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Concurrent hash tables are one of the most important concurrent data structures with numerous applications. Since hash table accesses can dominate the execution time of the overall application, we need implementations that achieve good…

数据结构与算法 · 计算机科学 2016-09-07 Tobias Maier , Peter Sanders , Roman Dementiev

The increasing complexity and scale of cosmological N-body simulations, driven by astronomical surveys like Euclid, call for a paradigm shift towards more sustainable and energy-efficient high-performance computing (HPC). The rising energy…

Vector search (VS) is now available in most database engines. However, while vector search is a common feature in AI/ML/LLMs where the dominant computing platforms are GPUs, existing database engines operate on CPUs even when implementing…

数据库 · 计算机科学 2026-05-18 Vasilis Mageirakos , Joel André , Marko Kabić , Bowen Wu , Yannis Chronis , Gustavo Alonso

Parallel algorithms on CPU and GPU are implemented for the Unified Gas-Kinetic Scheme and their performances are investigated and compared by a two dimensional channel flow case. The parallel CPU algorithm has a one dimensional block…

计算物理 · 物理学 2018-11-02 Jizhou Liu , Fang Q. Hu , Xiaodong Li

Applications in many domains require processing moving object trajectories. In this work, we focus on a trajectory similarity search that finds all trajectories within a given distance of a query trajectory over a time interval, which we…

分布式、并行与集群计算 · 计算机科学 2014-10-13 Michael Gowanlock , Henri Casanova

Cuckoo hashing is an efficient technique for creating large hash tables with high space utilization and guaranteed constant access times. There, each item can be placed in a location given by any one out of k different hash functions. In…

数据结构与算法 · 计算机科学 2013-10-11 Nikolaos Fountoulakis , Konstantinos Panagiotou , Angelika Steger

Evolutionary computing (EC) has proven to be effective in solving complex optimization and robotics problems. Unfortunately, typical Evolutionary Algorithms (EAs) are constrained by the computational capacity available to researchers. More…

分布式、并行与集群计算 · 计算机科学 2025-02-19 Rustam Eynaliyev , Houcen Liu

Due to their highly parallel multi-cores architecture, GPUs are being increasingly used in a wide range of computationally intensive applications. Compared to CPUs, GPUs can achieve higher performances at accelerating the programs'…

分布式、并行与集群计算 · 计算机科学 2021-10-05 Frédéric Magoulès , Abal-Kassim Cheik Ahamed , Alban Desmaison , Jean-Christophe Léchenet , François Mayer , Haifa Ben Salem , Thomas Zhu

Sorting and binary searching a dense array can be considered the simplest and most space efficient form of indexing. This holds especially on GPUs as they exhibit exceptional sorting performance. However, the popular opinion is that such a…

数据库 · 计算机科学 2026-02-24 Justus Henneberg , Felix Schuhknecht

There is a growing interest in leveraging GPUs for tasks beyond ML, especially in database systems. Despite the existing extensive work on GPU-based database operators, several questions are still open. For instance, the performance of…

数据库 · 计算机科学 2025-02-13 Bowen Wu , Dimitrios Koutsoukos , Gustavo Alonso

Hybrid search, which jointly optimizes vector similarity and structured predicate filtering, has become a fundamental building block for modern AI-driven systems. While recent predicate-aware ANN indices improve filtering efficiency on…

数据库 · 计算机科学 2026-04-21 Xinkui Zhao , Hengxuan Lou , Yifan Zhang , Junjie Dai , Shuiguang Deng , Jianwei Yin

The ability of Gaussian processes (GPs) to predict the behavior of dynamical systems as a more sample-efficient alternative to parametric models seems promising for real-world robotics research. However, the computational complexity of GPs…

机器人学 · 计算机科学 2022-03-01 Abdolreza Taheri , Joni Pajarinen , Reza Ghabcheloo

There has been significant progress in developing neural network architectures that both achieve high predictive performance and that also achieve high application-level inference throughput (e.g., frames per second). Another metric of…

机器学习 · 计算机科学 2022-12-16 Jack Kosaian , Amar Phanishayee

Over the past decade, the landscape of data analytics has seen a notable shift towards heterogeneous architectures, particularly the integration of GPUs to enhance overall performance. In the realm of in-memory analytics, which often…

数据库 · 计算机科学 2024-06-21 Harshit Sharma , Anmol Sharma

With heterogeneous systems, the number of GPUs per chip increases to provide computational capabilities for solving science at a nanoscopic scale. However, low utilization for single GPUs defies the need to invest more money for expensive…

分布式、并行与集群计算 · 计算机科学 2025-03-11 Tanzima Z. Islam , Aniruddha Marathe , Holland Schutte , Mohammad Zaeed

General Purpose Graphic Processing Unit(GPGPU) is used widely for achieving high performance or high throughput in parallel programming. This capability of GPGPUs is very famous in the new era and mostly used for scientific computing which…

分布式、并行与集群计算 · 计算机科学 2018-10-10 Vajira Thambawita , Roshan G. Ragel , Dhammike Elkaduwe

Processing moving object trajectories arises in many application domains and has been addressed by practitioners in the spatiotemporal database and Geographical Information System communities. In this work, we focus on a trajectory…

数据库 · 计算机科学 2014-09-16 Michael G. Gowanlock , Henri Casanova

The Convex Hull algorithm is one of the most important algorithms in computational geometry, with many applications such as in computer graphics, robotics, and data mining. Despite the advances in the new algorithms in this area, it is…

分布式、并行与集群计算 · 计算机科学 2023-03-21 Roberto Carrasco , Héctor Ferrada , Cristóbal A. Navarro , Nancy Hitschfeld

Nowadays, GPU accelerators are commonly used to speed up general-purpose computing tasks on a variety of hardware. However, due to the diversity of GPU architectures and processed data, optimization of codes for a particular type of…

分布式、并行与集群计算 · 计算机科学 2021-09-20 Jiří Filipovič , Jana Hozzová , Amin Nezarat , Jaroslav Oľha , Filip Petrovič

We provide a preliminary study on utilizing GPU (Graphics Processing Unit) to accelerate computation for three simulation optimization tasks with either first-order or second-order algorithms. Compared to the implementation using only CPU…

分布式、并行与集群计算 · 计算机科学 2024-04-19 Jinghai He , Haoyu Liu , Yuhang Wu , Zeyu Zheng , Tingyu Zhu