Improving the Performance of MPI Derived Datatypes

  title={Improving the Performance of MPI Derived Datatypes},
  author={William D. Gropp and E. Lusk and Debbie Swider},
The Message Passing Interface (MPI) standard provides a powerful mechanism for describing non-contiguousmemory locations: derived datatypes. In addition, MPI derived datatypes have a key role in the MPI-2 I/O operations. In principle, MPI derived datatypes allow a user to more efficiently communicate noncontiguous data (for example, strided data) because the MPI implementation can move the data without any intermediate copies to or from a contiguous buffer. In practice, however, few MPI… CONTINUE READING
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