Petascale Computing

Petascale Computing

... highresolution) simulations within a scale regime, but they lack the
computational horsepower to simulate accurately across scales. Meeting this
challenge demands petascale computing power. The supercomputing industry is
addressing ...

Author: David A. Bader

Publisher: CRC Press

ISBN: 1584889101

Category: Computers

Page: 616

View: 100

Although the highly anticipated petascale computers of the near future will perform at an order of magnitude faster than today’s quickest supercomputer, the scaling up of algorithms and applications for this class of computers remains a tough challenge. From scalable algorithm design for massive concurrency toperformance analyses and scientific visualization, Petascale Computing: Algorithms and Applications captures the state of the art in high-performance computing algorithms and applications. Featuring contributions from the world’s leading experts in computational science, this edited collection explores the use of petascale computers for solving the most difficult scientific and engineering problems of the current century. Covering a wide range of important topics, the book illustrates how petascale computing can be applied to space and Earth science missions, biological systems, weather prediction, climate science, disasters, black holes, and gamma ray bursts. It details the simulation of multiphysics, cosmological evolution, molecular dynamics, and biomolecules. The book also discusses computational aspects that include the Uintah framework, Enzo code, multithreaded algorithms, petaflops, performance analysis tools, multilevel finite element solvers, finite element code development, Charm++, and the Cactus framework. Supplying petascale tools, programming methodologies, and an eight-page color insert, this volume addresses the challenging problems of developing application codes that can take advantage of the architectural features of the new petascale systems in advance of their first deployment.
Categories: Computers

Eigenvalue Problems Algorithms Software and Applications in Petascale Computing

Eigenvalue Problems  Algorithms  Software and Applications in Petascale Computing

The 1st International Workshop on Eigenvalue Problems: Algorithms, Software
and Applications in Petascale Computing (EPASA2014) was held in Tsukuba,
Ibaraki, Japan on March 7–9, 2014. The 2nd International Workshop EPASA ...

Author: Tetsuya Sakurai

Publisher: Springer

ISBN: 9783319624266

Category: Computers

Page: 313

View: 795

This book provides state-of-the-art and interdisciplinary topics on solving matrix eigenvalue problems, particularly by using recent petascale and upcoming post-petascale supercomputers. It gathers selected topics presented at the International Workshops on Eigenvalue Problems: Algorithms; Software and Applications, in Petascale Computing (EPASA2014 and EPASA2015), which brought together leading researchers working on the numerical solution of matrix eigenvalue problems to discuss and exchange ideas – and in so doing helped to create a community for researchers in eigenvalue problems. The topics presented in the book, including novel numerical algorithms, high-performance implementation techniques, software developments and sample applications, will contribute to various fields that involve solving large-scale eigenvalue problems.
Categories: Computers

Advanced Software Technologies for Post Peta Scale Computing

Advanced Software Technologies for Post Peta Scale Computing

Covering research topics from system software such as programming languages, compilers, runtime systems, operating systems, communication middleware, and large-scale file systems, as well as application development support software and big ...

Author: Mitsuhisa Sato

Publisher: Springer

ISBN: 9789811319242

Category: Computers

Page: 317

View: 602

Covering research topics from system software such as programming languages, compilers, runtime systems, operating systems, communication middleware, and large-scale file systems, as well as application development support software and big-data processing software, this book presents cutting-edge software technologies for extreme scale computing. The findings presented here will provide researchers in these fields with important insights for the further development of exascale computing technologies. This book grew out of the post-peta CREST research project funded by the Japan Science and Technology Agency, the goal of which was to establish software technologies for exploring extreme performance computing beyond petascale computing. The respective were contributed by 14 research teams involved in the project. In addition to advanced technologies for large-scale numerical computation, the project addressed the technologies required for big data and graph processing, the complexity of memory hierarchy, and the power problem. Mapping the direction of future high-performance computing was also a central priority.
Categories: Computers

Hart s E P

Hart s E P

It's also important to work with the other businesses and organizations that will
influence success in the new world Hyper - threading of multicore and petascale
computing . How are the developers of off - the - shelf Multi Processor software ...

