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Reconfigurable architectures, such as FPGAs, enable the execution of code at the electronics level, avoiding the assumptions imposed by the general purpose black-box micro-architectures of CPUs and GPUs. Such tailored execution can result…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-07-29 Nick Brown

CPU-based inference can be an alternative to off-chip accelerators, and vector architectures are a promising option due to their efficiency. However, the large design space of convolutional algorithms and hardware implementations makes it…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-12-23 Sonia Rani Gupta , Nikela Papadopoulou , Miquel Pericas

Low bit-width Quantized Neural Networks (QNNs) enable deployment of complex machine learning models on constrained devices such as microcontrollers (MCUs) by reducing their memory footprint. Fine-grained asymmetric quantization (i.e.,…

Hardware Architecture · Computer Science 2020-10-09 Gianmarco Ottavi , Angelo Garofalo , Giuseppe Tagliavini , Francesco Conti , Luca Benini , Davide Rossi

Hardware technological advances are struggling to match scientific ambition, and a key question is how we can use the transistors that we already have more effectively. This is especially true for HPC, where the tendency is often to throw…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-11-11 Nick Brown

Integrating compute express link (CXL) with SSDs allows scalable access to large memory but has slower speeds than DRAMs. We present ExPAND, an expander-driven CXL prefetcher that offloads last-level cache (LLC) prefetching from host CPU to…

Fast and energy-efficient low-bitwidth floating-point (FP) arithmetic is essential for Artificial Intelligence (AI) systems. Microscaling (MX) standardized formats have recently emerged as a promising alternative to baseline low-bitwidth FP…

Hardware Architecture · Computer Science 2025-05-20 Gamze İslamoğlu , Luca Bertaccini , Arpan Suravi Prasad , Francesco Conti , Angelo Garofalo , Luca Benini

Considering the high-performance and low-power requirements of edge AI, this study designs a specialized instruction set processor for edge AI based on the RISC-V instruction set architecture, addressing practical issues in digital signal…

Hardware Architecture · Computer Science 2024-09-04 Xu-Hao Chen , Si-Peng Hu , Hong-Chao Liu , Bo-Ran Liu , Dan Tang , Di Zhao

Recent works showed that implementations of Quicksort using vector CPU instructions can outperform the non-vectorized algorithms in widespread use. However, these implementations are typically single-threaded, implemented for a particular…

Information Retrieval · Computer Science 2022-05-13 Mark Blacher , Joachim Giesen , Peter Sanders , Jan Wassenberg

The sparse matrix-vector product (SpMV) is a fundamental operation in many scientific applications from various fields. The High Performance Computing (HPC) community has therefore continuously invested a lot of effort to provide an…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-05-14 Berenger Bramas , Pavel Kus

This work introduces lightweight extensions to the RISC-V ISA to boost the efficiency of heavily Quantized Neural Network (QNN) inference on microcontroller-class cores. By extending the ISA with nibble (4-bit) and crumb (2-bit) SIMD…

Hardware Architecture · Computer Science 2020-12-01 Angelo Garofalo , Giuseppe Tagliavini , Francesco Conti , Luca Benini , Davide Rossi

SSE (streaming SIMD extensions) and AVX (advanced vector extensions) are SIMD (single instruction multiple data streams) instruction sets supported by recent CPUs manufactured in Intel and AMD. This SIMD programming allows parallel…

High Energy Physics - Lattice · Physics 2013-11-05 Hwancheol Jeong , Sunghoon Kim , Weonjong Lee , Seok-Ho Myung

This paper introduces NeCTAr (Near-Cache Transformer Accelerator), a 16nm heterogeneous multicore RISC-V SoC for sparse and dense machine learning kernels with both near-core and near-memory accelerators. A prototype chip runs at 400MHz at…

Hardware Architecture · Computer Science 2025-03-20 Viansa Schmulbach , Jason Kim , Ethan Gao , Lucy Revina , Nikhil Jha , Ethan Wu , Borivoje Nikolic

To reduce the area of RISC-V Vector extension (RVV) in small processors, the authors are considering one simple modification: reduce the number of registers in the vector register file. The standard 'V' extension requires 32 vector…

Hardware Architecture · Computer Science 2024-10-14 Eino Jacobs , Dmitry Utyansky , Muhammad Hassan , Thomas Roecker

The emergence and rapid development of the open RISC-V instruction set architecture opens up new horizons on the way to efficient devices, ranging from existing low-power IoT boards to future high-performance servers. The effective use of…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-04 Evgeny Kozinov , Evgeny Vasiliev , Andrey Gorshkov , Valentina Kustikova , Artem Maklaev , Valentin Volokitin , Iosif Meyerov

The latest video coding standard H.266/VVC has shown its great improvement in terms of compression performance when compared to its predecessor HEVC standard. Though VVC was implemented with many advanced techniques, it still met the same…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Xiem HoangVan , Hieu Bui Minh , Sang NguyenQuang , Wen-Hsiao Peng

RISC-V, an open instruction set architecture, is getting the attention of soft processor developers. Implementing only a basic 32-bit integer instruction set of RISC-V, which is defined as RV32I, might be satisfactory for embedded systems.…

Hardware Architecture · Computer Science 2020-11-02 Md Ashraful Islam , Hiromu Miyazaki , Kenji Kise

Acceleration of Convolutional Neural Network (CNN) on edge devices has recently achieved a remarkable performance in image classification and object detection applications. This paper proposes an efficient and scalable CNN-based SoC-FPGA…

Hardware Architecture · Computer Science 2022-07-29 Azzam Alhussain , Mingjie Lin

We present our experience with the modernization on the GR-MHD code BHAC, aimed at improving its novel hybrid (MPI+OpenMP) parallelization scheme. In doing so, we showcase the use of performance profiling tools usable on x86 (Intel-based)…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-08-30 Salvatore Cielo , Oliver Porth , Luigi Iapichino , Anupam Karmakar , Hector Olivares , Chun Xia

The substantial memory requirements of Large Language Models (LLMs), particularly for long-context fine-tuning, have renewed interest in CPU offloading to augment limited GPU memory. However, as context lengths grow, relying on CPU memory…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-10-31 Yong-Cheng Liaw , Shuo-Han Chen

Recent applications in the domain of near-sensor computing require the adoption of floating-point arithmetic to reconcile high precision results with a wide dynamic range. In this paper, we propose a multi-core computing cluster that…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-06-12 Fabio Montagna , Stefan Mach , Simone Benatti , Angelo Garofalo , Gianmarco Ottavi , Luca Benini , Davide Rossi , Giuseppe Tagliavini