CS Parallel Algorithms in Scientific Computing
|
|
- Hillary Henderson
- 5 years ago
- Views:
Transcription
1 CS arallel Algorithms in Scientific Computing arallel Architectures January 2, 2004 Lecture 2 References arallel Computer Architecture: A Hardware / Software Approach Culler, Singh, Gupta, Morgan Kaufmann Introduction to arallel Computing: Design and Analysis of Algorithms Kumar, Grama, Gupta, Karypis, Benjamin Cummings 2
2 erformance goals 3 Microprocessor performance 4 2
3 What is a arallel Computer? Almasi-Gotllib 989: A parallel computer is a "collection of processing elements that communicate and cooperate to solve large problems fast". Why parallel architecture? Add new dimension to design space -- number of processors. In principle, achieve higher performance by using more processors. How much additional performance is gained and at what additional cost depends on several factors. 5 Questions How large is the collection? How powerful are the individual processing elements (pe)? Can the number be increased in a straightforward manner? How do they communicate and cooperate? How is data transmitted between pe's? What interconnection topology? 6 3
4 Taxonomy of arallel Architectures I. By control mechanism - instruction stream and data stream II. III. IV. By process granularity - coarse vs fine grain By address space organization - shared vs distributed memory By interconnection network - dynamic vs static 7 (I) Control Mechanism (Flynn s taxonomy) SISD: Single Instruction stream Single Data stream, e.g. conventional sequential computers. SIMD: Single Instruction stream Multiple Data stream MIMD: Multiple Instruction stream Multiple Data stream MISD: Multiple Instruction stream Single Data stream 8 4
5 SIMD Multiple processing elements are under the supervision of a control unit Thinking Machine CM-2, Masar M-2, Quadrics SIMD extensions are also present in commercial microprocessors (MMX or Katmai in Intel x86, 3DNow in AMD K6 and Athlon, Altivec in Motorola G4) 9 MIMD Each processing elements is capable of executing a different program independent of the other processors Most multiprocessor can be classified in this category) 0 5
6 (II) rocess Granularity Coarse grain: Cray C90, Fujitsu small number of very powerful processors Fine grain: CM-2, Quadrics large number of relatively less powerful processors Medium grain: IBM S2, CM-5 between the two extremes. Commuication cost >> computational cost coarse grain Commuication cost << computational cost fine grain (III) Address Space Organization Single/shared address space Uniform Memory Address:SM (UMA) Non Uniform Memory Address (NUMA) Message passing Distributed memory 2 6
7 Shared Memory SIMD Vector processors Some Cray machines 3 SM Architecture Bus or Crossbar Switch Memory I/O SM uses shared system resources (memory, I/O) that can be accessed equally from all the processors coherence is maintained Expensive to build with many procs. Compaq GS AlphaServers. 4 7
8 NUMA Architecture Memory Memory Memory Memory Bus or Crossbar Switch Shared address space Memory latency varies whether access local or remote memory coherence (ccnuma) is maintained using hardware or software protocol Can afford more procs. than SM. SGI Origin 2000/3000, Sun Ultra HC servers. 5 Message-assing SIMD Cambridge parallel processing Gamma II, Quadrics 6 8
9 Message-assing MIMD Memory Memory Memory Memory Communication network Local address space No issue of cache coherence IBM S 7 Dynamic (IV) Interconnection Networks Switches and communication links. Communication links are connected to one another dynamically by switches. Static oint-to-point communication links. Message-passing computers. 8 9
10 Dynamic Interconnections Crossbar switching : Most expensive and extensive interconnection. 2 M M2 Bus connected : rocessors are connected to memory through a common datapath Multistage interconnection: Butterfly,Omega network, perfect shuffle, etc Butterfly 9 Static Interconnection Completely-connected Star-connected Linear array Mesh: 2D/3D mesh, 2D/3D torus Tree and fat tree network Hypercube network 20 0
