Physis语言框架在WENO高阶数值格式异构计算中的应用

WENO(weighted essentially non-oscillatory)是计算流体力学中广泛采用的一种高阶数值格式。由于算法本身和异构计算编程的复杂性,需要开展异构计算代码自动生成的研究,以加速更多的应用。本文基于Physis这一领域编程语言框架,针对三维五阶WENO计算的天文应用,实现了其异构代码的自动生成。在超级计算机"元"上的测试结果表明,自动生成的异构计算代码具有良好的可扩展性,计算性能达到手工优化异构代码的72%,可为相关流体计算的异构代码生成提供借鉴。

Applications of Physis Language Framework to WENO Heterogeneous Computing

WENO(essentially non-oscillatory weighted) is a high order numerical scheme widely used in computational fluid dynamics.Because of the complexity of the algorithm itself and the complexity of heterogeneous computing programming, automatic generation of heterogeneous computing code is needed to speed up more applications.Based on the Physis programming language framework, we have realized the automatic generation of heterogeneous code of the 3D fifth-order WENO computing.The test results on the supercomputer ERA show that the automatic generation of heterogeneous computing code has a good scalability, and the computational performance achieved 72% of the manually optimized heterogeneous code.This study can provide a reference for the generation of heterogeneous code related to computational fluid dynamics.