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Knowledge Tracing (KT) aims to mine students' evolving knowledge states and predict their future question-answering performance. Existing methods based on heterogeneous information networks (HINs) are prone to introducing noises due to…

Artificial Intelligence · Computer Science 2025-11-20 Zhiyi Duan , Zixing Shi , Hongyu Yuan , Qi Wang

In hadron collider experiments, triggering the detector to store interesting events for offline analysis is a challenge due to the high rates and multiplicities of particles produced. Maintaining high trigger efficiency for the physics we…

High Energy Physics - Experiment · Physics 2019-08-13 Mark S. Neubauer

Despite advances in the programmable logic capabilities of modern trigger systems, a significant bottleneck remains in the amount of data to be transported from the detector to off-detector logic where trigger decisions are made. We…

In the ALICE experiment hundreds of users are analyzing big datasets on a Grid system. High throughput and short turn-around times are achieved by a centralized system called the LEGO trains. This system combines analysis from different…

High Energy Physics - Experiment · Physics 2019-08-13 Markus Zimmermann

The ALICE experiment at CERN is preparing for a major upgrade for the third phase of data taking run (Run 3), when the high luminosity phase of the Large Hadron Collider (LHC) starts. The increase in the beam luminosity will result in high…

Instrumentation and Detectors · Physics 2019-02-20 Jubin Mitra , Erno David , Eduardo Mendez , Shuaib Ahmad Khan , Tivadar Kiss , Sophie Baron , Alex Kluge , Tapan Nayak

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

Basic Linear Algebra Subprograms (BLAS) is a core library in scientific computing and machine learning. This paper presents FT-BLAS, a new implementation of BLAS routines that not only tolerates soft errors on the fly, but also provides…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-04-09 Yujia Zhai , Elisabeth Giem , Quan Fan , Kai Zhao , Jinyang Liu , Zizhong Chen

Early-Exit Large Language Models (EE-LLMs) enable high throughput inference by allowing tokens to exit early at intermediate layers. However, their throughput is limited by the computational and memory savings. Existing EE-LLM frameworks…

Computation and Language · Computer Science 2025-11-03 Avinash Kumar , Shashank Nag , Jason Clemons , Lizy John , Poulami Das

Emerging artificial intelligence (AI) and machine learning (ML) workloads present new challenges of managing the collective communication used in distributed training across hundreds or even thousands of GPUs. This paper presents STrack, a…

Networking and Internet Architecture · Computer Science 2024-07-25 Yanfang Le , Rong Pan , Peter Newman , Jeremias Blendin , Abdul Kabbani , Vipin Jain , Raghava Sivaramu , Francis Matus

As from the run 3 of CERN LHC scheduled in 2022, the upgraded ALICE experiment will use a Common Readout Unit (CRU) at the heart of the data acquisition system. The CRU, based on the PCIe40 hardware designed for LHCb, is a common interface…

Instrumentation and Detectors · Physics 2021-06-23 O. Bourrion , J. Bouvier , F. Costa , E. David , J. Imrek , T. M. Nguyen , S. Mukherjee

The LCLS2 Free Electron Laser FEL will generate xray pulses to beamline experiments at up to 1Mhz These experimentals will require new ultrahigh rate UHR detectors that can operate at rates above 100 kHz and generate data throughputs…

Instrumentation and Detectors · Physics 2023-06-01 Ryan Herbst , Ryan Coffee , Nathan Fronk , Kukhee Kim , Kuktae Kim , Larry Ruckman , J. J. Russell

The ALICE High Level Trigger has to process data online, in order to select interesting (sub)events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber (TPC), we present two…

Instrumentation and Detectors · Physics 2015-06-26 V. Lindenstruth , C. Loizides , D. Roehrich , B. Skaali , T. Steinbeck , R. Stock , H. Tilsner , K. Ullaland , A. Vestbo , T. Vik

Layout-Aware Data Scheduler (LADS) data transfer tool, identifies and addresses the issues that lead to congestion on the path of an end-to-end data transfer in the terabit network environments. It exploits the underlying storage layout at…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-04-05 Preethika Kasu , Taeuk Kim , Youngjae Kim , Jung-Ho Um , Kyongseok Park , Scott Atchley

ALICE (A Large Ion Collider Experiment) is the heavy-ion detector designed to study the strongly interacting state of matter realized in relativistic heavy-ion collisions at the CERN Large Hadron Collider (LHC). A major upgrade of the…

Instrumentation and Detectors · Physics 2019-08-14 Pascal Boeschoten , Filippo Costa

We propose a new fixed latency scheme for Xilinx gigabit transceivers that will be used in the upgrade of the ATLAS forward muon spectrometer at the Large Hadron Collider. The fixed latency scheme is implemented in a 4.8 Gbps link between a…

Instrumentation and Detectors · Physics 2015-10-28 Jinhong Wang , Xueye Hu , Thomas Schwarz , Junjie Zhu , J. W. Chapman , Tiesheng Dai , Bing Zhou

After the current shutdown, the LHC is about to resume operation for a new data-taking period, when it will operate with increased luminosity, event rate and center of mass energy. The new conditions will impose more demanding constraints…

Instrumentation and Detectors · Physics 2019-08-13 Sebastien Prince

The Low Latency Fault Tolerance (LLFT) system provides fault tolerance for distributed applications, using the leader-follower replication technique. The LLFT system provides application-transparent replication, with strong replica…

Distributed, Parallel, and Cluster Computing · Computer Science 2010-08-09 Wenbing Zhao , P. M. Melliar-Smith , L. E. Moser

The ALICE High-Level Trigger processes data online, to either select interesting (sub-) events, or to compress data efficiently by modeling techniques. Focusing on the main data source, the Time Projection Chamber, the architecure of the…

Instrumentation and Detectors · Physics 2009-11-10 V. Lindenstruth , C. Loizides , D. Roehrich , B. Skaali , T. Steinbeck , R. Stock , H. Tilsner , K. Ullaland , A. Vestbo , T. Vik

With the current increase in the data produced by the Large Hadron Collider (LHC) at CERN, it becomes important to process this data in a corresponding manner. To begin with, to efficiently select events that contain relevant information…

Hardware Architecture · Computer Science 2022-12-09 Natalia Cherezova , Dmitri Mihhailov , Sergei Devadze , Artur Jutman

The explosive growth of Large Language Models (LLMs), such as GPT-4 with 1.8 trillion parameters, demands a fundamental rethinking of data center architecture to ensure scalability, efficiency, and cost-effectiveness. Our work provides a…

Hardware Architecture · Computer Science 2025-09-09 Jesmin Jahan Tithi , Hanjiang Wu , Avishaii Abuhatzera , Fabrizio Petrini