11 Characteristics of Static Networks Diameter: maximum distance between any two processors in the network D= complete connection D=N- linear array D=N/2 ring D=2( N -) 2D mesh D=2 ( (N/2)) 2D torus D=log N hypercube 2 Characteristics of Static Networks (cont.) Bisection width: the minimum number of communications links that have to be removed to partition the network in half. Channel rate: peak rate at which a single wire can deliver bits. Channel bandwidth: it is the product of channel rate and channel width. Bisection bandwidth B: it is the product of bisection width and channel bandwidth. 22
12 Linear Array, Ring, Mesh, Torus rocessors are arranged as a d-dimensional grid or torus 23 Tree, Fat-tree Tree network: there is only one path between any pair of processors. Fat tree network: increase the number of communication links close to the root. 24 2
13 Hypercube -D 2-D 3-D 25 Binary Reflected GRAY Code G(i,d) denotes the i-th entry in a sequence of Gray codes of d bits. G(i,d+) is derived from G(i,d) by reflecting the table and prefixing the reflected entry with and the original entry with
14 Example of BRG Code -bit 2-bit 3-bit 8p ring 8p hyper Topology Embedding Mapping a linear array into an hypercube: A linear array (or ring) of 2 d processors can be embedded into a d-dimensional hypercube by mapping processor i onto processor G(i,d) of the hypercube. Mapping a 2 r 2 s mesh on an hypercube: processor(i,j)---> G(i,r) G(j,s) ( denote concatenation). 28 4
15 Trade-off Among Different Networks Network Minimum latency Maximum Bw per roc Wires Switches Example Completely connected Constant Constant O(p*p) - - Crossbar Constant Constant O(p) O(p*p) Cray Bus Constant O(/p) O(p) O(p) SGI Challenge Mesh O(sqrt p) Constant O(p) - Intel ASCI Red Hypercube O(log p) Constant O(p log p) - Sgi Origin Switched O(log p) Constant O(p log p) O(p log p) IBM S-2 29 Beowulf Cluster built with commodity hardware components C hardware (x86,alpha,owerc) Commercial high-speed interconnection (00Base-T, Gigabit Ethernet, Myrinet,SCI) Linux, Free-BSD operating system
16 Clusters of SM The next generation of supercomputers will have thousand of SM nodes connected. Increase the computational power of the single node Keep the number of nodes low New programming approach needed, MI+Threads (OpenM,threads,.) ASCI White, CompaqSC, IBM S
CS 770G - Parallel Algorithms in Scientific Computing Parallel Architectures. May 7, 2001 Lecture 2
CS 770G - arallel Algorithms in Scientific Computing arallel Architectures May 7, 2001 Lecture 2 References arallel Computer Architecture: A Hardware / Software Approach Culler, Singh, Gupta, Morgan Kaufmann
More informationParallel Architectures
Parallel Architectures Part 1: The rise of parallel machines Intel Core i7 4 CPU cores 2 hardware thread per core (8 cores ) Lab Cluster Intel Xeon 4/10/16/18 CPU cores 2 hardware thread per core (8/20/32/36
More informationParallel Architecture. Sathish Vadhiyar
Parallel Architecture Sathish Vadhiyar Motivations of Parallel Computing Faster execution times From days or months to hours or seconds E.g., climate modelling, bioinformatics Large amount of data dictate
More informationCOSC 6374 Parallel Computation. Parallel Computer Architectures
OS 6374 Parallel omputation Parallel omputer Architectures Some slides on network topologies based on a similar presentation by Michael Resch, University of Stuttgart Spring 2010 Flynn s Taxonomy SISD:
More informationCOSC 6374 Parallel Computation. Parallel Computer Architectures
OS 6374 Parallel omputation Parallel omputer Architectures Some slides on network topologies based on a similar presentation by Michael Resch, University of Stuttgart Edgar Gabriel Fall 2015 Flynn s Taxonomy
More informationCME342 - Parallel Methods in Numerical Analysis
CME342 - Parallel Methods in Numerical Analysis Parallel Architectures April 2, 2014 Lecture 2 Announcements 1. Subscribe to the mailing list. Go to lists.stanford.edu and follow directions in 1 st handout
More informationOverview. Processor organizations Types of parallel machines. Real machines
