Playa: High-Performance Programmable Linear Algebra
Victoria E. Howle, Robert C. Kirby, Kevin R. Long, Brian Brennan, Kimberly R Kennedy · Scientific Programming · 2012
This paper introduces Playa, a high-level user interface layer for composing algorithms for complex multiphysics problems out of objects from other Trilinos packages. Among other features, Playa provides very high-performance overloaded operators implemented through an expression template mechanism. In this paper, we give an overview of the central Playa objects from a user's perspective, show application to a sequence of increasingly complex solver algorithms, provide timing results for Playa's overloaded operators and other functions, and briefly survey some of the implementation issues involved.