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.

• Type: Conference
• Year: 2008
• Where: CCGRID
• Authors: Francisco Javier García Blas, Florin Isaila, David E. Singh, Jesús Carretero
• Keywords: CCGRID 2008, Collective I/o, Collective I/o Optimization, Distributed And Parallel Computing, View-based Collective I/o