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Vector Vs. Scalar Processors: a Performance Comparison Using a Set of Computational Science Benchmarks
Vector vs. Scalar Processors: A Performance Comparison Using a Set of Computational Science Benchmarks Mike Ashworth, Ian J. Bush and Martyn F. Guest, Computational Science & Engineering Department, CCLRC Daresbury Laboratory ABSTRACT: Despite a significant decline in their popularity in the last decade vector processors are still with us, and manufacturers such as Cray and NEC are bringing new products to market. We have carried out a performance comparison of three full-scale applications, the first, SBLI, a Direct Numerical Simulation code from Computational Fluid Dynamics, the second, DL_POLY, a molecular dynamics code and the third, POLCOMS, a coastal-ocean model. Comparing the performance of the Cray X1 vector system with two massively parallel (MPP) micro-processor-based systems we find three rather different results. The SBLI PCHAN benchmark performs excellently on the Cray X1 with no code modification, showing 100% vectorisation and significantly outperforming the MPP systems. The performance of DL_POLY was initially poor, but we were able to make significant improvements through a few simple optimisations. The POLCOMS code has been substantially restructured for cache-based MPP systems and now does not vectorise at all well on the Cray X1 leading to poor performance. We conclude that both vector and MPP systems can deliver high performance levels but that, depending on the algorithm, careful software design may be necessary if the same code is to achieve high performance on different architectures. KEYWORDS: vector processor, scalar processor, benchmarking, parallel computing, CFD, molecular dynamics, coastal ocean modelling All of the key computational science groups in the 1. Introduction UK made use of vector supercomputers during their halcyon days of the 1970s, 1980s and into the early 1990s Vector computers entered the scene at a very early [1]-[3]. -
UNICOS® Installation Guide for CRAY J90lm Series SG-5271 9.0.2
UNICOS® Installation Guide for CRAY J90lM Series SG-5271 9.0.2 / ' Cray Research, Inc. Copyright © 1996 Cray Research, Inc. All Rights Reserved. This manual or parts thereof may not be reproduced in any form unless permitted by contract or by written permission of Cray Research, Inc. Portions of this product may still be in development. The existence of those portions still in development is not a commitment of actual release or support by Cray Research, Inc. Cray Research, Inc. assumes no liability for any damages resulting from attempts to use any functionality or documentation not officially released and supported. If it is released, the final form and the time of official release and start of support is at the discretion of Cray Research, Inc. Autotasking, CF77, CRAY, Cray Ada, CRAYY-MP, CRAY-1, HSX, SSD, UniChem, UNICOS, and X-MP EA are federally registered trademarks and CCI, CF90, CFr, CFr2, CFT77, COS, Cray Animation Theater, CRAY C90, CRAY C90D, Cray C++ Compiling System, CrayDoc, CRAY EL, CRAY J90, Cray NQS, CraylREELlibrarian, CraySoft, CRAY T90, CRAY T3D, CrayTutor, CRAY X-MP, CRAY XMS, CRAY-2, CRInform, CRIlThrboKiva, CSIM, CVT, Delivering the power ..., DGauss, Docview, EMDS, HEXAR, lOS, LibSci, MPP Apprentice, ND Series Network Disk Array, Network Queuing Environment, Network Queuing '!boIs, OLNET, RQS, SEGLDR, SMARTE, SUPERCLUSTER, SUPERLINK, Trusted UNICOS, and UNICOS MAX are trademarks of Cray Research, Inc. Anaconda is a trademark of Archive Technology, Inc. EMASS and ER90 are trademarks of EMASS, Inc. EXABYTE is a trademark of EXABYTE Corporation. GL and OpenGL are trademarks of Silicon Graphics, Inc. -
Through the Years… When Did It All Begin?
