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Nonuniformly Communicating Noncontiguous Data: A Case Study with PETSc and MPI

P. Balaji, D. Buntinas, S. Balay, B. Smith, R. Thakur, W. Gropp
2007 2007 IEEE International Parallel and Distributed Processing Symposium  
In this paper, we analyze the overheads associated with these two aspects (noncontiguous data layouts and nonuniform communication volumes) in the context of the PETSc software toolkit over the MPI communication  ...  However, this places additional overhead on the underlying communication library by making the data layout noncontiguous in memory and communication volumes (data transferred to each process) nonuniform  ...  Related Work There has been a lot of previous work on optimizing the performance of noncontiguous data transfers, including packing and unpacking techniques [4, 18, 7] and approaches to utilize intelligent  ... 
doi:10.1109/ipdps.2007.370223 dblp:conf/ipps/BalajiBBSTG07 fatcat:eltd33i6tja47e3fvyc4kvnz7a