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3D NAND flash memory with advanced multi-level cell techniques provides high storage density, but suffers from significant performance degradation due to a large number of read-retry operations. Although the read-retry mechanism is…

Hardware Architecture · Computer Science 2021-04-21 Jisung Park , Myungsuk Kim , Myoungjun Chun , Lois Orosa , Jihong Kim , Onur Mutlu

Software caches are an intrinsic component of almost every computer system. Consequently, caching algorithms, particularly eviction policies, are the topic of many papers. Almost all these prior papers evaluate the caching algorithm based…

Performance · Computer Science 2024-11-19 Ziyue Qiu , Juncheng Yang , Mor Harchol-Balter

DRAM is the prevalent main memory technology, but its long access latency can limit the performance of many workloads. Although prior works provide DRAM designs that reduce DRAM access latency, their reduced storage capacities hinder the…

Hardware Architecture · Computer Science 2020-05-27 Haocong Luo , Taha Shahroodi , Hasan Hassan , Minesh Patel , Abdullah Giray Yaglikci , Lois Orosa , Jisung Park , Onur Mutlu

The Rowhammer vulnerability continues to get worse, with the Rowhammer Threshold (TRH) reducing from 139K activations to 4.8K activations over the last decade. Typical Rowhammer mitigations rely on tracking aggressor rows. The number of…

Cryptography and Security · Computer Science 2023-11-08 Anish Saxena , Moinuddin Qureshi

Caching plays a crucial role in networking systems to reduce the load on the network and is commonly employed by content delivery networks (CDNs) in order to improve performance. One of the commonly used mechanisms, Least Recently Used…

Networking and Internet Architecture · Computer Science 2019-06-25 Eric Friedlander , Vaneet Aggarwal

The growing adoption of Electric Buses (EBs) represents a significant step toward sustainable development. By utilizing Internet of Things (IoT) systems, charging stations can autonomously determine charging schedules based on real-time…

Machine Learning · Computer Science 2025-05-16 Jiaju Qi , Lei Lei , Thorsteinn Jonsson , Dusit Niyato

The time average expected age of information (AoI) is studied for status updates sent over an error-prone channel from an energy-harvesting transmitter with a finite-capacity battery. Energy cost of sensing new status updates is taken into…

Information Theory · Computer Science 2021-07-01 Elif Tugce Ceran , Deniz Gunduz , Andras Gyorgy

Over the last decade, the Age of Information has emerged as a key concept and metric for applications where the freshness of sensor-provided data is critical. Limited transmission capacity has motivated research on the design of tractable…

Optimization and Control · Mathematics 2026-01-21 José Niño-Mora

This article introduces a novel family of decentralised caching policies, applicable to wireless networks with finite storage at the edge-nodes (stations). These policies are based on the Least-Recently-Used replacement principle, and are,…

Performance · Computer Science 2016-06-22 Anastasios Giovanidis , Apostolos Avranas

Recently, a novel class of Approximate Policy Iteration (API) algorithms have demonstrated impressive practical performance (e.g., ExIt from [2], AlphaGo-Zero from [27]). This new family of algorithms maintains, and alternately optimizes,…

Machine Learning · Computer Science 2019-04-09 Wen Sun , Geoffrey J. Gordon , Byron Boots , J. Andrew Bagnell

Freshness of data is an important performance metric for real-time applications, which can be measured by age-of-information. For computation-intensive messages, the embedded information is not available until being computed. In this paper,…

Information Theory · Computer Science 2019-01-16 Jie Gong , Qiaobin Kuang , Xiang Chen , Xiao Ma

Rate splitting (RS) and wireless edge caching are essential means for meeting the quality of service requirements of future wireless networks. In this work, we focus on the cross-layer co-design of wireless edge caching schemes with…

Signal Processing · Electrical Eng. & Systems 2021-10-27 Eleni Demarchou , Constantinos Psomas , Ioannis Krikidis

Efficient retrieval of information is of key importance when using Big Data systems. In large scale-out data architectures, data are distributed and replicated across several machines. Queries/tasks to such data architectures, are sent to a…

Extended Asynchronous DRAM Refresh (eADR) proposed by Intel extends the persistence domain from the Non-Volatile Memory (NVM) to CPU caches and offers the persistence guarantee. Due to allowing lazy persistence and decreasing the amounts of…

Cryptography and Security · Computer Science 2023-07-06 Jianming Huang , Yu Hua

The ability to reuse previous policies is an important aspect of human intelligence. To achieve efficient policy reuse, a Deep Reinforcement Learning (DRL) agent needs to decide when to reuse and which source policies to reuse. Previous…

Artificial Intelligence · Computer Science 2022-10-18 Jin Zhang , Siyuan Li , Chongjie Zhang

A key practical constraint on the design of Hybrid automatic repeat request (HARQ) schemes is the size of the on-chip buffer that is available at the receiver to store previously received packets. In fact, in modern wireless standards such…

Information Theory · Computer Science 2015-04-01 Wonju Lee , Osvaldo Simeone , Joonhyuk Kang , Sundeep Rangan , Petar Popovski

We consider elastic resource provisioning in the cloud, focusing on in-memory key-value stores used as caches. Our goal is to dynamically scale resources to the traffic pattern minimizing the overall cost, which includes not only the…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-02-14 Damiano Carra , Giovanni Neglia , Pietro Michiardi

As memory technologies continue to shrink and memory error rates increase, the demand for stronger reliability becomes increasingly critical. Fine-grain memory replication has emerged as an appealing approach to improving memory fault…

Hardware Architecture · Computer Science 2025-02-25 Haris Volos , Yiannakis Sazeides

Processing-in-memory (PIM) seeks to eliminate computation/memory data transfer using devices that support both storage and logic. Stateful logic techniques such as IMPLY, MAGIC and FELIX can perform logic gates within memristive crossbar…

Hardware Architecture · Computer Science 2021-09-21 Orian Leitersdorf , Ronny Ronen , Shahar Kvatinsky

Improvements in main memory storage density are primarily driven by process technology scaling, which negatively impacts reliability by exacerbating various circuit-level error mechanisms. To compensate for growing error rates, both memory…

Hardware Architecture · Computer Science 2022-04-25 Minesh Patel