PPT-Snoop cache

AMANO Hideharu Keio University hungaam ics keio ac jp Textbook 　 pp4060 Cache memory A small high speed memory for storing frequently accessed datainstructions. Message Passing Sharedmemory single copy of shared data in memory threads communicate by readingwriting to a shared location Messagepassing each thread has a copy of data in its own private memory that other threads cannot access threads communicate Autumn 2006 CSE P548 Cache Coherence 6 A Lowend MP brPage 4br Autumn 2006 CSE P548 Cache Coherence 7 Cache Coherency Prot ocol Implementations Snooping used with lowend MPs few processors centralized memory busbased distributed implementation  Stefan . Schackow. Program Manager. Microsoft Corporation. PC41. What's the current state?. Why is it changing?. How are we changing it?. .NET Framework Caching. A great in-memory object cache in ASP.NET. Marc De Melo. Outline. Non-Uniform Cache Architecture (NUCA). Cache Coherence. Implementation of directories in multicore architecture. 2. Non-Uniform Cache Architecture [1]. Uniform Cache Architecture. for 3D memory systems. CAMEO. 12/15/2014 MICRO. Cambridge, UK. Chiachen Chou, Georgia Tech. Aamer. . Jaleel. , Intel. Moinuddin. K. . Qureshi. , Georgia Tech. Executive Summary. How to use . S. tacked DRAM: Cache or Memory. ENCODER. EEL 6935 Embedded Systems. Long Presentation 2. Group Member: Qin Chen, Xiang Mao. ECE@UFL. 4/2/2010. 1. Outline. Design goals and challenges. Video encoding basics. Memory/cache optimization. AMANO, Hideharu. Textbook pp.60-68. Fork-join: Starting and finishing parallel processes. fork. Usually, these processes (threads). can share variables. fork. join. join. Fork/Join is a way of synchronization. and . Coarse-Grain Memory Tracking. Andreas . Moshovos. Univ. of Toronto/ECE. Short Course at the University of Zaragoza, July 2009. Some slides by J. . Zebchuk. or the original paper authors. JETTY . Varun. . Mathur. Mingwei. Liu. 1. I-cache and address tag . Instruction cache has. Large chip area. High access frequency=>switching power. Example:. Direct mapped I-cache. 1024 entries (=>1024 one way sets). Mark Gebhart. 1,2 . Stephen W. Keckler. 1,2. Brucek Khailany. 2. Ronny Krashinsky. 2. . William J. Dally. 2,3. 1. The University of Texas at Austin . 2. NVIDIA . 3. Stanford University. Methodology. Aamer . Jaleel*. , . Joseph . Nuzman. , Adrian . Moga. ,. Simon Steely Jr., Joel . Emer. *. Intel Corporation, . VSSAD. ( . *. Now at NVIDIA ). International Symposium on High Performance Computer Architecture (HPCA-2015). Smruti R. Sarangi, IIT Delhi. Contents. Overview of the Directory Protocol. Details. Optimizations. Basic Idea of a Coherence Protocol. Memory Level . n. Memory Level . n+2. Private Cache. Private Cache. With a superscalar, we might need to accommodate more than 1 per cycle. Typical server and . m. obile device. memory hierarchy. c. onfiguration with. b. asic sizes and. access times. PCs and laptops will. ABSTRACTCachecoherencyiscrucialtomulti-coresystemswithasharedmemoryprogrammingmodel.Coherencyprotocolshavebeenformallyveriedatthearchitecturallevelwithrelativeease.However,severalsubtleissuescreep