Author:

Publisher:

ISBN: STANFORD:36105115008257

Category: Gas industry

Page:

View: 566

Categories: Gas industry

Petascale Computing Enabling Technologies Project Final Report

Petascale Computing Enabling Technologies Project Final Report

In this work, we developed a new model that led to a highly efficient algorithm for detecting deadlock during dynamic software testing. This work was the subject of a well-received paper at ICS 2009 [4].

Author:

Publisher:

ISBN: OCLC:727239988

Category:

Page: 5

View: 586

The Petascale Computing Enabling Technologies (PCET) project addressed challenges arising from current trends in computer architecture that will lead to large-scale systems with many more nodes, each of which uses multicore chips. These factors will soon lead to systems that have over one million processors. Also, the use of multicore chips will lead to less memory and less memory bandwidth per core. We need fundamentally new algorithmic approaches to cope with these memory constraints and the huge number of processors. Further, correct, efficient code development is difficult even with the number of processors in current systems; more processors will only make it harder. The goal of PCET was to overcome these challenges by developing the computer science and mathematical underpinnings needed to realize the full potential of our future large-scale systems. Our research results will significantly increase the scientific output obtained from LLNL large-scale computing resources by improving application scientist productivity and system utilization. Our successes include scalable mathematical algorithms that adapt to these emerging architecture trends and through code correctness and performance methodologies that automate critical aspects of application development as well as the foundations for application-level fault tolerance techniques. PCET's scope encompassed several research thrusts in computer science and mathematics: code correctness and performance methodologies, scalable mathematics algorithms appropriate for multicore systems, and application-level fault tolerance techniques. Due to funding limitations, we focused primarily on the first three thrusts although our work also lays the foundation for the needed advances in fault tolerance. In the area of scalable mathematics algorithms, our preliminary work established that OpenMP performance of the AMG linear solver benchmark and important individual kernels on Atlas did not match the predictions of our simple initial model. Our investigations demonstrated that a poor default memory allocation mechanism degraded performance. We developed a prototype NUMA library to provide generic mechanisms to overcome these issues, resulting in significantly improved OpenMP performance. After additional testing, we will make this library available to all users, providing a simple means to improve threading on LLNL's production Linux platforms. We also made progress on developing new scalable algorithms that target multicore nodes. We designed and implemented a new AMG interpolation operator with improved convergence properties for very low complexity coarsening schemes. This implementation will also soon be available to LLNL's application teams as part of the hypre library. We presented results for both topics in an invited plenary talk entitled 'Efficient Sparse Linear Solvers for Multi-Core Architectures' at the 2009 HPCMP Institutes Annual Meeting/CREATE Annual All-Hands Meeting. The interpolation work was summarized in a talk entitled 'Improving Interpolation for Aggressive Coarsening' at the 14th Copper Mountain Conference on Multigrid Methods and in a research paper that will appear in Numerical Linear Algebra with Applications. In the area of code correctness, we significantly extended our behavior equivalence class identification mechanism. Specifically, we not only demonstrated it works well at very large scales but we also added the ability to classify MPI tasks not only by function call traces, but also by specific call sites (source code line numbers) being executed by tasks. More importantly, we developed a new technique to determine relative logical execution progress of tasks in the equivalence classes by combining static analysis with our original dynamic approach. We applied this technique to a correctness issue that arose at 4096 tasks during the development of the new AMG interpolation operator discussed above. This scale isat the limit of effectiveness of production tools, but our technique quickly located the erroneous source code, demonstrating the power of understanding relationships between behavioral equivalence classes. This work is the subject of a paper recently accepted to SC09, as well as a presentation entitled 'Providing Order to Extreme Scale Debugging Chaos' given at the ParaDyn Week annual conference in College Park, MD. In addition to this theoretical extension, we have made significant progress in developing a front end for this tool set, and the front-end is now available on several of LLNL's largescale computing resources. In addition, we explored mechanisms to identify exact locations of erroneous MPI usage in application source code. In this work, we developed a new model that led to a highly efficient algorithm for detecting deadlock during dynamic software testing. This work was the subject of a well-received paper at ICS 2009 [4].
Categories:

Game Face

Game Face

Es sei an der Zeit , nicht mehr auf Innovationen aus dem Transistoren - Design zu
setzen , erklärte Alan Gara vom IBM Watson Research Center in seinem Vortrag
über die derzeitige Cutting Edge Thematik „ Petascale Computing during ...

