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Modern computing devices employ High-Bandwidth Memory (HBM) to meet their memory bandwidth requirements. An HBM-enabled device consists of multiple DRAM layers stacked on top of one another next to a compute chip (e.g. CPU, GPU, and FPGA)…

Hardware Architecture · Computer Science 2021-01-05 Seyed Saber Nabavi Larimi , Behzad Salami , Osman S. Unsal , Adrian Cristal Kestelman , Hamid Sarbazi-Azad , Onur Mutlu

Scaling Large Language Model (LLM) training relies on multi-dimensional parallelism, where High-Bandwidth Domains (HBDs) are critical for communication-intensive parallelism like Tensor Parallelism. However, existing HBD architectures face…

Networking and Internet Architecture · Computer Science 2025-08-05 Chenchen Shou , Guyue Liu , Hao Nie , Huaiyu Meng , Yu Zhou , Yimin Jiang , Wenqing Lv , Yelong Xu , Yuanwei Lu , Zhang Chen , Yanbo Yu , Yichen Shen , Yibo Zhu , Daxin Jiang

While homomorphic encryption (HE) provides strong privacy protection, its high computational cost has restricted its application to simple tasks. Recently, hyperdimensional computing (HDC) applied to HE has shown promising performance for…

Cryptography and Security · Computer Science 2025-11-04 Jaewoo Park , Chenghao Quan , Jongeun Lee

Sequence alignment is a memory bound computation whose performance in modern systems is limited by the memory bandwidth bottleneck. Processing-in-memory architectures alleviate this bottleneck by providing the memory with computing…

Hardware Architecture · Computer Science 2023-03-28 Safaa Diab , Amir Nassereldine , Mohammed Alser , Juan Gómez-Luna , Onur Mutlu , Izzat El Hajj

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…

Hardware Architecture · Computer Science 2024-03-15 Jeongmin Hong , Sungjun Cho , Geonwoo Park , Wonhyuk Yang , Young-Ho Gong , Gwangsun Kim

Inefficient data transfer between computation and memory inspired emerging processing-in-memory (PIM) technologies. Many PIM solutions enable storage and processing using memristors in a crossbar-array structure, with techniques such as…

Hardware Architecture · Computer Science 2021-05-11 Orian Leitersdorf , Ben Perach , Ronny Ronen , Shahar Kvatinsky

A large language model (LLM) is one of the most important emerging machine learning applications nowadays. However, due to its huge model size and runtime increase of the memory footprint, LLM inferences suffer from the lack of memory…

Hardware Architecture · Computer Science 2025-04-22 Soojin Hwang , Jungwoo Kim , Sanghyeon Lee , Hongbeen Kim , Jaehyuk Huh

Traditional machine learning depends on high-precision arithmetic and near-ideal hardware assumptions, which is increasingly challenged by variability in aggressively scaled semiconductor devices. Compute-in-memory (CIM) architectures…

Emerging Technologies · Computer Science 2026-04-15 William Youngwoo Chung , Hamza Errahmouni Barkam , Tamoghno Das , Mohsen Imani

The reference frame memory accesses in inter prediction result in high DRAM bandwidth requirement and power consumption. This problem is more intensive by the adoption of intra block copy (IBC), a new coding tool in the screen content…

Image and Video Processing · Electrical Eng. & Systems 2021-04-06 Jiyuan Hu , Jun Wang , Guangyu Zhong , Jian Cao , Ren Mao , Fan Liang

With the development of high-definition display devices, the practical scenario of Super-Resolution (SR) usually needs to super-resolve large input like 2K to higher resolution (4K/8K). To reduce the computational and memory cost, current…

Computer Vision and Pattern Recognition · Computer Science 2023-04-14 Senmao Tian , Ming Lu , Jiaming Liu , Yandong Guo , Yurong Chen , Shunli Zhang

RRAM-based in-Memory Computing is an exciting road for implementing highly energy efficient neural networks. This vision is however challenged by RRAM variability, as the efficient implementation of in-memory computing does not allow error…

Emerging Technologies · Computer Science 2019-02-08 Marc Bocquet , Tifenn Hirztlin , Jacques-Olivier Klein , Etienne Nowak , Elisa Vianello , Jean-Michel Portal , Damien Querlioz

Stream analytics have an insatiable demand for memory and performance. Emerging hybrid memories combine commodity DDR4 DRAM with 3D-stacked High Bandwidth Memory (HBM) DRAM to meet such demands. However, achieving this promise is…

Databases · Computer Science 2019-01-29 Hongyu Miao , Myeongjae Jeon , Gennady Pekhimenko , Kathryn S. McKinley , Felix Xiaozhu Lin

Memory performance is often the main bottleneck in modern computing systems. In recent years, researchers have attempted to scale the memory wall by leveraging new technology such as CXL, HBM, and in- and near-memory processing. Developers…

Performance · Computer Science 2024-11-20 Ashwin Poduval , Hayden Coffey , Michael Swift

Large language models (LLMs) face significant inference latency due to inefficiencies in GEMM operations, weight access, and KV cache access, especially in real-time scenarios. This highlights the need for a versatile compute-memory…

Hardware Architecture · Computer Science 2025-09-15 Huizheng Wang , Zichuan Wang , Zhiheng Yue , Yousheng Long , Taiquan Wei , Jianxun Yang , Yang Wang , Chao Li , Shaojun Wei , Yang Hu , Shouyi Yin

Large language models (LLMs) are central to modern natural language processing, delivering exceptional performance in various tasks. However, their substantial computational and memory requirements present challenges, especially for devices…

The proliferation of large language models (LLMs) with varying computational costs and performance profiles presents a critical challenge for scalable, cost-effective deployment in real-world applications. We introduce a unified routing…

High Bandwidth Memory with Processing-in-Memory (HBM-PIM) offers an opportunity to reduce data movement by executing computation directly inside memory, but current commercial platforms expose limited instruction sets and require…

Hardware Architecture · Computer Science 2026-05-01 Emanuele Venieri , Simone Manoni , Alberto Florian , Jaehyun Park , Kyomin Sohn , Andrea Bartolini

LLM cascades and model routing promise lower inference cost by sending easy queries to a small model and escalating hard ones to a large model, but most deployed routers use uncalibrated confidence scores and require per-workload threshold…

Machine Learning · Computer Science 2026-05-20 Varun Kotte

Large Language Model (LLM) inference is widely used in interactive assistants and agentic systems. In latency-sensitive deployments, inference time can become dominated by host-side overheads. Existing approaches typically expose this cost…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-03-16 Prabhu Vellaisamy , Shreesh Tripathi , Vignesh Natarajan , Surya Santhan Thenarasu , Shawn Blanton , John P. Shen

Reducing the threshold voltage of electronic devices increases their sensitivity to electromagnetic radiation dramatically, increasing the probability of changing the memory cells' content. Designers mitigate failures using techniques such…

Hardware Architecture · Computer Science 2023-07-14 David Freitas , David Mota , Clailton Lopes , Daniel Simões , Jarbas Silveira , João Mota , César Marcon