Course Outline Introduction in algorithms and applications Parallel machines and architectures Overview of parallel machines, trends in top-500, clusters, DAS Programming methods, languages, and environments
More informationDr. Joe Zhang PDC-3: Parallel Platforms
CSC630/CSC730: arallel & Distributed Computing arallel Computing latforms Chapter 2 (2.3) 1 Content Communication models of Logical organization (a programmer s view) Control structure Communication model
More informationInterconnection Network. Jinkyu Jeong Computer Systems Laboratory Sungkyunkwan University
Interconnection Network Jinkyu Jeong (jinkyu@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Topics Taxonomy Metric Topologies Characteristics Cost Performance 2 Interconnection
More informationScalability and Classifications
Scalability and Classifications 1 Types of Parallel Computers MIMD and SIMD classifications shared and distributed memory multicomputers distributed shared memory computers 2 Network Topologies static
More informationInterconnection Network
Interconnection Network Jinkyu Jeong (jinkyu@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu SSE3054: Multicore Systems, Spring 2017, Jinkyu Jeong (jinkyu@skku.edu) Topics
More informationAdvanced Parallel Architecture. Annalisa Massini /2017
Advanced Parallel Architecture Annalisa Massini - 2016/2017 References Advanced Computer Architecture and Parallel Processing H. El-Rewini, M. Abd-El-Barr, John Wiley and Sons, 2005 Parallel computing
More informationIntroduction to Parallel and Distributed Systems - INZ0277Wcl 5 ECTS. Teacher: Jan Kwiatkowski, Office 201/15, D-2
Introduction to Parallel and Distributed Systems - INZ0277Wcl 5 ECTS Teacher: Jan Kwiatkowski, Office 201/15, D-2 COMMUNICATION For questions, email to jan.kwiatkowski@pwr.edu.pl with 'Subject=your name.
More informationParallel Systems Prof. James L. Frankel Harvard University. Version of 6:50 PM 4-Dec-2018 Copyright 2018, 2017 James L. Frankel. All rights reserved.
Parallel Systems Prof. James L. Frankel Harvard University Version of 6:50 PM 4-Dec-2018 Copyright 2018, 2017 James L. Frankel. All rights reserved. Architectures SISD (Single Instruction, Single Data)
More informationParallel Programming Platforms
arallel rogramming latforms Ananth Grama Computing Research Institute and Department of Computer Sciences, urdue University ayg@cspurdueedu http://wwwcspurdueedu/people/ayg Reference: Introduction to arallel
More informationComputing architectures Part 2 TMA4280 Introduction to Supercomputing
Computing architectures Part 2 TMA4280 Introduction to Supercomputing NTNU, IMF January 16. 2017 1 Supercomputing What is the motivation for Supercomputing? Solve complex problems fast and accurately:
More informationCS575 Parallel Processing
CS575 Parallel Processing Lecture three: Interconnection Networks Wim Bohm, CSU Except as otherwise noted, the content of this presentation is licensed under the Creative Commons Attribution 2.5 license.
More informationSMD149 - Operating Systems - Multiprocessing
SMD149 - Operating Systems - Multiprocessing Roland Parviainen December 1, 2005 1 / 55 Overview Introduction Multiprocessor systems Multiprocessor, operating system and memory organizations 2 / 55 Introduction
More informationOverview. SMD149 - Operating Systems - Multiprocessing. Multiprocessing architecture. Introduction SISD. Flynn s taxonomy
Overview SMD149 - Operating Systems - Multiprocessing Roland Parviainen Multiprocessor systems Multiprocessor, operating system and memory organizations December 1, 2005 1/55 2/55 Multiprocessor system
More informationCOSC 6385 Computer Architecture - Multi Processor Systems
COSC 6385 Computer Architecture - Multi Processor Systems Fall 2006 Classification of Parallel Architectures Flynn s Taxonomy SISD: Single instruction single data Classical von Neumann architecture SIMD:
More informationChapter 9 Multiprocessors
ECE200 Computer Organization Chapter 9 Multiprocessors David H. lbonesi and the University of Rochester Henk Corporaal, TU Eindhoven, Netherlands Jari Nurmi, Tampere University of Technology, Finland University
