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Modern systems mitigate Rowhammer using victim refresh, which refreshes the two neighbours of an aggressor row when it encounters a specified number of activations. Unfortunately, complex attack patterns like Half-Double break…

Cryptography and Security · Computer Science 2023-08-30 Anish Saxena , Saurav Mathur , Moinuddin Qureshi

Per Row Activation Counting (PRAC) has emerged as a robust framework for mitigating RowHammer (RH) vulnerabilities in modern DRAM systems. However, we uncover a critical vulnerability: a timing channel introduced by the Alert Back-Off (ABO)…

Cryptography and Security · Computer Science 2025-05-20 Jeonghyun Woo , Joyce Qu , Gururaj Saileshwar , Prashant J. Nair

Per-Row Activation Counting (PRAC), a DRAM read disturbance mitigation method, modifies key DRAM timing parameters, reportedly causing significant performance overheads in simulator-based studies. However, given known discrepancies between…

Hardware Architecture · Computer Science 2025-11-04 Jumin Kim , Seungmin Baek , Minbok Wi , Hwayong Nam , Michael Jaemin Kim , Sukhan Lee , Kyomin Sohn , Jung Ho Ahn

High-resolution sensors are critical for robust autonomous perception but impose a severe memory wall on battery-constrained electric vehicles. In these systems, data movement energy often outweighs computation. Traditional image…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Haohua Que , Mingkai Liu , Jiayue Xie , Haojia Gao , Jiajun Sun , Hongyi Xu , Handong Yao , Fei Qiao

Compute-Near-Memory (CNM) systems offer a promising approach to mitigate the von Neumann bottleneck by bringing computational units closer to data. However, optimizing for these architectures remains challenging due to their unique hardware…

Emerging Technologies · Computer Science 2025-08-18 Hamid Farzaneh , Asif Ali Khan , Jeronimo Castrillon

To address the issue of powerful row hammer (RH) attacks, our study involved an extensive analysis of the prevalent attack patterns in the field. We discovered a strong correlation between the timing and density of the active-to-active…

Cryptography and Security · Computer Science 2025-01-27 Nogeun Joo , Donghyuk Kim , Hyunjun Cho , Junseok Noh , Dongha Jung , Joo-Young Kim

Monitoring the chain-of-thought (CoT) of reasoning models is a promising approach for detecting covert misbehavior (i.e., hidden objectives) in code generation tasks. While large models (GPT-5, Gemini-3-Flash) can serve as effective CoT…

Cryptography and Security · Computer Science 2026-05-14 Nirav Diwan , Han Wang , Berkcan Kapusuzoglu , Ramin Moradi , Supriyo Chakraborty , Giri Iyengar , Sambit Sahu , Huan Zhang , Gang Wang

Coreset selection is powerful in reducing computational costs and accelerating data processing for deep learning algorithms. It strives to identify a small subset from large-scale data, so that training only on the subset practically…

Machine Learning · Computer Science 2024-03-01 Xiaobo Xia , Jiale Liu , Shaokun Zhang , Qingyun Wu , Hongxin Wei , Tongliang Liu

Chain-of-Thought (CoT) has been proven effective in enhancing the reasoning capabilities of large language models (LLMs). Recent advancements, such as OpenAI's o1 and DeepSeek-R1, suggest that scaling up the length of CoT sequences during…

Computation and Language · Computer Science 2025-09-17 Heming Xia , Chak Tou Leong , Wenjie Wang , Yongqi Li , Wenjie Li

Processing-using-DRAM (PuD) is a promising paradigm for alleviating the data movement bottleneck using DRAM's massive internal parallelism and bandwidth to execute very wide operations. Performing a PuD operation involves activating…

In rapid and massive data streams, it is often not possible to estimate the frequency of items with complete accuracy. To perform the operation in a reasonable amount of space and with sufficiently low latency, approximated methods are…

Databases · Computer Science 2019-04-18 Arijit Khan , Sixing Yan

In this paper, we propose MCUBERT to enable language models like BERT on tiny microcontroller units (MCUs) through network and scheduling co-optimization. We observe the embedding table contributes to the major storage bottleneck for tiny…

Machine Learning · Computer Science 2024-10-24 Zebin Yang , Renze Chen , Taiqiang Wu , Ngai Wong , Yun Liang , Runsheng Wang , Ru Huang , Meng Li

Objective: Inclusion of individualised electrical conductivities of head tissues is crucial for the accuracy of electrical source imaging techniques based on electro/magnetoencephalography and the efficacy of transcranial electrical…

In a number of machine learning models, an input query is searched across the trained class vectors to find the closest feature class vector in cosine similarity metric. However, performing the cosine similarities between the vectors in…

DRAM cells are susceptible to Data-Disturbance Errors (DDE), which can be exploited by an attacker to compromise system security. Rowhammer is a well-known DDE vulnerability that occurs when a row is repeatedly activated. Rowhammer can be…

Cryptography and Security · Computer Science 2024-07-24 Moinuddin Qureshi , Anish Saxena , Aamer Jaleel

Massive numbers of nodes will be connected in future wireless networks. This brings great difficulty to collect a large amount of data. Instead of collecting the data individually, computation over multi-access channel (CoMAC) provides an…

Information Theory · Computer Science 2018-12-14 Fangzhou Wu , Li Chen , Nan Zhao , Yunfei Chen , F. Richard Yu , Guo Wei

We introduce CompAct, a technique that reduces peak memory utilization on GPU by 25-30% for pretraining and 50% for fine-tuning of LLMs. Peak device memory is a major limiting factor in training LLMs, with various recent works aiming to…

Machine Learning · Computer Science 2025-02-11 Yara Shamshoum , Nitzan Hodos , Yuval Sieradzki , Assaf Schuster

Memory is a critical design consideration in current data-intensive DNN accelerators, as it profoundly determines energy consumption, bandwidth requirements, and area costs. As DNN structures become more complex, a larger on-chip memory…

Hardware Architecture · Computer Science 2024-02-02 Zhanhong Tan , Zijian Zhu , Kaisheng Ma

This paper proposes a new hardware accelerator for sparse convolutional neural networks (CNNs) by building a hardware unit to perform the Image to Column (IM2COL) transformation of the input feature map coupled with a systolic array-based…

Hardware Architecture · Computer Science 2021-11-29 Mohammadreza Soltaniyeh , Richard P. Martin , Santosh Nagarakatte

We present CoMet, a novel approach for computing a group's cohesion and using that to improve a robot's navigation in crowded scenes. Our approach uses a novel cohesion-metric that builds on prior work in social psychology. We compute this…