PPT-CS 5204

Fast Dynamic Binary Translation for the Kernel Piyus Kedia and Sorav Bansal SOSP 2013 Presenter Apoorva Garg Outline Paper Presentation Background DBT Architecture DBT Optimizations. Reasoning about concurrency and communication (Part 1).. CS5204 – Operating Systems. 1. CS 5204 – Operating Systems. 2. Theoretical Foundations of Concurrency. A formal study of concurrency enables:. A Consensus Algorithm for . Fault Tolerant Replication. CS 5204 – Fall, 2008. System Model. Messages. possible indefinite delay. possible duplication or loss. delivered messages not corrupted. . . .. Motivation, Problems, Directions. Dennis Kafura - CS 5204 - Operating Systems. 1. Dennis Kafura - CS 5204 - Operating Systems. 2. Reasons for Concurrency. multitasking. parallelism. performance. coordination. . Asynchronous . Meta-Data Protection in File System. . Authors . - Margo Seltzer, Gregory Ganger et all. . Presenter – Abhishek Abhyankar . . MS Computer Science Virginia Tech. The Global State Recording Algorithm. CS 5204 – Operating Systems. 2. The Model. Node properties . No shared memory . No global clock . node. channel. Channel properties: . FIFO . loss free . non­duplicating. Distributed Storage. 1. Dennis Kafura – CS5204 – Operating Systems. CS 5204 – Operating Systems. 2. Peer-to-Peer Systems. Definition. : “Peer-to-peer systems can be characterized as distributed systems in which all nodes have identical capabilities and responsibilities, and all communication is symmetric.” –. Maurice Herlihy (DEC), J. Eliot & B. Moss (UMass). Presenter: Mariano Diaz. CS 5204 – Fall, 2009. Part 1: Concepts and Hardware-based Approaches. Introduction. What’s a transaction?. Transaction: a finite sequence of machine instructions, executed by a single process, that satisfies the following:. Operating . Systems. Godmar Back. Disks & File Systems. CS 5204 Fall 2015. Filesystems. Consistency & Logging. CS 5204 Fall 2015. Filesystems & Managing Faults. Filesystem’s promise:. Persistence. Dennis Kafura - CS 5204 - Operating Systems. 1. Dennis Kafura - CS 5204 - Operating Systems. 2. Reasons for Concurrency. multitasking. parallelism. performance. coordination. Moore’s Law. Dennis Kafura - CS 5204 - Operating Systems. Respirable. Crystalline Silica. Mariano Kramer, Associate Cal OSHA Safety Engineer. Cal OSHA Update. November 4, 2016. Status of Final Rule. Horcher. rulemaking procedure. Adopted by California Occupational Safety and Health Board – September 2016 . 1. CS 5204 – Operating Systems. 2. Fault Tolerance. erroneous state. error. valid state. failure. causes. fault. leads to. recovery. An error is a manifestation of a fault that can lead to a failure.. Fault Tolerant Replication. CS 5204 – Fall, 2008. System Model. Messages. possible indefinite delay. possible duplication or loss. delivered messages not corrupted. . . .. replicas. client. Replicas. Article ArticleThememorytraceofastressfulepisodeAnneBierbrauer,Marie-ChristinFellner,RebekkaHeinen,OliverT.Wolf,andNikolaiAxmacherDepartmentofNeuropsychology,InstituteofCognitiveNeuroscience,Facultyof CS5204 – Operating Systems. 1. CS 5204 – Operating Systems. 2. A Process with Alternative Behavior. A vending machine that dispenses chocolate candies allows either a 1p (p for pence) or a 2p coin to be inserted. After inserting a 1p coin, a button labelled “little” may be pressed and the machine will then dispense a small chocolate. After inserting a 2p coin, the “big” button may be pressed and the machine will then dispense a large chocolate. The candy must be collected before additional coins can be inserted. .