More informationSMP and ccnuma Multiprocessor Systems. Sharing of Resources in Parallel and Distributed Computing Systems
Reference Papers on SMP/NUMA Systems: EE 657, Lecture 5 September 14, 2007 SMP and ccnuma Multiprocessor Systems Professor Kai Hwang USC Internet and Grid Computing Laboratory Email: kaihwang@usc.edu [1]
More informationOutline. Distributed Shared Memory. Shared Memory. ECE574 Cluster Computing. Dichotomy of Parallel Computing Platforms (Continued)
Cluster Computing Dichotomy of Parallel Computing Platforms (Continued) Lecturer: Dr Yifeng Zhu Class Review Interconnections Crossbar» Example: myrinet Multistage» Example: Omega network Outline Flynn
More informationPhysical Organization of Parallel Platforms. Alexandre David
Physical Organization of Parallel Platforms Alexandre David 1.2.05 1 Static vs. Dynamic Networks 13-02-2008 Alexandre David, MVP'08 2 Interconnection networks built using links and switches. How to connect:
More informationLecture 2 Parallel Programming Platforms
Lecture 2 Parallel Programming Platforms Flynn s Taxonomy In 1966, Michael Flynn classified systems according to numbers of instruction streams and the number of data stream. Data stream Single Multiple
More informationSHARED MEMORY VS DISTRIBUTED MEMORY
OVERVIEW Important Processor Organizations 3 SHARED MEMORY VS DISTRIBUTED MEMORY Classical parallel algorithms were discussed using the shared memory paradigm. In shared memory parallel platform processors
More informationCSC630/CSC730: Parallel Computing
CSC630/CSC730: Parallel Computing Parallel Computing Platforms Chapter 2 (2.4.1 2.4.4) Dr. Joe Zhang PDC-4: Topology 1 Content Parallel computing platforms Logical organization (a programmer s view) Control
More informationParallel Architectures
Parallel Architectures CPS343 Parallel and High Performance Computing Spring 2018 CPS343 (Parallel and HPC) Parallel Architectures Spring 2018 1 / 36 Outline 1 Parallel Computer Classification Flynn s
More informationComputer and Information Sciences College / Computer Science Department CS 207 D. Computer Architecture. Lecture 9: Multiprocessors
Computer and Information Sciences College / Computer Science Department CS 207 D Computer Architecture Lecture 9: Multiprocessors Challenges of Parallel Processing First challenge is % of program inherently
More informationInterconnection Network
Interconnection Network Recap: Generic Parallel Architecture A generic modern multiprocessor Network Mem Communication assist (CA) $ P Node: processor(s), memory system, plus communication assist Network
More informationComputer parallelism Flynn s categories
04 Multi-processors 04.01-04.02 Taxonomy and communication Parallelism Taxonomy Communication alessandro bogliolo isti information science and technology institute 1/9 Computer parallelism Flynn s categories
More informationCSE Introduction to Parallel Processing. Chapter 4. Models of Parallel Processing
Dr Izadi CSE-4533 Introduction to Parallel Processing Chapter 4 Models of Parallel Processing Elaborate on the taxonomy of parallel processing from chapter Introduce abstract models of shared and distributed
More informationMIMD Overview. Intel Paragon XP/S Overview. XP/S Usage. XP/S Nodes and Interconnection. ! Distributed-memory MIMD multicomputer
MIMD Overview Intel Paragon XP/S Overview! MIMDs in the 1980s and 1990s! Distributed-memory multicomputers! Intel Paragon XP/S! Thinking Machines CM-5! IBM SP2! Distributed-memory multicomputers with hardware
More informationIssues in Multiprocessors
Issues in Multiprocessors Which programming model for interprocessor communication shared memory regular loads & stores SPARCCenter, SGI Challenge, Cray T3D, Convex Exemplar, KSR-1&2, today s CMPs message
More informationCS252 Graduate Computer Architecture Lecture 14. Multiprocessor Networks March 9 th, 2011
CS252 Graduate Computer Architecture Lecture 14 Multiprocessor Networks March 9 th, 2011 John Kubiatowicz Electrical Engineering and Computer Sciences University of California, Berkeley http://www.eecs.berkeley.edu/~kubitron/cs252
More informationWhat is Parallel Computing?
