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Published in:
2011 | OriginalPaper | Chapter
CAF versus MPI - Applicability of Coarray Fortran to a Flow Solver
Authors : Manuel Hasert, Harald Klimach, Sabine Roller
Published in: Recent Advances in the Message Passing Interface
Publisher: Springer Berlin Heidelberg
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We investigate how to use coarrays in Fortran (CAF) for parallelizing a flow solver and the capabilities of current compilers with coarray support. Usability and performance of CAF in mesh-based applications is examined and compared to traditional MPI strategies. We analyze the influence of the memory layout, the usage of communication buffers against direct access to the data used in the computation and different methods of the communication itself. Our objective is to provide insights on how common communication patterns have to be formulated when using coarrays.