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Why is MPI so slow?

Conference Paper published 2017 in Proceedings of the International Conference for High Performance Computing, Networking, Storage and Analysis on - SC '17

Research funded by Advanced Scientific Computing Research

Authors: Ken Raffenetti, Michael Blocksome, Min Si, Sangmin Seo, Akhil Langer, Gengbin Zheng, Masamichi Takagi, Paul Coffman, Jithin Jose, Sayantan Sur, Alexander Sannikov, Abdelhalim Amer, Sergey Oblomov, Michael Chuvelev, Masayuki Hatanaka, Xin Zhao, Paul Fischer, Thilina Rathnayake, Matt Otten, Misun Min, Pavan Balaji, Lena Oden, Charles Archer, Wesley Bland, Hajime Fujita, Yanfei Guo, Tomislav Janjusic, Dmitry Durnov

Symmetric tilt boundaries in body-centered cubic tantalum

Journal Article published Apr 2016 in Scripta Materialia volume 116 on pages 108 to 111

Research funded by UC Research Laboratories (09-LR-06-118456-MEYM) | National Nuclear Security Administration (DE-NA0002080) | Advanced Scientific Computing Research

Authors: Eric N. Hahn, Saryu J. Fensin, Timothy C. Germann, Marc A. Meyers

Classification of hydrological parameter sensitivity and evaluation of parameter transferability across 431 US MOPEX basins

Journal Article published May 2016 in Journal of Hydrology volume 536 on pages 92 to 108

Research funded by Biological and Environmental Research | Advanced Scientific Computing Research

Authors: Huiying Ren, Zhangshuan Hou, Maoyi Huang, Jie Bao, Yu Sun, Teklu Tesfa, L. Ruby Leung

A parallel and adaptive hybridized discontinuous Galerkin method for anisotropic nonhomogeneous diffusion

Journal Article published Jun 2016 in Computer Methods in Applied Mechanics and Engineering volume 304 on pages 118 to 139

Research funded by Advanced Scientific Computing Research (DE-SC0009286) | National Science Foundation (ACI-1339801) | XSEDE (TG-DMS080016N)

Authors: Ali Samii, Craig Michoski, Clint Dawson

Optimization-based mesh correction with volume and convexity constraints

Journal Article published May 2016 in Journal of Computational Physics volume 313 on pages 455 to 477

Research funded by Advanced Scientific Computing Research (14-017511) | Los Alamos National Laboratory (DE-AC52-06NA25396) | National Nuclear Security Administration

Authors: Marta D'Elia, Denis Ridzal, Kara J. Peterson, Pavel Bochev, Mikhail Shashkov

Gaussian process surrogates for failure detection: A Bayesian experimental design approach

Journal Article published May 2016 in Journal of Computational Physics volume 313 on pages 247 to 259

Research funded by National Natural Science Foundation of China (11301337) | U.S. Department of Energy | Office of Science | Advanced Scientific Computing Research | Applied Mathematics program | National Science Foundation (DMS-1115887)

Authors: Hongqiao Wang, Guang Lin, Jinglai Li

Domain decomposition approaches for accelerating contour integration eigenvalue solvers for symmetric eigenvalue problems

Journal Article published 19 Feb 2018 in Numerical Linear Algebra with Applications volume 25 issue 5 on page e2154

Research funded by National Science Foundation (CCF-1505970, CCF-1510010) | Advanced Computing (SciDAC) | U.S. Department of Energy | Office of Science | Advanced Scientific Computing Research | Basic Energy Sciences (DE-SC0008877) | Gerondelis Foundation Fellowship

Authors: Vassilis Kalantzis, James Kestyn, Eric Polizzi, Yousef Saad

Lubricated immersed boundary method in two dimensions

Journal Article published Mar 2018 in Journal of Computational Physics volume 356 on pages 319 to 339

Research funded by National Science Foundation (DMS-1502851) | Advanced Scientific Computing Research (DE-AC02-05CH11231)

Authors: Thomas G. Fai, Chris H. Rycroft

A discrete divergence free weak Galerkin finite element method for the Stokes equations

Journal Article published Mar 2018 in Applied Numerical Mathematics volume 125 on pages 172 to 182

Research funded by Advanced Scientific Computing Research (ERKJE45) | Oak Ridge National Laboratory | U.S. Department of Energy (DE-AC05-00OR22725) | National Science Foundation (DMS-1620016)

Authors: Lin Mu, Junping Wang, Xiu Ye, Shangyou Zhang

Second-order accurate finite volume schemes with the discrete maximum principle for solving Richards’ equation on unstructured meshes

Journal Article published Jun 2017 in Advances in Water Resources volume 104 on pages 114 to 126

Research funded by National Nuclear Security Administration (DE-AC52-06NA25396) | Advanced Scientific Computing Research | Next Generation Ecosystem Experiment (NGEE-Arctic) project | Biological and Environmental Research

Authors: D. Svyatskiy, K. Lipnikov