Author:

Publisher:

ISBN: STANFORD:36105121693712

Category: Computer games

Page:

View: 806

Categories: Computer games

SciDAC 2007

SciDAC 2007

A year ago I stood before you to share the legacy of the first SciDAC program and
identify the challenges that we must address on the road to petascale computing
— a road E E Cummins described as ' ... never traveled , gladly beyond any ...

Author:

Publisher:

ISBN: CORNELL:31924105393684

Category: Science

Page:

View: 362

Categories: Science

Performance Refactoring of Instrumentation Measurement and Analysis Technologies for Petascale Computing

Performance Refactoring of Instrumentation  Measurement  and Analysis Technologies for Petascale Computing

It also produced two performance systems with an increasing degree of functional overlap. While each tool has its specific analysis focus, the tools were implementing measurement infrastructures that were substantially similar.

Author:

Publisher:

ISBN: OCLC:953403806

Category:

Page:

View: 410

The growing number of cores provided by today's high-end computing systems present substantial challenges to application developers in their pursuit of parallel efficiency. To find the most effective optimization strategy, application developers need insight into the runtime behavior of their code. The University of Oregon (UO) and the Juelich Supercomputing Centre of Forschungszentrum Juelich (FZJ) develop the performance analysis tools TAU and Scalasca, respectively, which allow high-performance computing (HPC) users to collect and analyze relevant performance data - even at very large scales. TAU and Scalasca are considered among the most advanced parallel performance systems available, and are used extensively across HPC centers in the U.S., Germany, and around the world. The TAU and Scalasca groups share a heritage of parallel performance tool research and partnership throughout the past fifteen years. Indeed, the close interactions of the two groups resulted in a cross-fertilization of tool ideas and technologies that pushed TAU and Scalasca to what they are today. It also produced two performance systems with an increasing degree of functional overlap. While each tool has its specific analysis focus, the tools were implementing measurement infrastructures that were substantially similar. Because each tool provides complementary performance analysis, sharing of measurement results is valuable to provide the user with more facets to understand performance behavior. However, each measurement system was producing performance data in different formats, requiring data interoperability tools to be created. A common measurement and instrumentation system was needed to more closely integrate TAU and Scalasca and to avoid the duplication of development and maintenance effort. The PRIMA (Performance Refactoring of Instrumentation, Measurement, and Analysis) project was proposed over three years ago as a joint international effort between UO and FZJ to accomplish these objectives: (1) refactor TAU and Scalasca performance system components for core code sharing and (2) integrate TAU and Scalasca functionality through data interfaces, formats, and utilities. As presented in this report, the project has completed these goals. In addition to shared technical advances, the groups have worked to engage with users through application performance engineering and tools training. In this regard, the project benefits from the close interactions the teams have with national laboratories in the United States and Germany. We have also sought to enhance our interactions through joint tutorials and outreach. UO has become a member of the Virtual Institute of High-Productivity Supercomputing (VI-HPS) established by the Helmholtz Association of German Research Centres as a center of excellence, focusing on HPC tools for diagnosing programming errors and optimizing performance. UO and FZJ have conducted several VI-HPS training activities together within the past three years.
Categories:

Contemporary High Performance Computing

Contemporary High Performance Computing

With contributions from top researchers directly involved in designing, deploying, and using these supercomputing systems, this book captures a global picture of the state of the art in HPC.

