Efficient Management of Parallelism in Object-Oriented Numerical Software Libraries
Satish Balay, William Gropp, Lois Curfman McInnes, Barry Smith · Birkhäuser Boston eBooks · 1997
Parallel numerical software based on the message passing model is enormously complicated. This paper introduces a set of techniques to manage the complexity, while maintaining high efficiency and ease of use. The PETSc 2.0 package uses object-oriented programming to conceal the details of the message passing, without concealing the parallelism, in a high-quality set of numerical software libraries. In fact, the programming model used by PETSc is also the most appropriate for NUMA shared-memory machines, since they require the same careful attention to memory hierarchies as do distributed-memory machines. Thus, the concepts discussed are appropriate for all scalable computing systems. The PETSc libraries provide many of the data structures and numerical kernels required for the scalable solution of PDEs, offering performance portability. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.