6. Distributed Shared Memory

Oct 24, 2012

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. What is shared memory?. On-Chip Memory . . CPU. Memory. . . . . . . . CPU1. Memory. . . . . . . . CPU4. CPU2. CPU3. . . . . . . . . . . . . . . . . . . . . . . . Chip package. . Address and data linesConnecting the CPU to the memory. extension. A single-chip computer. A hypothetical shared-memo

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6. Distributed Shared Memory

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Distributed Shared Memory

Distributed Shared Memory. Distributed Shared Memory Making the main memory of a cluster of computers look as though it is a single memory with a single address space. Then can use shared memory programming techniques. DSM System Still need messages or mechanisms to get data to processor, but

825 views • 55 slides

CSS434 Distributed Shared Memory Textbook Ch18

CSS434 Distributed Shared Memory Textbook Ch18. Professor: Munehiro Fukuda. Memory. Memory. Memory. CPU 1. CPU 1. CPU 1. :. :. :. CPU n. CPU n. CPU n. MMU Page Mgr. MMU Page Mgr. MMU Page Mgr. Node 2. Node 0. Node 1. Basic Concept. address. Distributed Shared Memory

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Distributed Shared Memory CIS825 Project Presentation

Distributed Shared Memory CIS825 Project Presentation. Sathish R. Yenna Avinash Ponugoti Rajaravi Kollarapu Yogesh Bharadwaj Sethuraman Subramanian Nagarjuna Nagulapati Manmohan Uttarwar. Distributed Shared Memory. Introduction Consistency models Sequential consistency PRAM consistency

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Distributed Shared Memory

CS425/CSE424/ECE428 – Distributed Systems. Distributed Shared Memory. Some material derived from slides by I. Gupta, M. Harandi , J. Hou , S. Mitra , K. Nahrstedt , N. Vaidya. The Basic Model of DSM . Shared Address Space. 0. 1. 2. 3. 4. 5. 6. 7. 8. 9. 0. 2. 1. 4. 3. 6.

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Distributed Shared Memory

Chapter 9. Distributed Shared Memory. Introduction Implementing Distributed Shared Memory (DSM) Achieving Consistent Memory in a DSM System DSM Programming Systems Implementing a Simple DSM System. Introduction.

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Distributed Shared Memory (part 1)

Distributed Shared Memory (part 1). Distributed Shared Memory (DSM). shared memory. network. mem0. mem1. mem2. memN. proc0. proc1. proc2. procN. Shared memory programming. Standard – pthread synchronizations Barriers Locks Semaphores. Sequential SOR.

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Region-Based Software Distributed Shared Memory

Region-Based Software Distributed Shared Memory. Song Li, Yu Lin, and Michael Walker CS 656 -- Operating Systems May 1, 2000. Outline. Motivation Problems DSM Models Proposed Solution Conclusion. Motivation. Share distributed resources to increase computing power

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Distributed Shared Memory (DSM)

Distributed Shared Memory (DSM). Distributed Shared Memory. Message Passing Paradigm Send (recipient, data) Receive (data) Shared Memory Paradigm Data= Read (address) Write (address, data). easy to implement hard to program no global clock

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Distributed shared memory

Distributed shared memory. motivation and the main idea consistency models strict and sequential causal PRAM and processor weak and release implementation of sequential consistency implementation issues granularity thrashing page replacement. DSM idea.

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Distributed Shared Memory (DSM)

Distributed Shared Memory (DSM). Introduction Basically there are TWO IPC paradigms in DOS Message passing and RPC Distributed Shared Memory (DSM) The DSM provides to processes in a system with a shared address space

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Distributed Shared Memory

Distributed Shared Memory. Motivation. DSM is a system module that allows machines with no physical shared memory to share a single virtual address space benefits easier to design and implement parallel algorithms easier to share data by reference

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Distributed Shared Memory and Sequential Consistency

Distributed Shared Memory and Sequential Consistency. Outline. Consistency Models Memory Consistency Models Distributed Shared Memory Implementing Sequential Consistency in Distributed Shared Memory. Consistency.

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SECTION D Distributed Shared Memory

SECTION D Distributed Shared Memory. What is shared memory?. On-Chip Memory. CPU2. Chip package. CPU. Memory. CPU1. Memory. CPU3. extension. CPU4. Address and data lines Connecting the CPU to the memory. A single-chip computer. A hypothetical shared-memory Multiprocessor.

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Distributed Shared Memory

Distributed Shared Memory. Distributed Shared Memory. Middleware Memory that is distributed and duplicated appears local and as single copy Hides complexity. Designing DSM. Data structure (byte, object, immutable) Synchronization constructs Consistency model (ordering of updates)

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Distributed Shared Memory

Distributed Shared Memory. Based on Reference paper: Distributed Shared Memory, Concepts and Systems. Shared Memory. We have already seen some kinds of shared memory mechanisms shared memory symmetric multiprocessors: all memory is shared and equidistant from processors

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Distributed Resource Management: Distributed Shared Memory

Distributed Resource Management: Distributed Shared Memory. Distributed shared memory (DSM). What The distributed shared memory (DSM) implements the shared memory model in distributed systems, which have no physical shared memory

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Distributed Shared Memory

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Distributed Resource Management: Distributed Shared Memory

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Object-Based Distributed Shared Memory

Object-Based Distributed Shared Memory. Arnshea Clayton CSC 8320 Advanced Operating Systems. Overview. Objects defined. Object-based memory organization. Design considerations. Advantages vs. Disadvantages. Implementation: Linda Implementation: Orca Implementation: Enterprise JavaBeans

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Distributed Shared Memory

Distributed Shared Memory. DSM provides a virtual address space that is shared among all nodes in the distributed system. Programs access DSM just as they do locally. An object/data can be owned by a node in DSM. Initial owner can be the creator of the object/data.

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