'Sequential consistency' diaporamas de présentation

Shared Memory Consistency Models: A Tutorial

1.17k views • 105 slides

Joseph Gonzalez Joint work with

991 views • 87 slides

Prof John D. Kubiatowicz cs.berkeley/~kubitron/cs252

770 views • 69 slides

ECE/CS 757: Advanced Computer Architecture II

ECE/CS 757: Advanced Computer Architecture II. Instructor:Mikko H Lipasti Spring 2013 University of Wisconsin-Madison

754 views • 64 slides

Consistency and Replication

Consistency and Replication. Why replication?. Performance Distributing the access demand to multiple near-by replicas improves performance Reliability Multiple copies provide better protection against corrupted or unavailable data replicas. Data-Centric Consistency Models.

783 views • 45 slides

SMP Systems

SMP Systems. MIMD. Shared Memory. UMA. NUMA. ccNUMA. nccNUMA. COMA. Uniform Memory Architectures (UMA). UMA or Symmetric Multiprocessors (SMP) are shared memory systems with the following characteristics global physical address space

633 views • 42 slides

Relaxed Consistency Models

Relaxed Consistency Models. Outline. Lazy Release Consistency TreadMarks DSM system. Review: what makes a good consistency model?. Model is a contract between memory system and programmer Programmer follows some rules about reads and writes Model provides guarantees

509 views • 37 slides

CS4961 Parallel Programming Lecture 19: Message Passing, cont. Mary Hall November 4, 2010

CS4961 Parallel Programming Lecture 19: Message Passing, cont. Mary Hall November 4, 2010. Programming Assignment #3: Simple CUDA Due Thursday, November 18, 11:59 PM.

540 views • 32 slides

Tutorial 4 - Shared Memory Consistency -

Tutorial 4 - Shared Memory Consistency -. Bogdan Simion. Assignment 1. Should determine threshold experimentally Part of the tool, not found through separate experiments and hard-coded into your program To find CPU frequency, use something like k-best measurement scheme from lecture slides

432 views • 28 slides

Snoop-based multiprocessor design

More Architectural Support for MIMD. Snoop-based multiprocessor design. Correctness issues semantic model: coherence and memory consistency dead-lock, live-lock, and starvation Design issues simplistic-to-realistic one-by-one: Single-level cache and an atomic bus

468 views • 26 slides

Memory Consistency & Cache Coherence

MIMD/SPMD ORGANIZATIONS: THREAD-LEVEL PARALLELISM. Memory Consistency & Cache Coherence. Textbook: Sections 5.1-5.4, 7.1-7.3 Semantics of the shared memory model Sequential consistency (SC) Conditions for maintaining SC Cache coherence (CC) Conditions for maintaining CC

400 views • 25 slides

Written By: Adi Omari (Revised and corrected in 2012 by others)

Memory models CDP 236370 - Tutorial 7. Written By: Adi Omari (Revised and corrected in 2012 by others). Tutorial Outline. Coherence Sequential consistency Causal consistency Release consistency (if time allows). Coherence - Reminder.

339 views • 25 slides

The C++11 Memory Model

873 views • 21 slides

Computer Science 425 Distributed Systems

Computer Science 425 Distributed Systems. Lecture 24 Replication Control II Reading: Section 15.4. Basic Mode of Replication. server. Front End. Client. RM. Replication Transparency User need not know that multiple physical copies of data exist. Replication Consistency

360 views • 21 slides

Shared Memory Consistency Models: A Tutorial

Shared Memory Consistency Models: A Tutorial. Authors: Sarita V. Adve Kourosh Gharachorloo. Overview. Memory Consistency Model Implicit Memory Model -- Sequential Consistency Relaxed Memory Model (system-centric) Relaxed models (program-centric). Memory Consistency Model.

511 views • 20 slides

Are We Trading Consistency Too Easily? A Case for Sequential Consistency

Madan Musuvathi Microsoft Research . Dan Marino Todd Millstein. Abhay Singh Satish Narayanasamy. UCLA. University of Michigan. Are We Trading Consistency Too Easily? A Case for Sequential Consistency. Memory Consistency Model. Abstracts the program runtime (compiler + hardware)

407 views • 19 slides

Lecture 11: Consistency Models

Lecture 11: Consistency Models. Topics: sequential consistency, hw and hw/sw optimizations. Coherence Vs. Consistency. Recall that coherence guarantees (i) that a write will eventually be seen by other processors, and (ii) write

888 views • 18 slides

391 views • 18 slides

Lecture 5 Approaches to Concurrency: The Multiprocessor

221 views • 12 slides

236 views • 10 slides