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Leading Computational Methods on Scalar and Vector HEC Platforms

L. Oliker, J. Carter, M. Wehner, A. Canning, S. Ethier, A. Mirin, D. Parks, P. Worley, S. Kitawaki, Y. Tsuda
ACM/IEEE SC 2005 Conference (SC'05)  
The last decade has witnessed a rapid proliferation of superscalar cache-based microprocessors to build high-end computing (HEC) platforms, primarily because of their generality, scalability, and cost  ...  However, the growing gap between sustained and peak performance for full-scale scientific applications on conventional supercomputers has become a major concern in high per-  ...  The authors thank Shoaib Kamil and David Skinner for their assistance in generating the topology graphs, and Richard Gerber for help in porting PARATEC to the Opteron system.  ... 
doi:10.1109/sc.2005.41 dblp:conf/sc/OlikerCWCEMPWKT05 fatcat:cvjc2rgqknalxgzezggcdhvmgy

Scientific Application Performance on Candidate PetaScale Platforms

Leonid Oliker, Andrew Canning, Jonathan Carter, Costin Iancu, Michael Lijewski, Shoaib Kamil, John Shalf, Hongzhang Shan, Erich Strohmaier, Stephane Ethier, Tom Goodale
2007 2007 IEEE International Parallel and Distributed Processing Symposium  
on BG/L, as well as improved X1E vectorization.  ...  This work represents one of the most comprehensive performance evaluation studies to date on modern HEC systems, including the IBM Power5, AMD Opteron, IBM BG/L, and Cray X1E.  ...  Acknowledgments The authors would like to gratefully thank Bob Walkup for optimizing GTC on the BG/L as well as Tom Spelce and Bronis de Supinksi of LLNL for conducting the Purple experiments.  ... 
doi:10.1109/ipdps.2007.370259 dblp:conf/ipps/OlikerCCILKSSSEG07 fatcat:2qwlvhvrwrbf7mhguaqs2jx64i

Performance Characteristics of Potential Petascale Scientific Applications [chapter]

Andrew Canning, John Shalf, Shoaib Kamil, Jonathan Carter, Michael Lijewski, Stéphane Ethier, Leonid Oliker
2007 Chapman & Hall/CRC Computational Science  
Acknowledgments The authors would like to gratefully thank Bob Walkup for optimizing GTC on the BG/L as well as Tom Spelce and Bronis de Supinksi of LLNL for conducting the Purple experiments.  ...  All LBNL authors were supported by the Office of Advanced Scientific Computing Research in the Department of Energy Office of Science under contract number DE-AC02-05CH11231. Dr.  ...  Future work will explore a wider set of computational methods, with a focus on irregular and unstructured algorithms, while investigating a broader set of HEC platforms, including the latest generation  ... 
doi:10.1201/9781584889106.ch1 fatcat:nr6pf2sblfe45gqusgarx4clv4

Performance characteristics of an adaptive mesh refinement calculation on scalar and vector platforms

Michael Welcome, Charles Rendleman, Leonid Oliker, Rupak Biswas
2006 Proceedings of the 3rd conference on Computing frontiers - CF '06  
It is therefore imperative to understand the tradeoffs between conventional scalar and parallel-vector platforms for solving AMR-based calculations.  ...  Despite this complexity, it is generally believed that future multi-scale applications will increasingly rely on adaptive methods to study problems at unprecedented scale and resolution.  ...  CONCLUSIONS In this work, we described a detailed performance analysis of the HyperCLaw AMR framework on leading scalar and vector platforms: the IBM Power3 and Power5, SGI Altix, and Cray X1E.  ... 
doi:10.1145/1128022.1128074 dblp:conf/cf/WelcomeROB06 fatcat:dnqc6i2scvczhccgmudyhv7qiu

Aspects of Hyperelliptic Curves over Large Prime Fields in Software Implementations [chapter]

Roberto Maria Avanzi
2004 Lecture Notes in Computer Science  
For groups of 192 and 256 bits the difference is about 14% and 15% respectively.  ...  We present an implementation of elliptic curves and of hyperelliptic curves of genus 2 and 3 over prime fields.  ...  The author acknowledges feedback, support and material from Christophe Doche, Pierrick Gaudry, Johnny Großschädl, Christof Paar, Jean-Jacques Quisquater, Jan Pelzl, Nicolas Thériault and Thomas Wollinger  ... 
doi:10.1007/978-3-540-28632-5_11 fatcat:sscr6puzmreqvgkhm66izdmnwa

Hybrid expansion–contraction: a robust scaleable method for approximating theH∞norm

Tim Mitchell, Michael L. Overton
2015 IMA Journal of Numerical Analysis  
Overton, Fast approximation of the H∞ norm via optimization over spectral value sets, SIAM Journal on Matrix Analysis and Applications 34:709-737, 2013], which occasionally breaks down far from a stationary  ...  Gürbüzbalaban, and M.L.  ...  up to a scalar and hence generally do not converge.  ... 
doi:10.1093/imanum/drv046 fatcat:2fpoqpjhcjbmtodm2ao7qjjwhq

A numerical strategy to combine high-order schemes, complex geometry and parallel computing for high resolution DNS of fractal generated turbulence

