@InProceedings{liao:overlapping,
  author = {Wei-keng Liao and Alok Choudhary and Kenin Coloma and Lee Ward and
  Eric Russell and Neil Pundit},
  title = {Scalable implementations of {MPI} atomicity for concurrent
  overlapping {I/O}},
  booktitle = {Proceedings of the 2003 International Conference on Parallel
  Processing},
  editor = {Sadayappan, P; Yang, CS},
  year = {2003},
  month = {October},
  pages = {239--246},
  institution = {Northwestern Univ, ECE Dept, Evanston, IL 60208 USA},
  publisher = {IEEE Computer Society Press},
  copyright = {(c)2005 The Thomson Corporation},
  address = {Kaohsiung, Taiwan},
  keywords = {MPI, concurrent I/O operations, overlapping write access, atomic
  I/O operations, pario-bib},
  abstract = {For concurrent I/O operations, atomicity defines the results in
  the overlapping file regions simultaneously read/written by requesting
  processes. Atomicity has been well studied at the file system level, such as
  POSIX standard. In this paper, we investigate the problems arising from the
  implementation of MPI atomicity for concurrent overlapping write access and
  provide two programming solutions. Since the MPI definition of atomicity
  differs from the POSIX one, an implementation that simply relies on the POSIX
  file systems does not guarantee correct MPI semantics. To have a correct
  implementation of atomic I/O in MPI, we examine the efficiency of three
  approaches: 1) file locking, 2) graph-coloring, and 3) process-rank ordering.
  Performance complexity for these methods are analyzed and their experimental
  results are presented for file systems including NFS, SGI's XFS, and IBM's
  GPFS.}
}