Author: Jeffrey S. Vetter

Publisher: CRC Press

ISBN: 9781466568358

Category: Computers

Page: 730

View: 860

Contemporary High Performance Computing: From Petascale toward Exascale focuses on the ecosystems surrounding the world’s leading centers for high performance computing (HPC). It covers many of the important factors involved in each ecosystem: computer architectures, software, applications, facilities, and sponsors. The first part of the book examines significant trends in HPC systems, including computer architectures, applications, performance, and software. It discusses the growth from terascale to petascale computing and the influence of the TOP500 and Green500 lists. The second part of the book provides a comprehensive overview of 18 HPC ecosystems from around the world. Each chapter in this section describes programmatic motivation for HPC and their important applications; a flagship HPC system overview covering computer architecture, system software, programming systems, storage, visualization, and analytics support; and an overview of their data center/facility. The last part of the book addresses the role of clouds and grids in HPC, including chapters on the Magellan, FutureGrid, and LLGrid projects. With contributions from top researchers directly involved in designing, deploying, and using these supercomputing systems, this book captures a global picture of the state of the art in HPC.
Categories: Computers

Contemporary High Performance Computing

Contemporary High Performance Computing

Features: Describes many prominent, international systems in HPC from 2015 through 2017 including each system’s hardware and software architecture Covers facilities for each system including power and cooling Presents application ...

Author: Jeffrey S. Vetter

Publisher: CRC Press

ISBN: 9781351036856

Category: Computers

Page: 454

View: 515

Contemporary High Performance Computing: From Petascale toward Exascale, Volume 3 focuses on the ecosystems surrounding the world’s leading centers for high performance computing (HPC). It covers many of the important factors involved in each ecosystem: computer architectures, software, applications, facilities, and sponsors. This third volume will be a continuation of the two previous volumes, and will include other HPC ecosystems using the same chapter outline: description of a flagship system, major application workloads, facilities, and sponsors. Features: Describes many prominent, international systems in HPC from 2015 through 2017 including each system’s hardware and software architecture Covers facilities for each system including power and cooling Presents application workloads for each site Discusses historic and projected trends in technology and applications Includes contributions from leading experts Designed for researchers and students in high performance computing, computational science, and related areas, this book provides a valuable guide to the state-of-the art research, trends, and resources in the world of HPC.
Categories: Computers

Science Technology Review

Science   Technology Review

... occurred in more than 5 million node-hours of computation with the pF3D code,
which simulates laser— plasma interactions such as the one shown here. they
may occur on any of hundreds of thousands of processors in a petascale system.

Author:

Publisher:

ISBN: UCBK:C110668884

Category: Military research

Page:

View: 382

Categories: Military research

AIChE Symposium Series

AIChE Symposium Series

To realize these opportunities , however , it is critical that the federal agencies
that fund molecular and computational ... system software , and mathematical
libraries necessary to fully capitalize on terascale and petascale computing ( For
a ...

Author: American Institute of Chemical Engineers

Publisher:

ISBN: UOM:39015047814820

Category: Chemical engineering

Page: 328

View: 329

Categories: Chemical engineering

Foundations of Molecular Modeling and Simulation

Foundations of Molecular Modeling and Simulation

To realize these opportunities , however , it is critical that the federal agencies
that fund molecular and computational ... system software , and mathematical
libraries necessary to fully capitalize on terascale and petascale computing ( For
a ...

Author: Peter T. Cummings

Publisher: Amer Inst of Chemical Engineers

ISBN: STANFORD:36105025291803

Category: Science

Page: 328

View: 577

Categories: Science

Annual Highlights

Annual Highlights

10000 1000 Compute Power ( millions of particles ) 100 Jaguar ( Cray XT3 )
Phoenia ( Cry X1E ) Earth Simulator 105 ) Blue Genal ... This system is on the
path to achieve petascale performance by 2008 , and GTC is among the few
scientific ...

Author: Princeton University. Plasma Physics Laboratory

Publisher:

ISBN: CORNELL:31924099680302

Category: Controlled fusion

Page:

View: 515

Categories: Controlled fusion

Advanced Software Technologies for Post Peta Scale Computing

Advanced Software Technologies for Post Peta Scale Computing

Covering research topics from system software such as programming languages, compilers, runtime systems, operating systems, communication middleware, and large-scale file systems, as well as application development support software and big ...