What is Parallel Computing? Parallel Computing is several processing elements working simultaneously to solve a problem faster. 1/33 What is Parallel Computing? Parallel Computing is several processing
More informationMotivation for Parallelism. Motivation for Parallelism. ILP Example: Loop Unrolling. Types of Parallelism
Motivation for Parallelism Motivation for Parallelism The speed of an application is determined by more than just processor speed. speed Disk speed Network speed... Multiprocessors typically improve the
More informationMulti-core Programming - Introduction
Multi-core Programming - Introduction Based on slides from Intel Software College and Multi-Core Programming increasing performance through software multi-threading by Shameem Akhter and Jason Roberts,
More informationThree basic multiprocessing issues
Three basic multiprocessing issues 1. artitioning. The sequential program must be partitioned into subprogram units or tasks. This is done either by the programmer or by the compiler. 2. Scheduling. Associated
More informationParallel Computing Platforms. Jinkyu Jeong Computer Systems Laboratory Sungkyunkwan University
Parallel Computing Platforms Jinkyu Jeong (jinkyu@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu Elements of a Parallel Computer Hardware Multiple processors Multiple
More information4. Networks. in parallel computers. Advances in Computer Architecture
4. Networks in parallel computers Advances in Computer Architecture System architectures for parallel computers Control organization Single Instruction stream Multiple Data stream (SIMD) All processors
More informationMultiprocessors - Flynn s Taxonomy (1966)
Multiprocessors - Flynn s Taxonomy (1966) Single Instruction stream, Single Data stream (SISD) Conventional uniprocessor Although ILP is exploited Single Program Counter -> Single Instruction stream The
More informationTypes of Parallel Computers
slides1-22 Two principal types: Types of Parallel Computers Shared memory multiprocessor Distributed memory multicomputer slides1-23 Shared Memory Multiprocessor Conventional Computer slides1-24 Consists
More informationNon-Uniform Memory Access (NUMA) Architecture and Multicomputers
Non-Uniform Memory Access (NUMA) Architecture and Multicomputers Parallel and Distributed Computing Department of Computer Science and Engineering (DEI) Instituto Superior Técnico February 29, 2016 CPD
More informationParallel Computing Platforms
Parallel Computing Platforms Jinkyu Jeong (jinkyu@skku.edu) Computer Systems Laboratory Sungkyunkwan University http://csl.skku.edu SSE3054: Multicore Systems, Spring 2017, Jinkyu Jeong (jinkyu@skku.edu)
More informationNon-Uniform Memory Access (NUMA) Architecture and Multicomputers
Non-Uniform Memory Access (NUMA) Architecture and Multicomputers Parallel and Distributed Computing Department of Computer Science and Engineering (DEI) Instituto Superior Técnico September 26, 2011 CPD
More informationEE382 Processor Design. Illinois
EE382 Processor Design Winter 1998 Chapter 8 Lectures Multiprocessors Part II EE 382 Processor Design Winter 98/99 Michael Flynn 1 Illinois EE 382 Processor Design Winter 98/99 Michael Flynn 2 1 Write-invalidate
More informationInterconnection networks
Interconnection networks When more than one processor needs to access a memory structure, interconnection networks are needed to route data from processors to memories (concurrent access to a shared memory
More informationParallel Processors. The dream of computer architects since 1950s: replicate processors to add performance vs. design a faster processor
Multiprocessing Parallel Computers Definition: A parallel computer is a collection of processing elements that cooperate and communicate to solve large problems fast. Almasi and Gottlieb, Highly Parallel
More informationIssues in Multiprocessors
Issues in Multiprocessors Which programming model for interprocessor communication shared memory regular loads & stores message passing explicit sends & receives Which execution model control parallel
More informationArchitecture of Large Systems CS-602 Computer Science and Engineering Department National Institute of Technology
Architecture of Large Systems CS-602 Computer Science and Engineering Department National Institute of Technology Instructor: Dr. Lokesh Chouhan Slide Sources: Andrew S. Tanenbaum, Structured Computer
More informationEE 4683/5683: COMPUTER ARCHITECTURE
3/3/205 EE 4683/5683: COMPUTER ARCHITECTURE Lecture 8: Interconnection Networks Avinash Kodi, kodi@ohio.edu Agenda 2 Interconnection Networks Performance Metrics Topology 3/3/205 IN Performance Metrics
More informationBlueGene/L. Computer Science, University of Warwick. Source: IBM
BlueGene/L Source: IBM 1 BlueGene/L networking BlueGene system employs various network types. Central is the torus interconnection network: 3D torus with wrap-around. Each node connects to six neighbours
More informationCCS HPC. Interconnection Network. PC MPP (Massively Parallel Processor) MPP IBM
CCS HC taisuke@cs.tsukuba.ac.jp 1 2 CU memoryi/o 2 2 4single chipmulti-core CU 10 C CM (Massively arallel rocessor) M IBM BlueGene/L 65536 Interconnection Network 3 4 (distributed memory system) (shared
More informationNon-Uniform Memory Access (NUMA) Architecture and Multicomputers
Non-Uniform Memory Access (NUMA) Architecture and Multicomputers Parallel and Distributed Computing MSc in Information Systems and Computer Engineering DEA in Computational Engineering Department of Computer
