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In the past decade, many vulnerabilities were discovered in microarchitectures which yielded attack vectors and motivated the study of countermeasures. Further, architectural and physical imperfections in DRAMs led to the discovery of…

Cryptography and Security · Computer Science 2024-04-15 Andrew J. Adiletta , M. Caner Tol , Yarkın Doröz , Berk Sunar

Random reshuffling, which randomly permutes the dataset each epoch, is widely adopted in model training because it yields faster convergence than with-replacement sampling. Recent studies indicate greedily chosen data orderings can further…

Machine Learning · Computer Science 2023-01-05 Yucheng Lu , Wentao Guo , Christopher De Sa

Physically Unclonable Functions (PUFs) have become an important and promising hardware primitive for device fingerprinting, device identification, or key storage. Intrinsic PUFs leverage components already found in existing devices, unlike…

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

The detection of sequential patterns in data is a basic functionality of modern data processing systems for complex event processing (CEP), OLAP, and retrieval-augmented generation (RAG). In practice, pattern matching is challenging, since…

Databases · Computer Science 2025-11-07 Cong Yu , Tuo Shi , Matthias Weidlich , Bo Zhao

Most existing studies on joint activity detection and channel estimation for grant-free massive random access (RA) systems assume perfect synchronization among all active users, which is hard to achieve in practice. Therefore, this paper…

Signal Processing · Electrical Eng. & Systems 2023-05-23 Xinyu Bian , Yuyi Mao , Jun Zhang

This paper summarizes the idea of Subarray-Level Parallelism (SALP) in DRAM, which was published in ISCA 2012, and examines the work's significance and future potential. Modern DRAMs have multiple banks to serve multiple memory requests in…

Hardware Architecture · Computer Science 2018-05-08 Yoongu Kim , Vivek Seshadri , Donghyuk Lee , Jamie Liu , Onur Mutlu

Runahead execution is a technique to mask memory latency caused by irregular memory accesses. By pre-executing the application code during occurrences of long-latency operations and prefetching anticipated cache-missed data into the cache…

Hardware Architecture · Computer Science 2025-04-03 Dean You , Jieyu Jiang , Xiaoxuan Wang , Yushu Du , Zhihang Tan , Wenbo Xu , Hui Wang , Jiapeng Guan , Zhenyuan Wang , Ran Wei , Shuai Zhao , Zhe Jiang

Memory bandwidth bottleneck is a major challenges in processing machine learning (ML) algorithms. In-memory acceleration has potential to address this problem; however, it needs to address two challenges. First, in-memory accelerator should…

Machine Learning · Computer Science 2019-01-10 Hajar Falahati , Pejman Lotfi-Kamran , Mohammad Sadrosadati , Hamid Sarbazi-Azad

Modern DRAM cells are periodically refreshed to prevent data loss due to leakage. Commodity DDR DRAM refreshes cells at the rank level. This degrades performance significantly because it prevents an entire rank from serving memory requests…

Hardware Architecture · Computer Science 2016-01-26 Kevin Kai-Wei Chang , Donghyuk Lee , Zeshan Chishti , Alaa R. Alameldeen , Chris Wilkerson , Yoongu Kim , Onur Mutlu

Grant-free random access (GFRA) is now a popular protocol for large-scale wireless multiple access systems in order to reduce control signaling. Resource allocation in GFRA can be viewed as a form of frame slotted ALOHA, where a ubiquitous…

Information Theory · Computer Science 2024-07-29 Alix Jeannerot , Malcolm Egan , Jean-Marie Gorce

Non-volatile memory (NVM) is a class of promising scalable memory technologies that can potentially offer higher capacity than DRAM at the same cost point. Unfortunately, the access latency and energy of NVM is often higher than those of…

Hardware Architecture · Computer Science 2018-05-01 HanBin Yoon , Justin Meza , Rachata Ausavarungnirun , Rachael A. Harding , Onur Mutlu

Byte-addressable non-volatile main memory (NVM) demands transactional mechanisms to access and manipulate data on NVM atomically. Those transaction mechanisms often employ a logging mechanism (undo logging or redo logging). However, the…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-04-19 Kai Wu , Jie Ren , Dong Li

Efficient signal detectors are rather important yet challenging to achieve satisfactory performance for large-scale communication systems. This paper considers a non-orthogonal sparse code multiple access (SCMA) configuration for…

Signal Processing · Electrical Eng. & Systems 2023-03-16 Yao Ge , Lei Liu , Shunqi Huang , David González G. , Yong Liang Guan , Zhi Ding

The initial location of data in DRAMs is determined and controlled by the 'address-mapping' and even modern memory controllers use a fixed and run-time-agnostic address mapping. On the other hand, the memory access pattern seen at the…

Hardware Architecture · Computer Science 2015-09-15 Mohsen Ghasempour , Jim Garside , Aamer Jaleel , Mikel Luján

DRAM-based memory is a critical factor that creates a bottleneck on the system performance since the processor speed largely outperforms the DRAM latency. In this thesis, we develop a low-cost mechanism, called ChargeCache, which enables…

Hardware Architecture · Computer Science 2016-09-26 Hasan Hassan

Modern DRAM cells are periodically refreshed to prevent data loss due to leakage. Commodity DDR DRAM refreshes cells at the rank level. This degrades performance significantly because it prevents an entire rank from serving memory requests…

Hardware Architecture · Computer Science 2017-12-22 Kevin K. Chang , Donghyuk Lee , Zeshan Chishti , Alaa R. Alameldeen , Chris Wilkerson , Yoongu Kim , Onur Mutlu

Hardware based memory pooling enabled by interconnect standards like CXL have been gaining popularity amongst cloud providers and system integrators. While pooling memory resources has cost benefits, it comes at a penalty of increased…

Hardware Architecture · Computer Science 2024-06-24 Chandrahas Tirumalasetty , Narasimha Annapreddy

This paper presents SHARP (Supercomputing for High-speed Avoidance and Reactive Planning), a proof-of-concept study demonstrating how high-performance computing (HPC) can enable millisecond-scale responsiveness in robotic control. While…

Fully-partitioned fixed-priority scheduling (FP-FPS) multiprocessor systems are widely found in real-time applications, where spin-based protocols are often deployed to manage the mutually exclusive access of shared resources.…

Operating Systems · Computer Science 2024-08-28 Shuai Zhao , Hanzhi Xu , Nan Chen , Ruoxian Su , Wanli Chang
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