Time-predictable warp scheduling in a GPU

IF 2.6 4区计算机科学 Q3 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Microprocessors and Microsystems Pub Date : 2025-09-25 DOI:10.1016/j.micpro.2025.105203

Noïc Crouzet, Thomas Carle, Christine Rochange

引用次数: 0

Abstract

This paper presents architectural design solutions aimed at improving the timing predictability of GPU pipelines, with a particular focus on the behavior of hardware schedulers in the fetch and issue stages. We argue that without coordination between these schedulers at each cycle, the timing behavior of the GPU is unpredictable. We show how coordination can be enforced and prove that our solution achieves a predictable behavior. We have implemented it in a modified version of the open-source Vortex GPU, synthesized for an AMD Xilinx FPGA. We evaluate the overhead of the approach both in terms of FPGA resources and execution time.

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GPU中可预测时间的翘曲调度

本文提出了旨在提高GPU管道的时间可预测性的架构设计解决方案，特别关注硬件调度器在获取和发布阶段的行为。我们认为，如果在每个周期中这些调度器之间没有协调，GPU的定时行为是不可预测的。我们将展示如何执行协调，并证明我们的解决方案实现了可预测的行为。我们已经在开源Vortex GPU的修改版本中实现了它，该GPU是为AMD Xilinx FPGA合成的。我们从FPGA资源和执行时间两方面评估了该方法的开销。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Microprocessors and Microsystems 工程技术-工程：电子与电气

CiteScore

6.90

自引率

3.80%

发文量

204

审稿时长

172 days

期刊介绍： Microprocessors and Microsystems: Embedded Hardware Design (MICPRO) is a journal covering all design and architectural aspects related to embedded systems hardware. This includes different embedded system hardware platforms ranging from custom hardware via reconfigurable systems and application specific processors to general purpose embedded processors. Special emphasis is put on novel complex embedded architectures, such as systems on chip (SoC), systems on a programmable/reconfigurable chip (SoPC) and multi-processor systems on a chip (MPSoC), as well as, their memory and communication methods and structures, such as network-on-chip (NoC). Design automation of such systems including methodologies, techniques, flows and tools for their design, as well as, novel designs of hardware components fall within the scope of this journal. Novel cyber-physical applications that use embedded systems are also central in this journal. While software is not in the main focus of this journal, methods of hardware/software co-design, as well as, application restructuring and mapping to embedded hardware platforms, that consider interplay between software and hardware components with emphasis on hardware, are also in the journal scope.