More informationComputer and Information Sciences College / Computer Science Department CS 207 D. Computer Architecture. Lecture 9: Multiprocessors
Computer and Information Sciences College / Computer Science Department CS 207 D Computer Architecture Lecture 9: Multiprocessors Challenges of Parallel Processing First challenge is % of program inherently
More informationWhat are Clusters? Why Clusters? - a Short History
What are Clusters? Our definition : A parallel machine built of commodity components and running commodity software Cluster consists of nodes with one or more processors (CPUs), memory that is shared by
More informationParallel Computer Architectures. Lectured by: Phạm Trần Vũ Prepared by: Thoại Nam
Parallel Computer Architectures Lectured by: Phạm Trần Vũ Prepared by: Thoại Nam Outline Flynn s Taxonomy Classification of Parallel Computers Based on Architectures Flynn s Taxonomy Based on notions of
More informationInterconnection Networks. Issues for Networks
Interconnection Networks Communications Among Processors Chris Nevison, Colgate University Issues for Networks Total Bandwidth amount of data which can be moved from somewhere to somewhere per unit time
More informationParallel Architectures
Parallel Architectures Instructor: Tsung-Che Chiang tcchiang@ieee.org Department of Science and Information Engineering National Taiwan Normal University Introduction In the roughly three decades between
More informationChapter 1. Introduction: Part I. Jens Saak Scientific Computing II 7/348
Chapter 1 Introduction: Part I Jens Saak Scientific Computing II 7/348 Why Parallel Computing? 1. Problem size exceeds desktop capabilities. Jens Saak Scientific Computing II 8/348 Why Parallel Computing?
More informationCray XE6 Performance Workshop
Cray XE6 erformance Workshop odern HC Architectures David Henty d.henty@epcc.ed.ac.uk ECC, University of Edinburgh Overview Components History Flynn s Taxonomy SID ID Classification via emory Distributed
More informationWHY PARALLEL PROCESSING? (CE-401)
PARALLEL PROCESSING (CE-401) COURSE INFORMATION 2 + 1 credits (60 marks theory, 40 marks lab) Labs introduced for second time in PP history of SSUET Theory marks breakup: Midterm Exam: 15 marks Assignment:
More informationCommunication has significant impact on application performance. Interconnection networks therefore have a vital role in cluster systems.
Cluster Networks Introduction Communication has significant impact on application performance. Interconnection networks therefore have a vital role in cluster systems. As usual, the driver is performance
More informationChapter Seven. Idea: create powerful computers by connecting many smaller ones
Chapter Seven Multiprocessors Idea: create powerful computers by connecting many smaller ones good news: works for timesharing (better than supercomputer) vector processing may be coming back bad news:
More informationPARALLEL COMPUTER ARCHITECTURES
8 ARALLEL COMUTER ARCHITECTURES 1 CU Shared memory (a) (b) Figure 8-1. (a) A multiprocessor with 16 CUs sharing a common memory. (b) An image partitioned into 16 sections, each being analyzed by a different
More informationIntroduction II. Overview
Introduction II Overview Today we will introduce multicore hardware (we will introduce many-core hardware prior to learning OpenCL) We will also consider the relationship between computer hardware and
More informationINTERCONNECTION NETWORKS LECTURE 4
INTERCONNECTION NETWORKS LECTURE 4 DR. SAMMAN H. AMEEN 1 Topology Specifies way switches are wired Affects routing, reliability, throughput, latency, building ease Routing How does a message get from source
More informationDheeraj Bhardwaj May 12, 2003
HPC Systems and Models Dheeraj Bhardwaj Department of Computer Science & Engineering Indian Institute of Technology, Delhi 110 016 India http://www.cse.iitd.ac.in/~dheerajb 1 Sequential Computers Traditional
More informationComputer Architecture
Computer Architecture Chapter 7 Parallel Processing 1 Parallelism Instruction-level parallelism (Ch.6) pipeline superscalar latency issues hazards Processor-level parallelism (Ch.7) array/vector of processors
More informationParallel Architecture, Software And Performance
Parallel Architecture, Software And Performance UCSB CS240A, T. Yang, 2016 Roadmap Parallel architectures for high performance computing Shared memory architecture with cache coherence Performance evaluation
More informationInterconnection Networks
Lecture 17: Interconnection Networks Parallel Computer Architecture and Programming A comment on web site comments It is okay to make a comment on a slide/topic that has already been commented on. In fact
More informationECE 669 Parallel Computer Architecture
ECE 669 arallel Computer Architecture Lecture 2 Architectural erspective Overview Increasingly attractive Economics, technology, architecture, application demand Increasingly central and mainstream arallelism
More informationComputer Systems Architecture
Computer Systems Architecture Lecture 23 Mahadevan Gomathisankaran April 27, 2010 04/27/2010 Lecture 23 CSCE 4610/5610 1 Reminder ABET Feedback: http://www.cse.unt.edu/exitsurvey.cgi?csce+4610+001 Student
More informationLecture notes for CS Chapter 4 11/27/18
Chapter 5: Thread-Level arallelism art 1 Introduction What is a parallel or multiprocessor system? Why parallel architecture? erformance potential Flynn classification Communication models Architectures
More informationMultiprocessors. Flynn Taxonomy. Classifying Multiprocessors. why would you want a multiprocessor? more is better? Cache Cache Cache.
