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The evolution of the IEEE 802.11 standards marks a significant throughput advancement in wireless access technologies, progressively increasing bandwidth capacities from 20 MHz in the IEEE 802.11a to up to 320 MHz in the latest IEEE…

网络与互联网体系结构 · 计算机科学 2024-05-14 Dongyu Wei , Liu Cao , Lyutianyang Zhang , Xiangyu Gao , Hao Yin

The IEEE 802.11 standards, culminating in IEEE 802.11be (Wi-Fi 7), have significantly expanded bandwidth capacities from 20 MHz to 320 MHz, marking a crucial evolution in wireless access technology. Despite these advancements, the full…

网络与互联网体系结构 · 计算机科学 2024-05-02 Dongyu Wei , Liu Cao , Lyutianyang Zhang , Xiangyu Gao , Hao Yin

We propose overcoming the memory capacity limitation of GPUs with high-capacity Storage-Class Memory (SCM) and DRAM cache. By significantly increasing the memory capacity with SCM, the GPU can capture a larger fraction of the memory…

硬件体系结构 · 计算机科学 2024-03-15 Jeongmin Hong , Sungjun Cho , Geonwoo Park , Wonhyuk Yang , Young-Ho Gong , Gwangsun Kim

We study the network spectral efficiency of decentralized vector multiple access channels (MACs) when the number of accessible dimensions per transmitter is strategically limited. Considering each dimension as a frequency band, we call this…

信息论 · 计算机科学 2009-05-19 Samir M. Perlaza , Merouane Debbah , Samson Lasaulce , Hanna Bogucka

In modern server CPUs, the Last-Level Cache (LLC) serves not only as a victim cache for higher-level private caches but also as a buffer for low-latency DMA transfers between CPU cores and I/O devices through Direct Cache Access (DCA).…

硬件体系结构 · 计算机科学 2025-06-16 Haneul Park , Jiaqi Lou , Sangjin Lee , Yifan Yuan , Kyoung Soo Park , Yongseok Son , Ipoom Jeong , Nam Sung Kim

High main memory latency continues to limit performance of modern high-performance out-of-order cores. While DRAM latency has remained nearly the same over many generations, DRAM bandwidth has grown significantly due to higher frequencies,…

硬件体系结构 · 计算机科学 2019-10-09 Rahul Bera , Anant V. Nori , Onur Mutlu , Sreenivas Subramoney

Spectral-domain CNNs have been shown to be more efficient than traditional spatial CNNs in terms of reducing computation complexity. However they come with a `kernel explosion' problem that, even after compression (pruning), imposes a high…

硬件体系结构 · 计算机科学 2023-10-18 Yue Niu , Rajgopal Kannan , Ajitesh Srivastava , Viktor Prasanna

We present a software approach to mitigate access-driven side-channel attacks that leverage last-level caches (LLCs) shared across cores to leak information between security domains (e.g., tenants in a cloud). Our approach dynamically…

密码学与安全 · 计算机科学 2016-03-18 Ziqiao Zhou , Michael K. Reiter , Yinqian Zhang

New hardware primitives such as Intel SGX secure a user-level process in presence of an untrusted or compromised OS. Such "enclaved execution" systems are vulnerable to several side-channels, one of which is the page fault channel. In this…

密码学与安全 · 计算机科学 2016-01-13 Shweta Shinde , Zheng Leong Chua , Viswesh Narayanan , Prateek Saxena

Multi-GPU systems are becoming increasingly important in highperformance computing (HPC) and cloud infrastructure, providing acceleration for data-intensive applications, including machine learning workloads. These systems consist of…

密码学与安全 · 计算机科学 2025-03-25 Yicheng Zhang , Ravan Nazaraliyev , Sankha Baran Dutta , Andres Marquez , Kevin Barker , Nael Abu-Ghazaleh

With the rapidly increasing number of deployed LTE femtocell base stations (FBS), energy consumption of femtocell networks has become a serious environmental issue. Therefore, energy-efficient protocols are needed to balance the trade-off…

网络与互联网体系结构 · 计算机科学 2015-08-07 Ying Wang , Xiangming Dai , Jason Min Wang , Brahim Bensaou

On the Internet, sub-millisecond queueing delay and capacity-seeking have traditionally been considered mutually exclusive. We introduce a service that offers both: Low Latency Low Loss Scalable throughput (L4S). When tested under a wide…

网络与互联网体系结构 · 计算机科学 2022-09-05 Koen De Schepper , Olga Albisser , Olivier Tilmans , Bob Briscoe

This chapter focuses on the performance enhancement brought by the addition of caching capabilities to full-duplex (FD) radios in the context of ultra-dense networks (UDNs). More specifically, we aim at showing that the interference…

信息论 · 计算机科学 2020-04-09 Italo Atzeni , Marco Maso

Performance-enhancing mechanisms such as branch prediction, out-of-order execution, and return stack buffer (RSB) have been widely employed in today's modern processing units. Although successful in increasing the CPU performance,…

密码学与安全 · 计算机科学 2023-02-21 Farhad Taheri , Siavash Bayat-Sarmadi , Alireza Sadeghpour , Seyed Parsa Tayefeh Morsal

Shared-memory system-on-chips (SM-SoC) are ubiquitously employed by a wide-range of mobile computing platforms, including edge/IoT devices, autonomous systems and smartphones. In SM-SoCs, system-wide shared physical memory enables a…

密码学与安全 · 计算机科学 2025-02-11 Ismet Dagli , James Crea , Soner Seckiner , Yuanchao Xu , Selçuk Köse , Mehmet E. Belviranli

Operating Systems enforce logical isolation using abstractions such as processes, containers, and isolation technologies to protect a system from malicious or buggy code. In this paper, we show new types of side channels through the file…

密码学与安全 · 计算机科学 2025-04-29 Cheng Gu , Yicheng Zhang , Nael Abu-Ghazaleh

We propose a novel approach for performing side-channel attacks on elliptic curve cryptography. Unlike previous approaches and inspired by the ``activity detection'' literature, we adopt a long-short-term memory (LSTM) neural network to…

Graph processing is typically considered to be a memory-bound rather than compute-bound problem. One common line of thought is that more available memory bandwidth corresponds to better graph processing performance. However, in this work we…

分布式、并行与集群计算 · 计算机科学 2019-10-10 Oded Green , James Fox , Jeffrey Young , Jun Shirako , David Bader

Important memory-bound kernels, such as linear algebra, convolutions, and stencils, rely on SIMD instructions as well as optimizations targeting improved vectorized data traversal and data re-use to attain satisfactory performance. On on…

性能 · 计算机科学 2024-12-23 Miguel O. Blom , Kristian F. D. Rietveld , Rob V. van Nieuwpoort

Caches on the modern commodity CPUs have become one of the major sources of side-channel leakages and been abused as a new attack vector. To thwart the cache-based side-channel attacks, two types of countermeasures have been proposed:…

密码学与安全 · 计算机科学 2024-02-26 Jaehyuk Lee , Fan Sang , Taesoo Kim