PPT-Checkpointing-Recovery CS5204 – Operating Systems

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. CnC. ). A programming model for . parallel programming. 1. Dennis Kafura – CS5204 – Operating Systems. CnC. Dennis Kafura – CS5204 – Operating Systems. 2. Kathleen . Knobe. Intel. Overview. Ideas. Authors : Sanjay . Ghemawat. , Howard . Gobioff. , Shun-. Tak. Leung. Presentation by: Vijay Kumar Chalasani. 1. CS5204 – Operating Systems. I. ntroduction. GFS is a scalable distributed file system for large data intensive applications. Presentation by: Eric Frohnhoefer. 1. CS5204 . – Operating Systems. CS5204 . – Operating Systems. Assumptions. Built from inexpensive commodity components. Cheap components frequently fail. Modest number of large files. Presented By: Devarsh Patel. 1. CS5204 . – Operating Systems. CS5204 – Operating Systems. Introduction. Amazon’s e-commerce platform. Requires performance, reliability. . and. efficiency. To support continuous growth, platform needs to be highly scalable. Highly Available Key-Value Store. 1. Dennis Kafura – CS5204 – Operating Systems. Dennis Kafura – CS5204 – Operating Systems. Context. Core e-commerce services need scalable and reliable storage for massive amounts of data. 1. Dennis Kafura – CS5204 – Operating Systems. Dennis Kafura – CS5204 – Operating Systems. Structure of a File System. 2. buffer . cache. improves efficiency. delayed writes, read ahead. improved scheduling. Redux. Changing thread semantics. 1. Dennis Kafura – CS5204 – Operating Systems. Dennis Kafura – CS5204 – Operating Systems. Grace: Overview. Goal. Eliminate classes of concurrency errors. For applications using fork-join parallelism. Integrity Measurement, Reporting, and Evaluation. 1. Dennis Kafura – CS5204 – Operating Systems. Motivation. Reliance on remote clients/servers. Financial records and e-commerce. Electronic medical records. Concurrency for data-intensive applications. 1. Dennis Kafura – CS5204 – Operating Systems. MapReduce. Dennis Kafura – CS5204 – Operating Systems. 2. Jeff Dean. Sanjay . Ghemawat. Dennis Kafura – CS5204 – Operating Systems. Redux. Changing thread semantics. 1. Dennis Kafura – CS5204 – Operating Systems. Dennis Kafura – CS5204 – Operating Systems. Grace: Overview. Goal. Eliminate classes of concurrency errors. For applications using fork-join parallelism. CS5204 – Operating Systems. 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.. Presented by:. Josh Baker. October 9. th. , 2012. 1. CS5204 . – Operating Systems. CS5204 . – Operating Systems. Overview. What is cryptographic security?. Uses. Main Points. What is a . “. Key/Certificate”?. CS5204 – Operating Systems. 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.. 1. Dennis Kafura – CS5204 – Operating Systems. Motivation. Reliance on remote clients/servers. Financial records and e-commerce. Electronic medical records. Cloud computing. Threats to clients from remote servers.