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Abstract : |
We describe a software library for dynamic load balancing of finite element codes at run-time. The application code has to provide the current distributed mesh and information on the calculation and communication requirements, and receives from the library all necessary information to re-allocate the application data. The library computes a new partitioning, either via direct mesh migration or via parallel graph re-partitioning, by interfacing to the ParMetis package. In this paper, we discuss the underlying cost model and the various graph representations of the cost model that are implemented in the library. We describe the functionality of the DRAMA library and we present some first results. 1, |
