GPU性能分析综述
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Overview of GPU Performance Analysis
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    摘要:

    随着图形处理器(graphics processing unit, GPU)在高性能计算、人工智能等领域的广泛应用, GPU性能分析的重要性愈加凸显. 然而, 由GPU的并行处理模型、复杂调度机制、多层级存储体系以及CPU-GPU异构通信等引发的问题, 使得相关性能分析异常困难. 本文首先回顾了GPU执行模型和面向GPU性能分析的屋顶线模型, 归纳给出了典型的GPU性能瓶颈. 通过梳理现有研究范式, 提出了一种以实现机制为纲、分析粒度与工具形态为目的GPU性能分析方法分类体系, 宏观上划分为基于硬件性能计数器的方法、基于微基准测试的方法、基于软件插桩的方法、基于模拟与建模的方法以及基于二进制插桩的方法这5类. 在此基础上, 重点讨论了各类方法及技术的优势与不足. 特别地, 以Neutrino为例, 分析揭示了传统工具无法观测微观调度行为的局限性. 最后, 总结当前GPU性能分析面临的挑战, 并指出下一代性能分析工具的发展方向即可编程、细粒度和智能化.

    Abstract:

    With the widespread application of graphics processing units (GPUs) in high-performance computing, artificial intelligence, and other fields, the importance of GPU performance analysis has become increasingly prominent. However, issues arising from GPUs’ parallel processing model, complex scheduling mechanisms, multi-level memory systems, and heterogeneous CPU-GPU communication make such performance analysis extremely difficult. This study first reviews the GPU execution model and the roofline model for GPU performance analysis and summarizes typical GPU performance bottlenecks. Based on a review of existing research paradigms, a classification system for GPU performance analysis methods is proposed, with implementation mechanisms as its guiding principle and analysis granularity and tool forms as its objectives. At the macro level, these methods are divided into five categories, including methods based on hardware performance counters, methods based on micro-benchmarks, methods based on software instrumentation, methods based on simulation and modeling, and methods based on binary instrumentation. On this basis, this study discusses the advantages and shortcomings of each type of method and technique. In particular, with Neutrino as an example, the analysis reveals the limitations of traditional tools in observing microscopic scheduling behavior. Finally, the current challenges faced by GPU performance analysis are summarized, and the development directions of next-generation performance analysis tools, including programmability, fine granularity, and intelligence, are identified.

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梁鑫妮,翟高寿. GPU性能分析综述.计算机系统应用,,():1-12

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  • 收稿日期:2026-04-23
  • 最后修改日期:2026-05-12
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  • 在线发布日期: 2026-08-21
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