programmable function pi…

Wayback When I remember being at Oracle Open World when Larry Ellison unveiled Oracle Enterprise Linux (OEL, which is now just Oracle Linux, or OL).    I think I even have a foam Oracle penguin and maybe even a t-shirt somewhere.  I was trying to und…

P2845 [USACO15DEC]Switching on the Lights 开关灯 题目背景 来源:usaco-2015-dec Farm John 最近新建了一批巨大的牛棚.这些牛棚构成了一个N*N的矩形网络.(1<n<100) 然而bessie十分怕黑,他想计算可以把多少个牛棚的灯打开. 题目描述 有NN个房间,组成了一张NN的网格图,Bessie一开始位于左上角(1,1),并且只能上下左右行走. 一开始,只有(1,1)这个房间的灯是亮着的,Bessie只能在亮着灯的房间里活动.…

转自:http://blog.csdn.net/tianlesoftware/article/details/6461207 一. 进程Context 定义 当一个进程在执行时, CPU的所有寄存器中的值.进程的状态以及堆栈中的内容,比如各个变量和数据,包括所有的寄存器变量.进程打开的文件.内存信息等.这些信息被称为该进程的上下文(Context). 一个进程的Context可以分为三个部分:用户级上下文.寄存器上下文以及系统级上下文: (1)用户级上下文: 正文.数据.用户堆栈以及共享存储区:…

P2828 Switching on the Lights(开关灯) 题目背景 来源:usaco-2015-dec Farm John 最近新建了一批巨大的牛棚.这些牛棚构成了一个N*N的矩形网络.(1<n<100) 然而bessie十分怕黑,他想计算可以把多少个牛棚的灯打开. 题目描述 有N*N个房间,组成了一张N*N的网格图,Bessie一开始位于左上角(1,1),并且只能上下左右行走. 一开始,只有(1,1)这个房间的灯是亮着的,Bessie只能在亮着灯的房间里活动. 有另外M条信息,每…

https://mp.weixin.qq.com/s/bAPiPURZd-YsbV5PbzwpQQ 编者按:随着各大公司对于数据计算的要求越来越高,实时AI成为了研究者们关注的重点.在美国西雅图举行的微软Build开发者大会上,微软发布了最新的基于FPGA的Project Brainwave预览版.Project Brainwave是一个旨在加速实时AI计算的硬件架构,能够部署在Azure云端以及边缘设备上,帮助用户实现低成本的实时AI计算.本文译自微软人工智能博客“Real-time AI:…

P2846 [USACO08NOV]光开关Light Switching 题目大意: 灯是由高科技——外星人鼠标操控的.你只要左击两个灯所连的鼠标, 这两个灯,以及之间的灯都会由暗变亮,或由亮变暗.右击两个灯所连的鼠 标,你就可以知道这两个灯,以及之间的灯有多少灯是亮的.起初所有灯都是暗的,你的任务是在LZ之前算出灯的亮灭. 线段树的懒标记下传 #include<bits/stdc++.h> #define N 1000005 #define LL long long #define RE r…

A computer system is described having one or more host processors, a host chipset and an input/output (I/O) subsystem. The host processors are connected to the host chipset by a host bus. The host chipset is connected to the input/output subsystem by…

In one embodiment, a method includes transitioning control to a virtual machine (VM) from a virtual machine monitor (VMM), determining that a VMM timer indicator is set to an enabling value, and identifying a VMM timer value configured by the VMM. Th…

A method and mechanism for performing an unconditional stack switch in a processor. A processor includes a processing unit coupled to a memory. The memory includes a plurality of stacks, a special mode task state segment, and a descriptor table. The…

A real-time operating system (RTOS) for use with minimal-memory controllers has a kernel for managing task execution, including context switching, a plurality of defined tasks, individual ones of the tasks having subroutines callable in nested levels…