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Regular path queries (RPQs) the ubiquitous mechanism for querying data graphs of partially known structure. RPQs are in essence regular expressions over the edge symbols. The answer to an RPQ on a given graph (database) is the set of pairs…

Formal Languages and Automata Theory · Computer Science 2020-02-04 Gosta Grahne , Alex Thomo

Evaluating high-dimensional integrals via deep hierarchical recurrences is a dominant cost in quantum chemistry. While CPUs manage these efficiently, GPUs suffer a critical mismatch: limited per-thread memory is quickly overwhelmed by an…

Computational Physics · Physics 2026-05-14 Yihong Zhang , Xinran Wei , Junshi Chen , Fusong Ju , Wei Hu , Jinlong Yang , Huanhuan Xia

One major technical challenge for modern analytical database systems is how to leverage GPU to exploit their massive parallelism and high bandwidth. Yet, existing GPU-driven database engines suffer from inefficiencies caused by frequent…

Databases · Computer Science 2026-05-12 Tsuyoshi Ozawa , Kazuo Goda

In the last decade, substantial progress has been made towards standardizing the syntax of graph query languages, and towards understanding their semantics and complexity of evaluation. In this paper, we consider temporal property graphs…

Databases · Computer Science 2022-03-11 Marcelo Arenas , Pedro Bahamondes , Amir Aghasadeghi , Julia Stoyanovich

As one of the most fundamental problems in graph processing, the Single-Source Shortest Path (SSSP) problem plays a critical role in numerous application scenarios. However, existing GPU-based solutions remain inefficient, as they typically…

Data Structures and Algorithms · Computer Science 2026-02-11 Zhengding Hu , Jingwen Sun , Le Jiang , Yuhao Wang , Junqing Lin , Yi Zong , Guangzhong Sun

Regular path queries (RPQs) select nodes connected by some path in a graph. The edge labels of such a path have to form a word that matches a given regular expression. We investigate the evaluation of RPQs with an additional constraint that…

Databases · Computer Science 2013-01-01 Guillaume Bagan , Angela Bonifati , Benoit Groz

Efficient Graph processing is challenging because of the irregularity of graph algorithms. Using GPUs to accelerate irregular graph algorithms is even more difficult to be efficient, since GPU's highly structured SIMT architecture is not a…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-04-05 Xuhao Chen

We study the minimization problem for Conjunctive Regular Path Queries (CRPQs) and unions of CRPQs (UCRPQs). This is the problem of checking, given a query and a number $k$, whether the query is equivalent to one of size at most $k$. For…

Databases · Computer Science 2025-04-02 Diego Figueira , Rémi Morvan , Miguel Romero

Evaluation of regular path queries (RPQs) is a central problem in graph databases. We investigate the corresponding enumeration problem, that is, given a graph and an RPQ, enumerate all paths in the graph that match the RPQ. We consider…

Databases · Computer Science 2017-10-09 Wim Martens , Tina Trautner

Deep learning training at scale is resource-intensive and time-consuming, often running across hundreds or thousands of GPUs for weeks or months. Efficient checkpointing is crucial for running these workloads, especially in multi-tenant…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-02-25 Radostin Stoyanov , Viktória Spišaková , Jesus Ramos , Steven Gurfinkel , Andrei Vagin , Adrian Reber , Wesley Armour , Rodrigo Bruno

Local search plays a central role in many effective heuristic algorithms for the vehicle routing problem (VRP) and its variants. However, neighborhood exploration is known to be computationally expensive and time consuming, especially for…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-01-30 Zhenyu Lei , Jin-Kao Hao , Qinghua Wu

We present qrpca, a fast and scalable QR-decomposition principal component analysis package. The software, written in both R and python languages, makes use of torch for internal matrix computations, and enables GPU acceleration, when…

Instrumentation and Methods for Astrophysics · Physics 2022-09-07 Rafael S. de Souza , Xu Quanfeng , Shiyin Shen , Chen Peng , Zihao Mu

We introduce an algorithmic framework for performing QR factorization with column pivoting (QRCP) on general matrices. The framework enables the design of practical QRCP algorithms through user-controlled choices for the core subroutines.…

Mathematical Software · Computer Science 2025-07-02 Maksim Melnichenko , Riley Murray , William Killian , James Demmel , Michael W. Mahoney , Piotr Luszczek , Mark Gates

For large-scale graph analytics on the GPU, the irregularity of data access and control flow, and the complexity of programming GPUs have been two significant challenges for developing a programmable high-performance graph library.…

Distributed, Parallel, and Cluster Computing · Computer Science 2016-02-24 Yangzihao Wang , Andrew Davidson , Yuechao Pan , Yuduo Wu , Andy Riffel , John D. Owens

Solving real-world optimization problems with quantum computing requires choosing between a large number of options concerning formulation, encoding, algorithm and hardware. Finding good solution paths is challenging for end users and…

Regular path queries (RPQs) in graph databases are bottlenecked by the memory wall. Emerging processing-in-memory (PIM) technologies offer a promising solution to dispatch and execute path matching tasks in parallel within PIM modules. We…

Databases · Computer Science 2024-03-18 Ruoyan Ma , Shengan Zheng , Guifeng Wang , Jin Pu , Yifan Hua , Wentao Wang , Linpeng Huang

Constraints are powerful declarative constructs that allow users to conveniently restrict variable values that potentially range over an infinite domain. In this paper, we propose a constraint path query language over property graphs, which…

Databases · Computer Science 2025-12-02 Heyang Li , Anthony Widjaja Lin , Domagoj Vrgoč

Structural clustering is one of the most popular graph clustering methods, which has achieved great performance improvement by utilizing GPUs. Even though, the state-of-the-art GPU-based structural clustering algorithm, GPUSCAN, still…

Databases · Computer Science 2023-12-01 Long Yuan , Zeyu Zhou , Xuemin Lin , Zi Chen , Xiang Zhao , Fan Zhang

Dynamic programming (DP) is a cornerstone of combinatorial optimization, yet its inherently sequential structure has long limited its scalability in scenario-based stochastic programming (SP). This paper introduces a GPU-accelerated…

Optimization and Control · Mathematics 2025-11-25 Jingyi Zhao , Linxin Yang , Haohua Zhang , Tian Ding

Real time processing for teamwork action recognition is a challenge, due to complex computational models to achieve high system performance. Hence, this paper proposes a framework based on Graphical Processing Units (GPUs) to achieve a…

Distributed, Parallel, and Cluster Computing · Computer Science 2013-10-15 Mohamed Elhoseiny , Hossam Faheem , Taymour Nazmy , Eman Shaaban