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High Performance Computing (HPC) supercomputers are expected to play an increasingly important role in HEP computing in the coming years. While HPC resources are not necessarily the optimal fit for HEP workflows, computing time at HPC…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-11-20 Federico Stagni , Andrea Valassi , Vladimir Romanovskiy

It is generally observed that the fraction of live lines in shared last-level caches (SLLC) is very small for chip multiprocessors (CMPs). This can be tackled using promotion-based replacement policies like re-reference interval prediction…

Hardware Architecture · Computer Science 2021-07-30 Tejas Shah , Bobbi Yogatama , Kyle Roarty , Rami Dahman

Spin-Transfer Torque RAM (STT-RAM) is widely considered a promising alternative to SRAM in the memory hierarchy due to STT-RAM's non-volatility, low leakage power, high density, and fast read speed. The STT-RAM's small feature size is…

Hardware Architecture · Computer Science 2019-08-12 Kyle Kuan , Tosiron Adegbija

The under exploitation of the available resources risks to be one of the main problems for a computing center. The growing demand of computational power necessarily entails more complex approaches in the management of the computing…

Distributed, Parallel, and Cluster Computing · Computer Science 2012-05-01 Federico Calzolari , Silvia Volpe

Nowadays, many companies possess various types of AI accelerators, forming heterogeneous clusters. Efficiently leveraging these clusters for high-throughput large language model (LLM) inference services can significantly reduce costs and…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-23 Yi Xiong , Jinqi Huang , Wenjie Huang , Xuebing Yu , Entong Li , Zhixiong Ning , Jinhua Zhou , Li Zeng , Xin Chen

With the growth of Renewable Energy (RE) generation, the operation of power grids has become increasingly complex. One solution could be automated grid operation, where Deep Reinforcement Learning (DRL) has repeatedly shown significant…

Machine Learning · Computer Science 2024-09-18 Malte Lehna , Clara Holzhüter , Sven Tomforde , Christoph Scholz

This paper addresses the challenge of representing complex human action (HA) in a nuclear power plant (NPP) digital twin (DT) and minimizing latency in partial computation offloading (PCO) in sixth-generation-enabled computing in the…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-07-18 Ibrahim Aliyu , Awwal M. Arigi , Tai-Won Um , Jinsul Kim

ALICE Overwatch is a project started in late 2015 to provide augmented online monitoring and data quality assurance utilizing time-stamped QA histograms produced by the ALICE High Level Trigger. The system receives the data via ZeroMQ,…

Instrumentation and Detectors · Physics 2019-10-02 R. J. Ehlers , J. D. Mulligan

High Throughput Computing (HTC) provides a convenient mechanism for running thousands of tasks. Many HTC systems exploit computers which are provisioned for other purposes by utilising their idle time - volunteer computing. This has great…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-10-23 A. Stephen McGough , Matthew Forshaw , John Brennan , Noura Al Moubayed , Stephen Bonner

Let's HPC (www.letshpc.org) is an open-access online platform to supplement conventional classroom oriented High Performance Computing (HPC) and Parallel & Distributed Computing (PDC) education. The web based platform provides online…

Computers and Society · Computer Science 2017-01-24 Akshar Varma , Yashwant Keswani , Yashodhan Bhatnagar , Bhaskar Chaudhury

At the High Luminosity LHC (HL-LHC), the CMS experiment will face a harsh environment with a high instantaneous luminosity up to 7x10$^{34}$/cm$^2$/s corresponding to an average of 140-200 multiple proton-proton collisions per bunch…

Instrumentation and Detectors · Physics 2018-12-04 Chang-Seong Moon

Massively parallel computing at the LHC could be the next leap necessary to reach an era of new discoveries at the LHC after the Higgs discovery. Scientific computing is a critical component of the LHC experiment, including operation,…

Computational Physics · Physics 2014-02-05 V. Halyo , P. LeGresley , P. Lujan

The strategies for and the performance of the CMS tracker alignment during the 2021-2022 LHC commissioning preceding the Run 3 data-taking period are described. The results of the very first tracker alignment after the pixel reinstallation,…

Instrumentation and Detectors · Physics 2023-02-01 Sandra Consuegra Rodríguez

We give an overview of the main features of the CMS trigger and data acquisition (DAQ) system. Then, we illustrate the strategies and trigger configurations (trigger tables) developed for the detector calibration and physics program of the…

Instrumentation and Detectors · Physics 2019-08-13 Marta Felcini

This letter proposes a novel three-tier content caching architecture for Vehicular Fog Caching (VFC)-assisted platoon, where the VFC is formed by the vehicles driving near the platoon. The system strategically coordinates storage across…

Networking and Internet Architecture · Computer Science 2026-02-05 Bowen Tan , Qiong Wu , Pingyi Fan , Kezhi Wang , Nan Cheng , Wen Chen

The ATLAS High Level Trigger (HLT) system provides software-based event selection after the initial LVL1 hardware trigger. It is composed of two stages, the LVL2 trigger and the Event Filter. The HLT is implemented as software tasks running…

High Energy Physics - Experiment · Physics 2014-11-17 S. Wheeler , J. Flammer , C. Meessen , Z. Qian , F. Touchard , France A. Negri , H. Zobernig

In the era of Internet of Things (IoT), Digital Twin (DT) is envisioned to empower various areas as a bridge between physical objects and the digital world. Through virtualization and simulation techniques, multiple functions can be…

Machine Learning · Computer Science 2023-07-14 Ziru Zhang , Xuling Zhang , Guangzhi Zhu , Yuyang Wang , Pan Hui

The High Luminosity Large Hadron Collider (HL-LHC) at CERN is expected to collide protons at a center-of-mass energy of 14 TeV and to reach the unprecedented peak instantaneous luminosity of $7.5 \times 10^{34} \text{cm}^{-2} \text{s}^{-1}$…

Instrumentation and Detectors · Physics 2023-01-26 Sascha Liechti

The ATLAS experiment at the Large Hadron Collider employs a two-level trigger system to record data at an average rate of 1 kHz from physics collisions, starting from an initial bunch crossing rate of 40 MHz. During the LHC Run 2…

Instrumentation and Detectors · Physics 2020-10-09 ATLAS Collaboration

Historically, high energy physics computing has been performed on large purpose-built computing systems. These began as single-site compute facilities, but have evolved into the distributed computing grids used today. Recently, there has…

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