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Convolutional gridding is a processor-intensive step in interferometric imaging. While it is possible to use graphics processing units (GPUs) to accelerate this operation, existing methods use only a fraction of the available flops. We…

天体物理仪器与方法 · 物理学 2016-06-29 Bruce Merry

The large-scale simulation of dynamical systems is critical in numerous scientific and engineering disciplines. However, traditional numerical solvers are limited by the choice of step sizes when estimating integration, resulting in a…

计算工程、金融与科学 · 计算机科学 2023-09-21 Zhongzhan Huang , Senwei Liang , Hong Zhang , Haizhao Yang , Liang Lin

Efficient transactional management is a delicate task. As systems face transactions of inherently different types, ranging from point updates to long running analytical computations, it is hard to satisfy their individual requirements with…

数据库 · 计算机科学 2017-09-14 Ankur Sharma , Felix Martin Schuhknecht , Jens Dittrich

The present work attempts to integrate the independent efforts in the fast N-body community to create the fastest N-body library for many-core and heterogenous architectures. Focus is placed on low accuracy optimizations, in response to the…

数值分析 · 计算机科学 2012-09-20 Rio Yokota

Density functionals at the level of the Generalized Gradient Approximation (GGA) and a plane-wave basis set are widely used today to perform ab initio molecular dynamics (AIMD) simulations. Going up in the ladder of accuracy of density…

计算物理 · 物理学 2021-10-18 Sagarmoy Mandal , Ritama Kar , Tobias Kloeffel , Bernd Meyer , Nisanth N. Nair

The 3D point cloud perception has emerged as a fundamental role for a wide range of applications. In particular, with the rapid development of neural networks, the voxel-based networks attract great attention due to their excellent…

硬件体系结构 · 计算机科学 2024-10-01 Xipeng Lin , Shanshi Huang , Hongwu Jiang

Tree-like structures such as retinal images are widely studied in computer-aided diagnosis systems for large-scale screening programs. Despite several segmentation and tracking methods proposed in the literature, there still exist several…

计算机视觉与模式识别 · 计算机科学 2017-06-27 Samaneh Abbasi-Sureshjani , Marta Favali , Giovanna Citti , Alessandro Sarti , Bart M. ter Haar Romeny

The large growth of flash ADC techniques for processing signals, especially in applications of streaming data, raises issues such as data flow through an acquisition system, long-term storage, and greater complexity in data analysis. In…

仪器与探测器 · 物理学 2015-06-18 D. Blyth , M. Gibson , D. Mcfarland , J. R. Comfort

We developed a modification to the calculation of the two-point correlation function commonly used in the analysis of large scale structure in cosmology. An estimator of the two-point correlation function is constructed by contrasting the…

宇宙学与河外天体物理 · 物理学 2017-12-20 Regina Demina , Sanha Cheong , Segev BenZvi , Otto Hindrichs

We put forward a functional renormalisation group approach for the direct computation of real time correlation functions, also applicable at finite temperature and density. We construct a general class of regulators that preserve the…

高能物理 - 唯象学 · 物理学 2017-07-07 Jan M. Pawlowski , Nils Strodthoff

We present a GPU-accelerated cosmological simulation code, PhotoNs-GPU, based on algorithm of Particle Mesh Fast Multipole Method (PM-FMM), and focus on the GPU utilization and optimization. A proper interpolated method for truncated…

天体物理仪器与方法 · 物理学 2021-12-28 Qiao Wang , Chen Meng

Diffusion Transformers (DiTs) are increasingly adopted in scientific computing, yet growing model sizes and resolutions make distributed multi-GPU inference essential. Ulysses sequence parallelism scales DiT inference but introduces…

分布式、并行与集群计算 · 计算机科学 2026-04-22 Bin Ma , Xingjian Ding , Tekin Bicer , Pengfei Su , Dong Li

In our previous work, we applied the ICCF-Cut method to the continuum reverberation mapping (CRM) of six active galactic nuclei (AGNs) based on the published Swift data. Extending this work, we perform a systematic AGN CRM study utilizing…

星系天体物理 · 物理学 2025-11-11 Chi-Zhuo Wang , Xue-Bing Wu , Yuanzhe Jiang , Qinchun Ma , Huapeng Gu , Yuhan Wen

Detecting visually similar images is a particularly useful attribute to look to when calculating product recommendations. Embedding similarity, which utilizes pre-trained computer vision models to extract high-level image features, has…

计算机视觉与模式识别 · 计算机科学 2023-08-31 Karl Audun Kagnes Borgersen , Morten Goodwin , Jivitesh Sharma , Tobias Aasmoe , Mari Leonhardsen , Gro Herredsvela Rørvik

Modern processors are equipped with single instruction multiple data (SIMD) instructions for fine-grained data parallelism. Compiler auto-vectorization techniques that target SIMD instructions face performance limitations due to…

密码学与安全 · 计算机科学 2025-07-08 Yibo He , Cunjian Huang , Xianmiao Qu , Hongdeng Chen , Wei Yang , Tao Xie

The two point correlation function (2PCF) is a powerful statistical tool to measure galaxy clustering. Although 2PCF has also been used to study the clustering of stars on parsec and sub-parsec scales, its physical implication is not clear…

星系天体物理 · 物理学 2024-02-02 Yike Zhang , Wenting Wang , Jiaxin Han , Xiaohu Yang , Vicente Rodriguez-Gomez , Carles G. Palau , Zhenlin Tan

This paper proposes TASKPROF, a profiler that identifies parallelism bottlenecks in task parallel programs. It leverages the structure of a task parallel execution to perform fine-grained attribution of work to various parts of the program.…

编程语言 · 计算机科学 2017-07-04 Adarsh Yoga , Santosh Nagarakatte

Neurosim is a fast, real-time, high-performance library for simulating sensors such as dynamic vision sensors, RGB cameras, depth sensors, and inertial sensors. It can also simulate agile dynamics of multi-rotor vehicles in complex and…

机器人学 · 计算机科学 2026-02-17 Richeek Das , Pratik Chaudhari

Efficient and high-fidelity polarization demosaicking is critical for industrial applications of the division of focal plane (DoFP) polarization imaging systems. However, existing methods have an unsatisfactory balance of speed, accuracy,…

图像与视频处理 · 电气工程与系统科学 2024-09-02 Guangsen Liu , Peng Rao , Xin Chen , Yao Li , Haixin Jiang

Finding the convex hull is a fundamental problem in computational geometry. Quickhull is a fast algorithm for finding convex hulls. In this paper, we present VQhull, a fast parallel implementation of Quickhull that exploits vector…

计算几何 · 计算机科学 2025-10-13 Thomas Koopman , Jordy Aaldering , Bernard van Gastel , Sven-Bodo Scholz