面向对象数值软件Trilinos及其线性代数包剖析

分析研究了美国Sandia国家实验室Trilinos项目的设计思想、组织结构,该项目受到ASC计划等的资助.Trilinos框架中定义了一个线性代数对象模型,作为各种软件包的构建基础和沟通载体,此模型当前较成熟的实现为Epetra.详细地阐述了Epetra的组织设计和主要类的层次结构,通过两个数值实验考察该软件当前的性能.可以看到,以Trilinos为代表的众多数值计算项目,为各种数值软件的有效协作、集成和扩展所进行的努力和一些有价值的经验.

Research and analysis on object-oriented numerical software Trilinosand its linear algebra package

The Trilinos project is analyzed,which is sponsored by such official programs as ASC and being carried out at the Sandia na-tional laboratories in the USA.The ideas about the design and structural organization of Trilinos are discussed,and Epetra,the basic linear algebra package,is explained in particular.A linear algebra object model is established in the Trilinos framework,and acts as the foundation and bridge for communication of various numerical libraries,at present Epetra is the product implementation of this model.The design features of Epetra and its main class hierarchy are described in more detail.Finally some experiments are conducted and pre-sented to evaluate its performance.The Trilinos project is a representative effort among many numerical projects currently in progress,from which it is obvious that they have been endeavoring to effectively facilitate the collaboration,integration and scalability of a variety of numerical software.