Results 41 to 50 of about 2,373 (181)

Multisegment Parallel Coregistration of Sentinel-1 SAR Time-Series Images by Combining OpenMP With MPI

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Sentinel-1 synthetic aperture radar (SAR) imagery, with its wide-swath imaging capabilities, provides crucial data for large-area interferometric SAR (InSAR) surface deformation monitoring.
Yonghui Kang, Yonghong Zhang, Hong'an Wu, Jujie Wei, Xiaoxue Sun, Yue Zuo   +5 more
doaj   +1 more source

An Architecture for a Tri-Programming Model-Based Parallel Hybrid Testing Tool

Applied Sciences, 2023
As the development of high-performance computing (HPC) is growing, exascale computing is on the horizon. Therefore, it is imperative to develop parallel systems, such as graphics processing units (GPUs) and programming models, that can effectively ...
Saeed Musaad Altalhi, Fathy Elbouraey Eassa, Abdullah Saad Al-Malaise Al-Ghamdi, Sanaa Abdullah Sharaf, Ahmed Mohammed Alghamdi, Khalid Ali Almarhabi, Maher Ali Khemakhem   +6 more
doaj   +1 more source

Using the C++ Sender Asynchronous Programming Model in the Implementation of Efficient Epidemiological Simulations

Concurrency and Computation: Practice and Experience, Volume 38, Issue 15, August 2026.
ABSTRACT This paper evaluates the C++ Sender Programming Model for heterogeneous parallel computing, using an Agent‐Based epidemiological simulator as a case study. Conventional simulations rely on proprietary frameworks like CUDA, creating vendor lock‐in. To assess the Sender Model as a portable alternative, we implement an SEIRS dengue simulator that
Pablo Alessandro Santos Hugen, Guilherme Galante, Rogério Luis Rizzi   +2 more
wiley   +1 more source

Experimental computer tomograph

Current Directions in Biomedical Engineering, 2015
The computed tomography is one of the most important medical instruments, allowing the non-invasive visualization of cross sections which are free from superpositions. Since 2000 an experimental computer tomo-graph of the third generation for the purpose
Heinemann D., Keller A., Jannek D.
doaj   +1 more source

Characterizing task-based OpenMP programs. [PDF]

PLoS ONE, 2015
Programmers struggle to understand performance of task-based OpenMP programs since profiling tools only report thread-based performance. Performance tuning also requires task-based performance in order to balance per-task memory hierarchy utilization ...
Ananya Muddukrishna, Peter A Jonsson, Mats Brorsson   +2 more
doaj   +1 more source

Experiences with OpenMP in tmLQCD [PDF]

Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 — PoS(LATTICE 2013), 2014
An overview is given of the lessons learned from the introduction of multi-threading using OpenMP in tmLQCD. In particular, programming style, performance measurements, cache misses, scaling, thread distribution for hybrid codes, race conditions, the overlapping of communication and computation and the measurement and reduction of certain overheads are
Albert Deuzeman, Karl Jansen, Bartosz Kostrzewa, Carsten Urbach   +3 more
openaire   +3 more sources

Enhancing Performance Analysis of OpenMP Task‐Based Applications: Enriched and Interactive Visualizations With StarVZ

Concurrency and Computation: Practice and Experience, Volume 38, Issue 15, August 2026.
ABSTRACT OpenMP, a leading tool for loop‐based parallel programming on shared memory platforms, is becoming a more powerful environment for exploiting task‐based parallelism. Recent specification versions have added support for new task clauses, while the OMPT interface provides a standard API for performance monitoring. In this paper, we present a new
Vinícius Garcia Pinto, Christian Einhardt Sousa Filho   +1 more
wiley   +1 more source

Vector‐Driven Projection and Backprojection

Medical Physics, Volume 53, Issue 8, August 2026.
Abstract Background Projection and backprojection are fundamental operators in tomographic image reconstruction. Existing approaches—namely pixel‐driven (PD), ray‐driven (RD), and distance‐driven (DD)—are subject to well‐known trade‐offs among interpolation artifacts, geometric flexibility, and computational cost. Purpose This study aims to introduce a
Ismail Melik Turker, Isa Yildirim
wiley   +1 more source

Efficient Tensor Completion Algorithms for Highly Oscillatory Operators

Numerical Linear Algebra with Applications, Volume 33, Issue 4, August 2026.
ABSTRACT We address the problem of recovering highly oscillatory operators, represented as n×n$$ n\times n $$ matrices with a fixed set of observed entries. Given that these matrices can be well compressed by butterfly matrix decomposition of L=𝒪(logn) levels requiring only O(nlogn)$$ O\left(n\log n\right) $$ degrees of freedom, we propose a novel ...
Navjot Singh, Edgar Solomonik, Xiaoye Sherry Li, Yang Liu   +3 more
wiley   +1 more source

Применение высокопроизводительных вычислений для решения задачи Коши с дробным уравнением Риккати по нелокальной неявной конечно-разностной схеме

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki
В статье представлено исследование вычислительной эффективности параллельной версии численного алгоритма для решения уравнения Риккати с производной дробного перменного порядка типа Герасимова-Капуто.
Твёрдый, Д.А., Паровик, Р.И.   +1 more
doaj   +1 more source