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Proceedings of scala 2015: 6th workshop on latest advances in scalable algorithms for large-scale systems - Held in conjunction with SC 2015: the International Conference for High Performance Computing, Networking, Storage and Analysis

Proceedings of ScalA 2015: 6th Workshop on Latest Advances i...

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6th workshop on latest advances in scalable algorithms for large-scale systems, scala 2015

ISBN: (纸本)9781450340113

the proceedings contain 6 papers. the topics discussed include: tuning stationary iterative solvers for fault resilience;a scalable randomized least squares solver for dense over-determined systems;mixed-precision block gram Schmidt orthogonalization;a parallel ensemble kalman filter implementation based on modified;weighted dynamic scheduling with many parallelism grains for offloading of numerical workloads to multiple varied accelerators;and on efficient Monte Carlo preconditioners and hybrid Monte Carlo methods.

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Proceedings of scala 2021: 12th workshop on latest advances in scalable algorithms for large-scale systems, Held in conjunction with SC 2021: the International Conference for High Performance Computing, Networking, Storage and Analysis

Proceedings of ScalA 2021: 12th Workshop on Latest Advances ...

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12th workshop on latest advances in scalable algorithms for large-scale systems, scala 2021

ISBN: (纸本)9781665411288

the proceedings contain 6 papers. the topics discussed include: iterative methods with mixed-precision preconditioning for ill-conditioned linear systems in multiphase CFD simulations;optimized cascadic multigrid Parareal method for explicit time-marching schemes;unleashing the performance of bmSparse for the sparse matrix multiplication in GPUs;passel: improved scalability and efficiency of distributed SVM using a cacheless PGAS migrating thread architecture;batched sparse iterative solvers for computational chemistry simulations on GPUs;and usability of Markov chain Monte Carlo preconditioners in practical problems.

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Proceedings of scala 2014: 5th workshop on latest advances in scalable algorithms for large-scale systems - held in conjunction with SC 2014: the International Conference for High Performance Computing, Networking, Storage and Analysis

Proceedings of ScalA 2014: 5th Workshop on Latest Advances i...

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5th workshop on latest advances in scalable algorithms for large-scale systems, scala 2014

ISBN: (纸本)9781479975624

the proceedings contain 10 papers. the topics discussed include: scaling parallel 3-D FFT with non-blocking MPI collectives;exploiting data representation for fault tolerance;VCube: a provably scalable distributed diagnosis algorithm;TX: algorithmic energy saving for distributed dense matrix factorizations;CholeskyQR2: a simple and communication-avoiding algorithm for computing a tall-skinny qr factorization on a large-scale parallel system;deflation strategies to improve the convergence of communication-avoiding GMRES;a framework for parallel genetic algorithms for distributed memory architectures;the anatomy of Mr. Scan: a dissection of performance of an extreme scale GPU-based clustering algorithm;performance and portability with OpenCL for throughput-oriented HPC workloads across accelerators, coprocessors, and multicore processors;and a hierarchical tridiagonal system solver for heterogenous supercomputers.

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A scalable randomized least squares solver for dense overdetermined systems 6

A scalable randomized least squares solver for dense overdet...

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6th workshop on latest advances in scalable algorithms for large-scale systems, scala 2015

作者： Iyer, Chander Avron, Haim Kollias, Georgios Ineichen, Yves Carothers, Christopher Drineas, Petros Department of Computer Science Rensselaer Polytechnic Institute United States Department of Applied Mathematics Tel Aviv University Israel IBM Research - T. J. Watson Research Center United States IBM Research - Zurich Research Lab Switzerland

ISBN: (纸本)9781450340113

We present a fast randomized least-squares solver for distributedmemory platforms. Our solver is based on the Blendenpik algorithm, but employs a batchwise randomized unitary transformation scheme. the batchwise transformation enables our algorithm to scale the distributed memory vanilla implementation of Blendenpik by up to×3 and provides up to×7.5 speedup over a state-of-the-art scalable least-squares solver based on the classic QR based algorithm. Experimental evaluations on terabyte scale matrices demonstrate excellent speedups on up to 16384 cores on a Blue Gene/Q supercomputer. © 2015 ACM.

关键词： Supercomputers

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workshop overview

Proceedings of ScalA 2015: 6th Workshop on Latest Advances i...

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Proceedings of scala 2015: 6th workshop on latest advances in scalable algorithms for large-scale systems - Held in conjunction with SC 2015: the International Conference for High Performance Computing, Networking, Storage and Analysis 2015年

作者： Alexandrov, Vassil Geist, Al Engelmann, Jack Dongarra Christian

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