View-Based Collective I/O for MPI-IO

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View-Based Collective I/O for MPI-IO
This paper presents the design and implementation of a new file system independent collective I/O optimization based on file views: view-based collective I/O. View-based collective I/O has been implemented and evaluated inside ROMIO implementation of MPI-IO standard. The evaluation section shows that view-based I/O outperforms the original two-phase collective I/O from ROMIO in most of the cases for three well-known parallel I/O benchmarks. This is especially due to a smaller cost of scatter/gather operations, a reduction of the metadata overhead, and a smaller number of collective communication and synchronization primitives used in the implementation.
Francisco Javier García Blas, Florin Isaila
Added 12 Oct 2010
Updated 12 Oct 2010
Type Conference
Year 2008
Authors Francisco Javier García Blas, Florin Isaila, David E. Singh, Jesús Carretero
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