@TechReport{sanders:datatypes,
  author = {Darren Sanders and Yoonho Park and Maciej Brodowicz},
  title = {Implementation and performance of {MPI-IO} file access using {MPI}
  datatypes},
  year = {1996},
  month = {November},
  number = {UH-CS-96-12},
  institution = {University of Houston},
  URL = {http://www.hpc.uh.edu/cenju/pub/mpio.ps},
  keyword = {parallel I/O, multiprocessor file system interface, pario-bib},
  abstract = {In this paper we document our experience implementing MPI-IO file
  access using MPI datatypes. We present performance results and discuss two
  significant problems that stem from the flexibility of MPI datatypes. First,
  MPI datatypes can be used to specify non-contiguous access patterns.
  Optimizing data transfers for such patterns is difficult. Second, the
  behavior of MPI datatypes in a heterogenous environment is not well-defined.}
}