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This paper summarizes the idea of Adaptive-Latency DRAM (AL-DRAM), which was published in HPCA 2015. The key goal of AL-DRAM is to exploit the extra margin that is built into the DRAM timing parameters to reduce DRAM latency. The key…

Hardware Architecture · Computer Science 2016-03-29 Donghyuk Lee , Yoongu Kim , Gennady Pekhimenko , Samira Khan , Vivek Seshadri , Kevin Chang , Onur Mutlu

Recent progresses in Josephson-junction-based superconducting circuits have propelled quantum information processing forward. However, the lack of a metastable state in most superconducting artificial atoms hinders the development of…

Sparse deep learning has reduced computation significantly, but its irregular non-zero data distribution complicates the data flow and hinders data reuse, increasing on-chip SRAM access and thus power consumption of the chip. This paper…

Hardware Architecture · Computer Science 2025-03-26 Kai-Chieh Hsu , Tian-Sheuan Chang

In our exploration of Composable Memory systems utilizing CXL, we focus on overcoming adoption barriers at Hyperscale, underscored by economic models demonstrating Total Cost of Ownership (TCO). While CXL addresses the pressing memory…

Emerging Technologies · Computer Science 2024-04-05 Angelos Arelakis , Nilesh Shah , Yiannis Nikolakopoulos , Dimitrios Palyvos-Giannas

We demonstrate a high-efficiency, free space optical delay line utilizing a nested multipass cell architecture. This design supports extended optical paths with low loss, aided by custom broadband dielectric coating that provides high…

Quantum Physics · Physics 2026-05-27 Yu Guo , Anindya Banerji , Jia Boon Chin , Arya Chowdhury , Alexander Ling

Superconducting digital Pulse-Conserving Logic (PCL) and Josephson SRAM (JSRAM) memory together enable scalable circuits with energy efficiency 100x beyond leading-node CMOS. Circuit designs support high throughput and low latency when…

Applied Physics · Physics 2023-05-17 Quentin Herr , Trent Josephsen , Anna Herr

Transformer-based models have emerged as one of the most widely used architectures for natural language processing, natural language generation, and image generation. The size of the state-of-the-art models has increased steadily reaching…

Hardware Architecture · Computer Science 2025-01-15 Rya Sanovar , Srikant Bharadwaj , Renee St. Amant , Victor Rühle , Saravan Rajmohan

Channel state information (CSI) at transmitter is crucial for massive MIMO downlink systems to achieve high spectrum and energy efficiency. Existing works have provided deep learning architectures for CSI feedback and recovery at the…

Signal Processing · Electrical Eng. & Systems 2022-04-21 Yu-Chien Lin , Ta-Sung Lee , Zhi Ding

Despite the parallel in-memory search capabilities of content addressable memories (CAMs), their use in applications is constrained by their limited resolution that worsens as they are scaled to larger arrays or advanced nodes. In this work…

Emerging Technologies · Computer Science 2025-05-06 Siri Narla , Steven J. Koester , Rebecca A. Dawley , Ageeth A. Bol , Piyush Kumar , Azad Naeemi

This paper investigates hardware-based memory compression designs to increase the memory bandwidth. When lines are compressible, the hardware can store multiple lines in a single memory location, and retrieve all these lines in a single…

Hardware Architecture · Computer Science 2018-07-23 Vinson Young , Sanjay Kariyappa , Moinuddin K. Qureshi

Superconducting electronics represents a promising technology, offering not only efficient integration with quantum computing systems, but also the potential for significant power reduction in high-performance computing. Nonetheless, the…

Superconductivity · Physics 2025-03-24 Leon Ruf , Angelo Di Bernardo , Elke Scheer

Hyperdimensional computing (HDC) is a brain-inspired computing paradigm based on high-dimensional holistic representations of vectors. It recently gained attention for embedded smart sensing due to its inherent error-resiliency and…

Signal Processing · Electrical Eng. & Systems 2021-02-05 Manuel Eggimann , Abbas Rahimi , Luca Benini

As the scaling of conventional CMOS-based technologies slows down, there is growing interest in alternative technologies that can improve performance or energy-efficiency. Superconducting circuits based on Josephson Junction (JJ) is an…

Hardware Architecture · Computer Science 2019-02-15 Swamit S. Tannu , Poulami Das , Michael L. Lewis , Robert Krick , Douglas M. Carmean , Moinuddin K. Qureshi

Tunable optical delay lines that simultaneously offer nanosecond-scale delay, broadband operation, low dispersion, and compact footprint remain challenging to realize with conventional integrated photonic platforms. Here we demonstrate a…

Optics · Physics 2026-02-06 Manuel Crespo-Ballesteros , Misha Sumetsky

SoCs are now designed with their own AI accelerator segment to accommodate the ever-increasing demand of Deep Learning (DL) applications. With powerful MAC engines for matrix multiplications, these accelerators show high computing…

Hardware Architecture · Computer Science 2023-11-15 Kaniz Mishty , Mehdi Sadi

Scalable memories that can match the speeds of superconducting logic circuits have long been desired to enable a superconducting computer. A superconducting loop that includes a Josephson junction can store a flux quantum state in…

Mesoscale and Nanoscale Physics · Physics 2020-09-30 Lei Chen , Lili Wu , Yue Wang , Yinping Pan , Denghui Zhang , Junwen Zeng , Xiaoyu Liu , Linxian Ma , Wei Peng , Yihua Wang , Jie Ren , Zhen Wang

Currently, progressively larger deep neural networks are trained on ever growing data corpora. As this trend is only going to increase in the future, distributed training schemes are becoming increasingly relevant. A major issue in…

Machine Learning · Computer Science 2018-05-23 Felix Sattler , Simon Wiedemann , Klaus-Robert Müller , Wojciech Samek

This paper presents 6T SRAM cell-based bit-parallel in-memory computing (IMC) architecture to support various computations with reconfigurable bit-precision. In the proposed technique, bit-line computation is performed with a short WL…

Hardware Architecture · Computer Science 2020-08-11 Kyeongho Lee , Jinho Jeong , Sungsoo Cheon , Woong Choi , Jongsun Park

Implantable Brain-machine interfaces (BMIs) are promising for motor rehabilitation and mobility augmentation, and they demand accurate and energy-efficient algorithms. In this paper, we propose a novel spiking neural network (SNN) decoder…

Signal Processing · Electrical Eng. & Systems 2024-05-06 Jiawei Liao , Oscar Toomey , Xiaying Wang , Lars Widmer , Cynthia A. Chestek , Luca Benini , Taekwang Jang

A content-addressable-memory compares an input search word against all rows of stored words in an array in a highly parallel manner. While supplying a very powerful functionality for many applications in pattern matching and search, it…

Emerging Technologies · Computer Science 2020-04-08 Can Li , Catherine E. Graves , Xia Sheng , Darrin Miller , Martin Foltin , Giacomo Pedretti , John Paul Strachan