Multiprocessors why would you want a multiprocessor? Multiprocessors and Multithreading more is better? Cache Cache Cache Classifying Multiprocessors Flynn Taxonomy Flynn Taxonomy Interconnection Network
More informationTaxonomy of Parallel Computers, Models for Parallel Computers. Levels of Parallelism
Taxonomy of Parallel Computers, Models for Parallel Computers Reference : C. Xavier and S. S. Iyengar, Introduction to Parallel Algorithms 1 Levels of Parallelism Parallelism can be achieved at different
More informationDesign of Parallel Algorithms. The Architecture of a Parallel Computer
+ Design of Parallel Algorithms The Architecture of a Parallel Computer + Trends in Microprocessor Architectures n Microprocessor clock speeds are no longer increasing and have reached a limit of 3-4 Ghz
More informationComputer Architecture and Organization
10-1 Chapter 10 - Advanced Computer Architecture Computer Architecture and Organization Miles Murdocca and Vincent Heuring Chapter 10 Advanced Computer Architecture 10-2 Chapter 10 - Advanced Computer
More informationEE/CSCI 451: Parallel and Distributed Computation
EE/CSCI 451: Parallel and Distributed Computation Lecture #4 1/24/2018 Xuehai Qian xuehai.qian@usc.edu http://alchem.usc.edu/portal/xuehaiq.html University of Southern California 1 Announcements PA #1
More informationOutline. Parallel Numerical Algorithms. Moore s Law. Limits on Processor Speed. Consequences of Moore s Law. Moore s Law. Consequences of Moore s Law
Outline Parallel Numerical Algorithms Chapter 1 Parallel Computing Prof. Michael T. Heath Department of Computer Science University of Illinois at Urbana-Champaign CS 554 / CSE 51 1 3 4 Concurrency Collective
More informationParallel Computing Platforms
Parallel Computing Platforms Network Topologies John Mellor-Crummey Department of Computer Science Rice University johnmc@rice.edu COMP 422/534 Lecture 14 28 February 2017 Topics for Today Taxonomy Metrics
More informationCS650 Computer Architecture. Lecture 10 Introduction to Multiprocessors and PC Clustering
CS650 Computer Architecture Lecture 10 Introduction to Multiprocessors and PC Clustering Andrew Sohn Computer Science Department New Jersey Institute of Technology Lecture 10: Intro to Multiprocessors/Clustering
More informationProcessor Architecture and Interconnect
Processor Architecture and Interconnect What is Parallelism? Parallel processing is a term used to denote simultaneous computation in CPU for the purpose of measuring its computation speeds. Parallel Processing
More informationFundamentals of. Parallel Computing. Sanjay Razdan. Alpha Science International Ltd. Oxford, U.K.
Fundamentals of Parallel Computing Sanjay Razdan Alpha Science International Ltd. Oxford, U.K. CONTENTS Preface Acknowledgements vii ix 1. Introduction to Parallel Computing 1.1-1.37 1.1 Parallel Computing
More informationParallel Computer Architecture Spring Shared Memory Multiprocessors Memory Coherence
Parallel Computer Architecture Spring 2018 Shared Memory Multiprocessors Memory Coherence Nikos Bellas Computer and Communications Engineering Department University of Thessaly Parallel Computer Architecture
More informationCOMP4300/8300: Overview of Parallel Hardware. Alistair Rendell. COMP4300/8300 Lecture 2-1 Copyright c 2015 The Australian National University
COMP4300/8300: Overview of Parallel Hardware Alistair Rendell COMP4300/8300 Lecture 2-1 Copyright c 2015 The Australian National University 2.1 Lecture Outline Review of Single Processor Design So we talk
More informationChapter 1: Perspectives
Chapter 1: Perspectives Copyright @ 2005-2008 Yan Solihin Copyright notice: No part of this publication may be reproduced, stored in a retrieval system, or transmitted by any means (electronic, mechanical,
More informationInterconnect Technology and Computational Speed
Interconnect Technology and Computational Speed From Chapter 1 of B. Wilkinson et al., PARAL- LEL PROGRAMMING. Techniques and Applications Using Networked Workstations and Parallel Computers, augmented
More informationSerial. Parallel. CIT 668: System Architecture 2/14/2011. Topics. Serial and Parallel Computation. Parallel Computing
CIT 668: System Architecture Parallel Computing Topics 1. What is Parallel Computing? 2. Why use Parallel Computing? 3. Types of Parallelism 4. Amdahl s Law 5. Flynn s Taxonomy of Parallel Computers 6.
More informationLecture 7: Parallel Processing
Lecture 7: Parallel Processing Introduction and motivation Architecture classification Performance evaluation Interconnection network Zebo Peng, IDA, LiTH 1 Performance Improvement Reduction of instruction
More informationChapter 4 Data-Level Parallelism
CS359: Computer Architecture Chapter 4 Data-Level Parallelism Yanyan Shen Department of Computer Science and Engineering Shanghai Jiao Tong University 1 Outline 4.1 Introduction 4.2 Vector Architecture
More informationCOSC 6385 Computer Architecture - Thread Level Parallelism (I)
COSC 6385 Computer Architecture - Thread Level Parallelism (I) Edgar Gabriel Spring 2014 Long-term trend on the number of transistor per integrated circuit Number of transistors double every ~18 month
More informationBlueGene/L (No. 4 in the Latest Top500 List)
BlueGene/L (No. 4 in the Latest Top500 List) first supercomputer in the Blue Gene project architecture. Individual PowerPC 440 processors at 700Mhz Two processors reside in a single chip. Two chips reside
More informationBİL 542 Parallel Computing
BİL 542 Parallel Computing 1 Chapter 1 Parallel Programming 2 Why Use Parallel Computing? Main Reasons: Save time and/or money: In theory, throwing more resources at a task will shorten its time to completion,
More informationComputer Systems Architecture
Computer Systems Architecture Lecture 24 Mahadevan Gomathisankaran April 29, 2010 04/29/2010 Lecture 24 CSCE 4610/5610 1 Reminder ABET Feedback: http://www.cse.unt.edu/exitsurvey.cgi?csce+4610+001 Student
More informationCOMP4300/8300: Overview of Parallel Hardware. Alistair Rendell
COMP4300/8300: Overview of Parallel Hardware Alistair Rendell COMP4300/8300 Lecture 2-1 Copyright c 2015 The Australian National University 2.2 The Performs: Floating point operations (FLOPS) - add, mult,
More informationCS/COE1541: Intro. to Computer Architecture
CS/COE1541: Intro. to Computer Architecture Multiprocessors Sangyeun Cho Computer Science Department Tilera TILE64 IBM BlueGene/L nvidia GPGPU Intel Core 2 Duo 2 Why multiprocessors? For improved latency
More informationModel Questions and Answers on
BIJU PATNAIK UNIVERSITY OF TECHNOLOGY, ODISHA Model Questions and Answers on PARALLEL COMPUTING Prepared by, Dr. Subhendu Kumar Rath, BPUT, Odisha. Model Questions and Answers Subject Parallel Computing
More informationIntroduction to Multiprocessors (Part I) Prof. Cristina Silvano Politecnico di Milano
Introduction to Multiprocessors (Part I) Prof. Cristina Silvano Politecnico di Milano Outline Key issues to design multiprocessors Interconnection network Centralized shared-memory architectures Distributed
More information