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We ported to the GPU with CUDA the Astrometric Verification Unit-Global Sphere Reconstruction (AVU-GSR) Parallel Solver developed for the ESA Gaia mission, by optimizing a previous OpenACC porting of this application. The code aims to find,…

Instrumentation and Methods for Astrophysics · Physics 2023-08-03 Valentina Cesare , Ugo Becciani , Alberto Vecchiato , Mario Gilberto Lattanzi , Fabio Pitari , Marco Aldinucci , Beatrice Bucciarelli

Quantum computing holds great potential to accelerate the process of solving complex combinatorial optimization problems. The Distributed Quantum Approximate Optimization Algorithm (DQAOA) addresses high-dimensional, dense problems using…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-06-13 Zhihao Xu , Srikar Chundury , Seongmin Kim , Amir Shehata , Xinyi Li , Ang Li , Tengfei Luo , Frank Mueller , In-Saeng Suh

Large Language Models (LLMs) are fundamentally constrained by the quadratic computational cost of self-attention and the "Lost in the Middle" phenomenon, where reasoning capabilities degrade as context windows expand. Existing solutions,…

Artificial Intelligence · Computer Science 2026-02-18 Mustafa Arslan

Driven by deep learning, there has been a surge of specialized processors for matrix multiplication, referred to as TensorCore Units (TCUs). These TCUs are capable of performing matrix multiplications on small matrices (usually 4x4 or…

Performance · Computer Science 2019-11-26 Abdul Dakkak , Cheng Li , Isaac Gelado , Jinjun Xiong , Wen-mei Hwu

Online analytical processing of queries on datasets in the many-terabyte range is only possible with costly distributed computing systems. To decrease the cost and increase the throughput, systems can leverage accelerators such as GPUs,…

This paper describes the aDORe repository architecture, designed and implemented for ingesting, storing, and accessing a vast collection of Digital Objects at the Research Library of the Los Alamos National Laboratory. The aDORe…

Digital Libraries · Computer Science 2007-05-23 Herbert Van de Sompel , Jeroen Bekaert , Xiaoming Liu , Luda Balakireva , Thorsten Schwander

Embodied AI systems operate in dynamic environments, requiring seamless integration of perception and generation modules to process high-frequency input and output demands. Traditional sequential computation patterns, while effective in…

Artificial Intelligence · Computer Science 2025-09-12 Shulai Zhang , Ao Xu , Quan Chen , Han Zhao , Weihao Cui , Ningxin Zheng , Haibin Lin , Xin Liu , Minyi Guo

This document is one of the deliverable reports created for the ESCAPE project. ESCAPE stands for Energy-efficient Scalable Algorithms for Weather Prediction at Exascale. The project develops world-class, extreme-scale computing…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-08-20 Joris Van Bever , Alex McFaden , Zbigniew Piotrowski , Daan Degrauwe

Tensor Processing Units (TPUs) are specialized hardware accelerators for deep learning developed by Google. This paper aims to explore TPUs in cloud and edge computing focusing on its applications in AI. We provide an overview of TPUs,…

Hardware Architecture · Computer Science 2023-11-15 Diego Sanmartín Carrión , Vera Prohaska

A considerable amount of research and engineering went into designing proxy applications, which represent common high-performance computing workloads, to co-design and evaluate the current generation of supercomputers, e.g., RIKEN's…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-04-18 Satoshi Matsuoka , Jens Domke , Mohamed Wahib , Aleksandr Drozd , Ray Bair , Andrew A. Chien , Jeffrey S. Vetter , John Shalf

Supercomputers become faster as hardware and software technologies continue to evolve. Current supercomputers are capable of 1015 floating point operations per second (FLOPS) that called Petascale system. The High Performance Computer (HPC)…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-09-27 Jalal Abdulbaqi

ARCHYTAS aims to design and evaluate non-conventional hardware accelerators, in particular, optoelectronic, volatile and non-volatile processing-in-memory, and neuromorphic, to tackle the power, efficiency, and scalability bottlenecks of AI…

Neural architectures and hardware accelerators have been two driving forces for the progress in deep learning. Previous works typically attempt to optimize hardware given a fixed model architecture or model architecture given fixed…

Rapid growth of datacenter (DC) scale, urgency of cost control, increasing workload diversity, and huge software investment protection place unprecedented demands on the operating system (OS) efficiency, scalability, performance isolation,…

Operating Systems · Computer Science 2019-01-04 Chen Zheng , Lei Wang , Sally A. McKee , Lixin Zhang , Hainan Ye , Jianfeng Zhan

The emergence of new, off-path smart network cards (SmartNICs), known generally as Data Processing Units (DPU), has opened a wide range of research opportunities. Of particular interest is the use of these and related devices in tandem with…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-12-04 Nathan Tibbetts , Sifat Ibtisum , Satish Puri

Visapult is a prototype application and framework for remote visualization of large scientific datasets. We approach the technical challenges of tera-scale visualization with a unique architecture that employs high speed WANs and network…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-01-30 E. Wes Bethel , Brian Tierney , Jason Lee , Dan Gunther , Stephen Lau

Retrieval-Augmented Generation (RAG) is crucial for improving the quality of large language models by injecting proper contexts extracted from external sources. RAG requires high-throughput, low-latency Approximate Nearest Neighbor Search…

Hardware Architecture · Computer Science 2025-05-23 Seoyoung Ko , Hyunjeong Shim , Wanju Doh , Sungmin Yun , Jinin So , Yongsuk Kwon , Sang-Soo Park , Si-Dong Roh , Minyong Yoon , Taeksang Song , Jung Ho Ahn

On the path to exascale the landscape of computer device architectures and corresponding programming models has become much more diverse. While various low-level performance portable programming models are available, support at the…

We evaluate Julia as a single language and ecosystem paradigm powered by LLVM to develop workflow components for high-performance computing. We run a Gray-Scott, 2-variable diffusion-reaction application using a memory-bound, 7-point…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-09-29 William F. Godoy , Pedro Valero-Lara , Caira Anderson , Katrina W. Lee , Ana Gainaru , Rafael Ferreira da Silva , Jeffrey S. Vetter

Heterogeneity is the prevalent trend in the rapidly evolving high-performance computing (HPC) landscape in both hardware and application software. The diversity in hardware platforms, currently comprising various accelerators and a future…

Numerical Analysis · Mathematics 2025-07-15 Youngjun Lee , Klaus Weide , Wesley Kwiecinski , Jared O'Neal , Johann Rudi , Anshu Dubey