Author: Mitsuhisa Sato

Publisher:

ISBN: 9811319251

Category: Computer software

Page:

View: 777

Covering research topics from system software such as programming languages, compilers, runtime systems, operating systems, communication middleware, and large-scale file systems, as well as application development support software and big-data processing software, this book presents cutting-edge software technologies for extreme scale computing. The findings presented here will provide researchers in these fields with important insights for the further development of exascale computing technologies. This book grew out of the post-peta CREST research project funded by the Japan Science and Technology Agency, the goal of which was to establish software technologies for exploring extreme performance computing beyond petascale computing. The respective were contributed by 14 research teams involved in the project. In addition to advanced technologies for large-scale numerical computation, the project addressed the technologies required for big data and graph processing, the complexity of memory hierarchy, and the power problem. Mapping the direction of future high-performance computing was also a central priority.
Categories: Computer software

Simulating Solidification in Metals at High Pressure

Simulating Solidification in Metals at High Pressure

We investigate solidification in metal systems ranging in size from 64,000 to 524,288,000 atoms on the IBM BlueGene/L computer at LLNL.

Author: M. Patel

Publisher:

ISBN: OCLC:316307952

Category:

Page: 16

View: 459

We investigate solidification in metal systems ranging in size from 64,000 to 524,288,000 atoms on the IBM BlueGene/L computer at LLNL. Using the newly developed ddcMD code, we achieve performance rates as high as 103 TFlops, with a performance of 101.7 TFlop sustained over a 7 hour run on 131,072 cpus. We demonstrate superb strong and weak scaling. Our calculations are significant as they represent the first atomic-scale model of metal solidification to proceed, without finite size effects, from spontaneous nucleation and growth of solid out of the liquid, through the coalescence phase, and into the onset of coarsening. Thus, our simulations represent the first step towards an atomistic model of nucleation and growth that can directly link atomistic to mesoscopic length scales.
Categories:

Computational Methods in Science and Engineering

Computational Methods in Science and Engineering

Theory and Computation: Old Problems and New Challenges Volume 1 George
Maroulis, Theodore E. Simos ... In summary , for high - speed MPI
communications on petascale computing systems , both hardware and software
are considered ...

Author: George Maroulis

Publisher: American Inst. of Physics

ISBN: 0735404771

Category: Science

Page: 678

View: 903

All papers have been peer-reviewed. The aim of ICCMSE 2007 is to bring together computational scientists and engineers from several disciplines in order to share methods, methodologies and ideas. The potential readers of these proceedings are all the scientists with interest in the following fields: Computational Mathematics, Theoretical Physics, Computational Physics, Theoretical Chemistry, Computational Chemistry, Mathematical Chemistry, Computational Engineering, Computational Mechanics, Computational Biology and Medicine, Scientific Computation, High Performance Computing, Parallel and Distributed Computing, Visualization, Problem Solving Environments, Software Tools, Advanced Numerical Algorithms, Modeling and Simulation of Complex Systems, Web-based Simulation and Computing, Grid-based Simulation and Computing, Computational Grids, and Computer Science.
Categories: Science

New Scientist

New Scientist

... class leadership in terascale and petascale computing . Classified Computing (
for national security and and ORNL is in search of world - class scientific and tech
energy assurance ) nical staff for high performance computing opportunities .

Author:

Publisher:

ISBN: CHI:81565193

Category: Science

Page:

View: 331

Categories: Science

Foundational Tools for Petascale Computing

Foundational Tools for Petascale Computing

The overall goal for this work is to address the steady increase in complexity of these petascale systems. Our work covers two key areas: (1) The analysis, instrumentation and control of binary programs.

Author:

Publisher:

ISBN: OCLC:1066536922

Category:

Page: 13

View: 144

The Paradyn project has a history of developing algorithms, techniques, and software that push the cutting edge of tool technology for high-end computing systems. Under this funding, we are working on a three-year agenda to make substantial new advances in support of new and emerging Petascale systems. The overall goal for this work is to address the steady increase in complexity of these petascale systems. Our work covers two key areas: (1) The analysis, instrumentation and control of binary programs. Work in this area falls under the general framework of the Dyninst API tool kits. (2) Infrastructure for building tools and applications at extreme scale. Work in this area falls under the general framework of the MRNet scalability framework. Note that work done under this funding is closely related to work done under a contemporaneous grant, ?High-Performance Energy Applications and Systems?, SC0004061/FG02-10ER25972, UW PRJ36WV.
Categories: