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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…

人工智能 · 计算机科学 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…

高能物理 - 实验 · 物理学 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…

高能物理 - 实验 · 物理学 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…

仪器与探测器 · 物理学 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…

高能物理 - 实验 · 物理学 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…

分布式、并行与集群计算 · 计算机科学 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…

计算与语言 · 计算机科学 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…

网络与互联网体系结构 · 计算机科学 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…

仪器与探测器 · 物理学 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…

仪器与探测器 · 物理学 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…

仪器与探测器 · 物理学 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…

分布式、并行与集群计算 · 计算机科学 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…

仪器与探测器 · 物理学 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…

仪器与探测器 · 物理学 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…

仪器与探测器 · 物理学 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…

分布式、并行与集群计算 · 计算机科学 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…

仪器与探测器 · 物理学 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…

硬件体系结构 · 计算机科学 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…

硬件体系结构 · 计算机科学 2025-09-09 Jesmin Jahan Tithi , Hanjiang Wu , Avishaii Abuhatzera , Fabrizio Petrini