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We report on the design, implementation, optimization, and performance of the CADISHI software package, which calculates histograms of pair-distances of ensembles of particles on CPUs and GPUs. These histograms represent 2-point spatial…

计算物理 · 物理学 2019-02-20 Klaus Reuter , Jürgen Köfinger

Direct numerical simulation (DNS) for gas-solid flow is implemented on a multi-scale supercomputing system, Mole-8.5, featuring massive parallel GPU-CPU hybrid computing, for which the lattice Boltzmann method (LBM) is deployed together…

流体动力学 · 物理学 2010-11-15 Qingang Xiong , Guofeng Zhou , Bo Li , Ji Xua , Xiaojian Fang , Junwu Wang , Xianfeng He , Xiaowei Wang , Limin Wang , Wei Ge , Jinghai Li

We examine the problem of optimizing classification tree evaluation for on-line and real-time applications by using GPUs. Looking at trees with continuous attributes often used in image segmentation, we first put the existing algorithms for…

分布式、并行与集群计算 · 计算机科学 2011-11-08 Jason Spencer

In recent years, it has become increasingly common for high performance computers (HPC) to possess some level of heterogeneous architecture - typically in the form of GPU accelerators. In some machines these are isolated within a dedicated…

分布式、并行与集群计算 · 计算机科学 2022-10-19 I. Zacharoudiou , J. W. S. McCullough , P. V. Coveney

In the paper we discuss the main features of the software package for numerical simulations of the surface water dynamics. We consider an approximation of the shallow water equations together with the parallel technologies for NVIDIA CUDA…

计算工程、金融与科学 · 计算机科学 2017-05-03 Tatyana Dyakonova , Alexander Khoperskov , Sergey Khrapov

Smoothed Particle Hydrodynamics (SPH) is essential for modeling complex large-deformation problems across various applications, requiring significant computational power. A major portion of SPH computation time is dedicated to the Nearest…

分布式、并行与集群计算 · 计算机科学 2024-01-23 Zirui Mao , Xinyi Li , Shenyang Hu , Ganesh Gopalakrishnan , Ang Li

We propose a new hybrid topology optimization algorithm based on multigrid approach that combines the parallelization strategy of CPU using OpenMP and heavily multithreading capabilities of modern Graphics Processing Units (GPU). In…

分布式、并行与集群计算 · 计算机科学 2022-02-01 Arya Prakash Padhi , Souvik Chakraborty , Anupam Chakrabarti , Rajib Chowdhury

Current supercomputers often have a heterogeneous architecture using both CPUs and GPUs. At the same time, numerical simulation tasks frequently involve multiphysics scenarios whose components run on different hardware due to multiple…

计算工程、金融与科学 · 计算机科学 2024-12-10 Samuel Kemmler , Christoph Rettinger , Ulrich Rüde , Pablo Cuéllar , Harald Köstler

GPUs are playing an increasingly important role in general-purpose computing. Many algorithms require synchronizations at different levels of granularity in a single GPU. Additionally, the emergence of dense GPU nodes also calls for…

分布式、并行与集群计算 · 计算机科学 2020-04-14 Lingqi Zhang , Mohamed Wahib , Haoyu Zhang , Satoshi Matsuoka

The Kokkos based library Cabana, which has been developed in the Co-design Center for Particle Applications (CoPA), is used for the implementation of Multi-Particle Collision Dynamics (MPCD), a particle-based description of hydrodynamic…

分布式、并行与集群计算 · 计算机科学 2023-04-28 Rene Halver , Christoph Junghans , Godehard Sutmann

A high-performance implementation of a multiphase lattice Boltzmann method based on the conservative Allen-Cahn model supporting high-density ratios and high Reynolds numbers is presented. Metaprogramming techniques are used to generate…

流体动力学 · 物理学 2020-12-14 Markus Holzer , Martin Bauer , Ulrich Rüde

Eulerian nonlinear uncertainty propagation methods often suffer from finite domain limitations and computational inefficiencies. A recent approach to this class of algorithm, Grid-based Bayesian Estimation Exploiting Sparsity, addresses the…

混沌动力学 · 物理学 2025-08-20 Benjamin L. Hanson , Carlos Rubio , Adrián García-Gutiérrez , Thomas Bewley

As deep neural networks (DNNs) become deeper, the training time increases. In this perspective, multi-GPU parallel computing has become a key tool in accelerating the training of DNNs. In this paper, we introduce a novel methodology to…

数值分析 · 数学 2024-07-08 Chang-Ock Lee , Youngkyu Lee , Jongho Park

This paper explores practical aspects of using a high-level functional language for GPU-based arithmetic on ``midsize'' integers. By this we mean integers of up to about a quarter million bits, which is sufficient for most practical…

分布式、并行与集群计算 · 计算机科学 2024-05-24 Cosmin E. Oancea , Stephen M. Watt

The study deals with the parallelization of 2D and 3D finite element based Navier-Stokes codes using direct solvers. Development of sparse direct solvers using multifrontal solvers has significantly reduced the computational time of direct…

数学软件 · 计算机科学 2009-10-13 Mandhapati P. Raju

As fusion energy devices advance, plasma simulations are crucial for reactor design. Our work extends BIT1 hybrid parallelization by integrating MPI with OpenMP and OpenACC, focusing on asynchronous multi-GPU programming. Results show…

The recent trend of using Graphics Processing Units (GPU's) for high performance computations is driven by the high ratio of price performance for these units, complemented by their cost effectiveness. At first glance, computational fluid…

计算工程、金融与科学 · 计算机科学 2018-02-13 Kiril S. Shterev

CUDA is one of the most popular choices for GPU programming, but it can only be executed on NVIDIA GPUs. Executing CUDA on non-NVIDIA devices not only benefits the hardware community, but also allows data-parallel computation in…

分布式、并行与集群计算 · 计算机科学 2022-06-17 Ruobing Han , Jun Chen , Bhanu Garg , Jeffrey Young , Jaewoong Sim , Hyesoon Kim

We present results from parallelizing the unpacking and clustering steps of the raw data from the silicon strip modules for reconstruction of charged particle tracks. Throughput is further improved by concurrently processing multiple events…

Linear Programs (LPs) appear in a large number of applications and offloading them to the GPU is viable to gain performance. Existing work on offloading and solving an LP on GPU suggests that performance is gained from large sized LPs…

分布式、并行与集群计算 · 计算机科学 2016-09-27 Amit Gurung , Rajarshi Ray