S. Laizet, E. Lamballais, J.C. Vassilicos
2010 Computers & Fluids  
An innovative approach which combines high order schemes and a dual domain decomposition method is presented in this paper and is applied to DNS of multiscale-generated turbulent flows by a fractal grid  ...  Impressive advances in parallel platform architectures over the past decade have made Direct Numerical Simulation (DNS) a powerful tool which can provide full access to the spatial structure of turbulent  ...  Acknowledgements Calculations were carried out in the United Kingdom, France and Spain on 4 different platforms.  ... 
doi:10.1016/j.compfluid.2009.09.018 fatcat:vh722ih5mbfsxggwp6sfllnonq

Nested algorithms for optimal reservoir operation and their embedding in a decision support platform [article]

Blagoj Delipetrev
2016 arXiv   pre-print
This is a PhD thesis of Blagoj Delipetrev explaining nested dynamic programming, nested stochastic dynamic programming and nested reinforcement learning algorithms that are applied in reservoir optimization  ...  I appreciate all his contributions of time and patience, and I thank him for making my PhD experience productive and stimulating.  ...  We had long discussions about many topics, including science, economics, and politics.  ... 
arXiv:1611.02308v1 fatcat:p53kemdpunaw7kjbqr3tptunlq

Fusion of fixation and odometry for vehicle navigation

A. Adam, E. Rivlin, H. Rotstein
1999 IEEE transactions on systems, man and cybernetics. Part A. Systems and humans  
The simplification comes from the fact that only one point needs to be tracked as opposed to multiple points in other methods.  ...  This is a major improvement over previous methods which assume that the coordinates of the landmark are known, since any point of the observed scene can be selected as a landmark, and not just pre-measured  ...  More recently, cameras mounted on a computer controlled variable pan-tilt platform have become "off-the-shelf" and can be mounted on an AGV for performing a variety of tasks, not necessarily connected  ... 
doi:10.1109/3468.798063 fatcat:ieesqj45mjcqfbjidjikkzg6xu

Cantor versus Harley: optimization and analysis of explicit formulae for hyperelliptic curve cryptosystems

T. Wollinger, J. Pelzl, C. Paar
2005 IEEE transactions on computers  
In addition, we introduce a general reduction method for polynomials according to Karatsuba. We implemented our most efficient group operations on Pentium and ARM microprocessors.  ...  However, the group operation has been believed to be too complex and thus, HEC have not been used in this context so far.  ...  One can most probably improve the given group operations further, by finding new improved methods or by restructuring the operations and using the methods given.  ... 
doi:10.1109/tc.2005.109 fatcat:nwxfbah7dbfy7hutxx3sutz4wq

Parallel Programmability and the Chapel Language

B.L. Chamberlain, D. Callahan, H.P. Zima
2007 The international journal of high performance computing applications  
Thanks also to Robert Bocchino, Paul Cassella, and Greg Titus for reading and providing valuable feedback on drafts of this article.  ...  language and its ongoing implementation.  ...  size is, or whether the processor is a vector or scalar processor.  ... 
doi:10.1177/1094342007078442 fatcat:uvgfhdkzwfd6nd3tnajicopl4e

Sparse Matrix-Vector Multiplication on GPGPUs

Salvatore Filippone, Valeria Cardellini, Davide Barbieri, Alessandro Fanfarillo
2017 ACM Transactions on Mathematical Software  
The multiplication of a sparse matrix by a dense vector (SpMV) is a centerpiece of scientific computing applications: it is the essential kernel for the solution of sparse linear systems and sparse eigenvalue  ...  problems by iterative methods.  ...  John Linford of Paratools Inc. and Dr. Pasqua D'Ambra of CNR Italy, for their help in getting access to some of the test platforms. We also acknowledge Dr.  ... 
doi:10.1145/3017994 fatcat:sfupstohpbfyhihqbk6lkjbwyq

HPC Challenge: Design, History, and Implementation Highlights [chapter]

Jack Dongarra, Piotr Luszczek
2017 Contemporary High Performance Computing  
The computation is peformed simultaneously on each computing element on its local data set. Data Size a, b, and c are m-element double precision vectors.  ...  It stressed the productivity aspect of programming languages and HEC architectures. Usually more than one winner is awarded.  ... 
doi:10.1201/9781351104005-2 fatcat:esi673s33nbo5oezzglvp3ctnq

A Lightweight Post-Quantum Lattice-Based RSA for Secure Communications

Iqra Mustafa, Imranullah Khan, Sheraz Aslam, Ahthasham Sajid, Syed Muhammad Mohsin, Muhammad Awais, Muhammad Bilal Qureshi
2020 IEEE Access  
and intractable for classical computers.  ...  The computer experts and professionals have been devising to develop quantum computers.  ...  SINGULAR VALUE DECOMPOSITION As the product of two vectors is either a scalar or a vector. If we calculate the normed vector, we get a scalar value.  ... 
doi:10.1109/access.2020.2995801 fatcat:72iwjov2hjdwtnsrhfdparwbtu

Interoperability and computational framework for simulating open channel hydraulics: application to sensitivity analysis and calibration of Gironde Estuary model [article]

Cedric Goeury, Yoann Audouin, Fabrice Zaoui
2021 arXiv   pre-print
Progress in physical process knowledge, numerical methods and computational power, allows us to address hydro-environmental problems of growing complexity.  ...  Water resource management is of crucial societal and economic importance, requiring a strong capacity for anticipating environmental change.  ...  on OpenTURNS and all of the EDF R&D OpenTURNS team.  ... 
arXiv:2012.09112v2 fatcat:izs2ilcnuzcqbk6tnifnsdjfju
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