& Through the years… When did it all begin? 1974? 1978? 1963? 2 CDC 6600 – 1974 NERSC started service with the first Supercomputer… ● A well-used system - Serial Number 1 ● On its last legs… ● Designed and built in Chippewa Falls ● Launch Date: 1963 ● Load / Store Architecture ● First RISC Computer! ● First CRT Monitor ● Freon Cooled ● State-of-the-Art Remote Access at NERSC ● Via 4 acoustic modems, manually answered capable of 10 characters /sec 3 50th Anniversary of the IBM / Cray Rivalry… Last week, CDC had a press conference during which they officially announced their 6600 system. I understand that in the laboratory developing this system there are only 32 people, “including the janitor”… Contrasting this modest effort with our vast development activities, I fail to understand why we have lost our industry leadership position by letting someone else offer the world’s most powerful computer… T.J. Watson, August 28, 1963 4 2/6/14 Cray Higher-Ed Roundtable, July 22, 2013 CDC 7600 – 1975 ● Delivered in September ● 36 Mflop Peak ● ~10 Mflop Sustained ● 10X sustained performance vs. the CDC 6600 ● Fast memory + slower core memory ● Freon cooled (again) Major Innovations § 65KW Memory § 36.4 MHz clock § Pipelined functional units 5 Cray-1 – 1978 NERSC transitions users ● Serial 6 to vector architectures ● An fairly easy transition for application writers ● LTSS was converted to run on the Cray-1 and became known as CTSS (Cray Time Sharing System) ● Freon Cooled (again) ● 2nd Cray 1 added in 1981 Major Innovations § Vector Processing § Dependency -
NQE Release Overview RO–5237 3.3
NQE Release Overview RO–5237 3.3 Document Number 007–3795–001 Copyright © 1998 Silicon Graphics, Inc. and Cray Research, Inc. All Rights Reserved. This manual or parts thereof may not be reproduced in any form unless permitted by contract or by written permission of Silicon Graphics, Inc. or Cray Research, Inc. RESTRICTED RIGHTS LEGEND Use, duplication, or disclosure of the technical data contained in this document by the Government is subject to restrictions as set forth in subdivision (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 52.227-7013 and/or in similar or successor clauses in the FAR, or in the DOD or NASA FAR Supplement. Unpublished rights reserved under the Copyright Laws of the United States. Contractor/manufacturer is Silicon Graphics, Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94043-1389. Autotasking, CF77, CRAY, Cray Ada, CraySoft, CRAY Y-MP, CRAY-1, CRInform, CRI/TurboKiva, HSX, LibSci, MPP Apprentice, SSD, SUPERCLUSTER, UNICOS, and X-MP EA are federally registered trademarks and Because no workstation is an island, CCI, CCMT, CF90, CFT, CFT2, CFT77, ConCurrent Maintenance Tools, COS, Cray Animation Theater, CRAY APP, CRAY C90, CRAY C90D, Cray C++ Compiling System, CrayDoc, CRAY EL, CRAY J90, CRAY J90se, CrayLink, Cray NQS, Cray/REELlibrarian, CRAY S-MP, CRAY SSD-T90, CRAY T90, CRAY T3D, CRAY T3E, CrayTutor, CRAY X-MP, CRAY XMS, CRAY-2, CSIM, CVT, Delivering the power . ., DGauss, Docview, EMDS, GigaRing, HEXAR, IOS, ND Series Network Disk Array, Network Queuing Environment, Network Queuing Tools, OLNET, RQS, SEGLDR, SMARTE, SUPERLINK, System Maintenance and Remote Testing Environment, Trusted UNICOS, UNICOS MAX, and UNICOS/mk are trademarks of Cray Research, Inc. -
Unix and Linux System Administration and Shell Programming
Unix and Linux System Administration and Shell Programming Unix and Linux System Administration and Shell Programming version 56 of August 12, 2014 Copyright © 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2012, 2013, 2014 Milo This book includes material from the http://www.osdata.com/ website and the text book on computer programming. Distributed on the honor system. Print and read free for personal, non-profit, and/or educational purposes. If you like the book, you are encouraged to send a donation (U.S dollars) to Milo, PO Box 5237, Balboa Island, California, USA 92662. This is a work in progress. For the most up to date version, visit the website http://www.osdata.com/ and http://www.osdata.com/programming/shell/unixbook.pdf — Please add links from your website or Facebook page. Professors and Teachers: Feel free to take a copy of this PDF and make it available to your class (possibly through your academic website). This way everyone in your class will have the same copy (with the same page numbers) despite my continual updates. Please try to avoid posting it to the public internet (to avoid old copies confusing things) and take it down when the class ends. You can post the same or a newer version for each succeeding class. Please remove old copies after the class ends to prevent confusing the search engines. You can contact me with a specific version number and class end date and I will put it on my website. version 56 page 1 Unix and Linux System Administration and Shell Programming Unix and Linux Administration and Shell Programming chapter 0 This book looks at Unix (and Linux) shell programming and system administration. -
Cray Research Software Report
Cray Research Software Report Irene M. Qualters, Cray Research, Inc., 655F Lone Oak Drive, Eagan, Minnesota 55121 ABSTRACT: This paper describes the Cray Research Software Division status as of Spring 1995 and gives directions for future hardware and software architectures. 1 Introduction single CPU speedups that can be anticipated based on code per- formance on CRAY C90 systems: This report covers recent Supercomputer experiences with Cray Research products and lays out architectural directions for CRAY C90 Speed Speedup on CRAY T90s the future. It summarizes early customer experience with the latest CRAY T90 and CRAY J90 systems, outlines directions Under 100 MFLOPS 1.4x over the next five years, and gives specific plans for ‘95 deliv- 200 to 400 MFLOPS 1.6x eries. Over 600 MFLOPS 1.75x The price/performance of CRAY T90 systems shows sub- 2 Customer Status stantial improvements. For example, LINPACK CRAY T90 price/performance is 3.7 times better than on CRAY C90 sys- Cray Research enjoyed record volumes in 1994, expanding tems. its installed base by 20% to more than 600 systems. To accom- plish this, we shipped 40% more systems than in 1993 (our pre- CRAY T94 single CPU ratios to vious record year). This trend will continue, with similar CRAY C90 speeds: percentage increases in 1995, as we expand into new applica- tion areas, including finance, multimedia, and “real time.” • LINPACK 1000 x 1000 -> 1.75x In the face of this volume, software reliability metrics show • NAS Parallel Benchmarks (Class A) -> 1.48 to 1.67x consistent improvements. While total incoming problem re- • Perfect Benchmarks -> 1.3 to 1.7x ports showed a modest decrease in 1994, our focus on MTTI (mean time to interrupt) for our largest systems yielded a dou- bling in reliability by year end. -
The Gemini Network
The Gemini Network Rev 1.1 Cray Inc. © 2010 Cray Inc. All Rights Reserved. Unpublished Proprietary Information. This unpublished work is protected by trade secret, copyright and other laws. Except as permitted by contract or express written permission of Cray Inc., no part of this work or its content may be used, reproduced or disclosed in any form. Technical Data acquired by or for the U.S. Government, if any, is provided with Limited Rights. Use, duplication or disclosure by the U.S. Government is subject to the restrictions described in FAR 48 CFR 52.227-14 or DFARS 48 CFR 252.227-7013, as applicable. Autotasking, Cray, Cray Channels, Cray Y-MP, UNICOS and UNICOS/mk are federally registered trademarks and Active Manager, CCI, CCMT, CF77, CF90, CFT, CFT2, CFT77, ConCurrent Maintenance Tools, COS, Cray Ada, Cray Animation Theater, Cray APP, Cray Apprentice2, Cray C90, Cray C90D, Cray C++ Compiling System, Cray CF90, Cray EL, Cray Fortran Compiler, Cray J90, Cray J90se, Cray J916, Cray J932, Cray MTA, Cray MTA-2, Cray MTX, Cray NQS, Cray Research, Cray SeaStar, Cray SeaStar2, Cray SeaStar2+, Cray SHMEM, Cray S-MP, Cray SSD-T90, Cray SuperCluster, Cray SV1, Cray SV1ex, Cray SX-5, Cray SX-6, Cray T90, Cray T916, Cray T932, Cray T3D, Cray T3D MC, Cray T3D MCA, Cray T3D SC, Cray T3E, Cray Threadstorm, Cray UNICOS, Cray X1, Cray X1E, Cray X2, Cray XD1, Cray X-MP, Cray XMS, Cray XMT, Cray XR1, Cray XT, Cray XT3, Cray XT4, Cray XT5, Cray XT5h, Cray Y-MP EL, Cray-1, Cray-2, Cray-3, CrayDoc, CrayLink, Cray-MP, CrayPacs, CrayPat, CrayPort, Cray/REELlibrarian, CraySoft, CrayTutor, CRInform, CRI/TurboKiva, CSIM, CVT, Delivering the power…, Dgauss, Docview, EMDS, GigaRing, HEXAR, HSX, IOS, ISP/Superlink, LibSci, MPP Apprentice, ND Series Network Disk Array, Network Queuing Environment, Network Queuing Tools, OLNET, RapidArray, RQS, SEGLDR, SMARTE, SSD, SUPERLINK, System Maintenance and Remote Testing Environment, Trusted UNICOS, TurboKiva, UNICOS MAX, UNICOS/lc, and UNICOS/mp are trademarks of Cray Inc. -
Forschungszentrum Jülich Gmbh High Speed Supercomputer Communications in Broadband Networks FZJ-ZAM-IB-9903
Forschungszentrum Jülich GmbH Zentralinstitut für Angewandte Mathematik D-52425 Jülich, Tel. (02461) 61-6402 Interner Bericht High Speed Supercomputer Communications in Broadband Networks Helmut Grund*, Ferdinand Hommes*, Ralph Niederberger, Eva Pless* FZJ-ZAM-IB-9903 April 1999 (letzte Änderung: 20.04.99) (*) GMD – German National Research Center for Information Technology, Schloss Birlinghoven Preprint: To be published in: Proceedings of the TERENA-NORDUnet Networking Conference 1999 7-10 June 1999, Lund, Sweden II High Speed Supercomputer Communications in Broadband Networks Helmut Grund2, Ferdinand Hommes2 , Ralph Niederberger1, Eva Pless2 1 FZJ - Research Centre Jülich D - 52425 Jülich http://www.fz-juelich.de [email protected] 2 GMD – German National Research Center for Information Technology Schloss Birlinghoven, D-53754 Sankt Augustin http://www.gmd.de [email protected] , [email protected] , [email protected] Abstract High speed communication across wide area networks is currently of great interest in computer com- munications industry. It is needed wherever a huge amount of data will be created and made available to remote computer systems. Areas of investigation in computer science are the coupling of super- computers (metacomputing), high-resolution visualisation of data and distributed access to huge amounts of data. Within the Gigabit Testbed West (GTB-West) a high speed communication link has been installed between the research center Forschungszentrum Jülich GmbH (FZJ) and the National Research Center for Information (GMD) at Sankt Augustin. Amongst the research fields Metacomputing, Visualization and distributed usage of huge amount of data the installation, management and performance evaluation of the data communication links are main points of interest to the GTBW project. -
TMA4280—Introduction to Supercomputing
Supercomputing TMA4280—Introduction to Supercomputing NTNU, IMF January 12. 2018 1 Outline Context: Challenges in Computational Science and Engineering Examples: Simulation of turbulent flows and other applications Goal and means: parallel performance improvement Overview of supercomputing systems Conclusion 2 Computational Science and Engineering (CSE) What is the motivation for Supercomputing? Solve complex problems fast and accurately: — efforts in modelling and simulation push sciences and engineering applications forward, — computational requirements drive the development of new hardware and software. 3 Computational Science and Engineering (CSE) Development of computational methods for scientific research and innovation in engineering and technology. Covers the entire spectrum of natural sciences, mathematics, informatics: — Scientific model (Physics, Biology, Medical, . ) — Mathematical model — Numerical model — Implementation — Visualization, Post-processing — Validation ! Feedback: virtuous circle Allows for larger and more realistic problems to be simulated, new theories to be experimented numerically. 4 Outcome in Industrial Applications Figure: 2004: “The Falcon 7X becomes the first aircraft in industry history to be entirely developed in a virtual environment, from design to manufacturing to maintenance.” Dassault Systèmes 5 Evolution of computational power Figure: Moore’s Law: exponential increase of number of transistors per chip, 1-year rate (1965), 2-year rate (1975). WikiMedia, CC-BY-SA-3.0 6 Evolution of computational power -
System Programmer Reference (Cray SV1™ Series)
® System Programmer Reference (Cray SV1™ Series) 108-0245-003 Cray Proprietary (c) Cray Inc. All Rights Reserved. Unpublished Proprietary Information. This unpublished work is protected by trade secret, copyright, and other laws. Except as permitted by contract or express written permission of Cray Inc., no part of this work or its content may be used, reproduced, or disclosed in any form. U.S. GOVERNMENT RESTRICTED RIGHTS NOTICE: The Computer Software is delivered as "Commercial Computer Software" as defined in DFARS 48 CFR 252.227-7014. All Computer Software and Computer Software Documentation acquired by or for the U.S. Government is provided with Restricted Rights. Use, duplication or disclosure by the U.S. Government is subject to the restrictions described in FAR 48 CFR 52.227-14 or DFARS 48 CFR 252.227-7014, as applicable. Technical Data acquired by or for the U.S. Government, if any, is provided with Limited Rights. Use, duplication or disclosure by the U.S. Government is subject to the restrictions described in FAR 48 CFR 52.227-14 or DFARS 48 CFR 252.227-7013, as applicable. Autotasking, CF77, Cray, Cray Ada, Cray Channels, Cray Chips, CraySoft, Cray Y-MP, Cray-1, CRInform, CRI/TurboKiva, HSX, LibSci, MPP Apprentice, SSD, SuperCluster, UNICOS, UNICOS/mk, and X-MP EA are federally registered trademarks and Because no workstation is an island, CCI, CCMT, CF90, CFT, CFT2, CFT77, ConCurrent Maintenance Tools, COS, Cray Animation Theater, Cray APP, Cray C90, Cray C90D, Cray CF90, Cray C++ Compiling System, CrayDoc, Cray EL, CrayLink, -
Cray X1 System, Site Planning
Cray X1 System, Site Planning Jim Tennessen and Bob Hoehn, Cray Inc. ABSTRACT: The Cray X1 air cooled (AC) and liquid cooled (LC) systems site preparation requirements are less complex and extensive than previous Cray products. This paper provides a system overview and information about site access, power wiring, system cooling, water piping, floor preparation, and environmental requirements as well as some system comparisons. System Cooling 1. System Overview The Cray X1 AC mainframe rejects 100% of its heat to The Cray X1 AC and LC systems consist of four major air, so no water piping is required. A typical system rejects components: the mainframe chassis, the IO cabinet, PC-20 about 85 kBTUs (7 tons) per hour. The Cray X1 LC cabinets, and the Cray workstation (CWS). The mainframe mainframe is water cooled; the other system components houses the node modules—each containing four CPUs and (IO, PC-20s) are air cooled. A typical Cray X1 64-CPU LC memory—and router modules. The IO houses the IO system rejects about 48 kbtus/hr (4 tons) to air. channel adaptor components and the PC-20s house the Cray programming environment server and the Cray network Water Piping server as well as disk controllers and disk drives. The The Cray X1 mainframe utilizes a unique spray- mainframe connects to the IO cabinet via an overhead evaporative cooling system to cool the CPU portions of the trough to minimize cable lengths. node board and air cooling to cool the memory and router components within the chassis. Two water-cooled heat Site Access exchangers cool the heated air returning from the air-cooled The Cray X1 AC mainframe is shipped on a pallet that components and this air recirculates through the cabinet in a is very similar to those used for the Cray J90/SV1 products. -
Cray Supercomputers Past, Present, and Future
Cray Supercomputers Past, Present, and Future Hewdy Pena Mercedes, Ryan Toukatly Advanced Comp. Arch. 0306-722 November 2011 Cray Companies z Cray Research, Inc. (CRI) 1972. Seymour Cray. z Cray Computer Corporation (CCC) 1989. Spin-off. Bankrupt in 1995. z Cray Research, Inc. bought by Silicon Graphics, Inc (SGI) in 1996. z Cray Inc. Formed when Tera Computer Company (pioneer in multi-threading technology) bought Cray Research, Inc. in 2000 from SGI. Seymour Cray z Joined Engineering Research Associates (ERA) in 1950 and helped create the ERA 1103 (1953), also known as UNIVAC 1103. z Joined the Control Data Corporation (CDC) in 1960 and collaborated in the design of the CDC 6600 and 7600. z Formed Cray Research Inc. in 1972 when CDC ran into financial difficulties. z First product was the Cray-1 supercomputer z Faster than all other computers at the time. z The first system was sold within a month for US$8.8 million. z Not the first system to use a vector processor but was the first to operate on data on a register instead of memory Vector Processor z CPU that implements an instruction set that operates on one- dimensional arrays of data called vectors. z Appeared in the 1970s, formed the basis of most supercomputers through the 80s and 90s. z In the 60s the Solomon project of Westinghouse wanted to increase math performance by using a large number of simple math co- processors under the control of a single master CPU. z The University of Illinois used the principle on the ILLIAC IV.