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Implications of a metric for performance portability

机译：指标对性能可移植性的影响

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The term “performance portability” has been informally used in computing to refer to a variety of notions which generally include: (1) the ability to run one application across multiple hardware platforms; and (2) achieving some notional level of performance on these platforms. However, there has been a noticeable lack of consensus on the precise meaning of the term, and authors’ conclusions regarding their success (or failure) to achieve performance portability have thus far been subjective. Comparing one approach to performance portability with another has generally been marked with vague claims and verbose, qualitative explanation of the comparison.This article presents a concise definition for performance portability and an associated metric that accurately capture the performance and portability of an application across different platforms. Through retroactive application of this metric to previous research and a review of numerous programming languages, frameworks and libraries, we devise and suggest tractable approaches to code specialization which can aid the community in developing highly performance-portable applications with minimal impact to productivity.
机译：“性能可移植性”一词在计算中被非正式地使用，以指代各种概念，这些概念通常包括：（1）在多个硬件平台上运行一个应用程序的能力； （2）在这些平台上达到某种名义上的性能水平。但是，人们对该术语的确切含义缺乏明显的共识，到目前为止，作者关于其成功（或失败）实现性能可移植性的结论是主观的。通常将一种性能可移植性方法与另一种方法进行性能比较，以模糊的声明和详细的定性说明进行比较。本文为性能可移植性提供了简洁的定义，以及一个相关的指标，可以准确地捕获跨平台的应用程序的性能和可移植性。通过将该指标追溯应用到以前的研究中，并回顾了众多编程语言，框架和库，我们设计并提出了易于处理的代码专业化方法，这些方法可以帮助社区开发对性能影响最小的高性能便携式应用程序。

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