Optimizing Program Performance at Link and Run-Time

ACI-9720738Debray该项目将开发链接时和运行时技术，以提高科学程序的性能。总体目标是提高现有代码和新代码的性能，无论是哪种源编程语言、算法、应用程序或目标体系结构。这个项目考虑如何构建高级科学计划的链接时和运行时优化工具。具体地说，主要研究了以下几个方面：1.链接时间程序分析。该项目将开发有效和有用的全程序分析技术，旨在将分析工作集中在程序组件上，这些组件的分析和/或优化可有助于程序性能的切实改进。链接时的全程序优化。该项目将调查可执行程序的优化，使用经典技术，如应用于库代码的内联，以及旨在利用底层硬件的特定特征的优化。运行时优化。该项目还将研究依赖于在应用程序执行时计算的值的优化；这些优化包括影响并行应用程序中的并发量以及如何实现通信和同步的优化。

ACI-9720738Debray This project will develop link-time and run-time techniques for improving the performance of scientific programs. The overall goal is to increase the performance of both existing and new codes, whatever the source programming language, algorithm, application, or target architectures. This project considers how tools for link-time and run-time optimization of advanced scientific programs can be constructed. Specifically, the following topics are investigated:1. Link-time program analysis. The project will develop techniques for efficient and useful whole-program analysis, aimed at focusing the analysis effort on program components whose analysis and/or optimization can contribute to tangible improvements in program performance.2. Whole-program optimization at link time. The project will investigate optimizations of executable programs, using classical techniques such as inlining applied to library code, as well as optimizations aimed at exploiting specific characteristics of the underlying hardware.3. Run-time optimization. The project will also investigate optimizations that depend on values that are computed while an application executes; these include optimizations that effect the amount of concurrency in a parallel application as well as how communication and synchronization are realized.