EAGER: A Demonstration of the IMP Programming Model

用于科学计算的机器体系结构在规模和复杂性方面都在不断增长。软件没有跟上这种发展，应用程序代码经常使用多个并行模式和并行编程系统（通常是MPI和协处理器或线程库）来提取所有可能的性能。这使得除了最有经验的程序员之外，任何人都不必要地难以使用当前的体系结构。本项目研究当代超级计算机体系结构上的并行编程。该项目基于一种新的理论模型，称为并行综合模型（IMP），为这种混合设计开发了一个框架。最终的目标是开发一个产品软件系统，使领域科学家能够独立于底层超级计算机硬件编写应用程序。该项目创建了一个演示原型，一个n体动力学的“迷你应用程序”，一个包含n体应用程序中并行性基本结构的简化代码，用于演示IMP模型的原理。这个小应用程序可以运行，不变，使用不同类型的并行，为底层硬件量身定制。对于应用科学家来说，拥有这样一个软件系统意味着既比当前方法提高了生产力，又保证了相当的执行效率。

The machine architectures used for scientific computing are ever growing in scale and complexity. Software has not been keeping up with this development, and application codes often use multiple parallelism modes and parallel programming systems (typically MPI and a co-processor or threading library) to extract all possible performance. This makes current architectures unnecessarily hard to use for any but the most experienced programmers.This project addresses parallel programming on contemporary supercomputer architectures. Based on a new theoretical model, called the Integrative Model for Parallelism (IMP), this project develops a framework for such hybrid designs. Ultimately, the goal is to develop a production software system that allows domain scientists to write applications independently of the underlying supercomputer hardware. This project creates a demonstration prototype, a `mini-application' for N-body dynamics, a simplified code containing the essential structure of the parallelism in an N-body application, to be used for the demonstration of the principles of the IMP model. This mini-app can be run, unchanged, using different types of parallelism, tailored for the underlying hardware. Having such a software system implies for application scientists both increased productivity over current approaches, and a guarantee of comparable efficiency of execution.