@TechReport{Dartmouth:TR95-253,
  author = {Nils Nieuwejaar and David Kotz},
  title = {{Low-level Interfaces for High-level Parallel I/O}},
  institution = {Dartmouth College, Computer Science},
  address = {Hanover, NH},
  number = {PCS-TR95-253},
  year = {1995},
  month = {March},
  URL = {http://www.cs.dartmouth.edu/reports/TR95-253.ps.Z},
  comment = {
    This TR supercedes PCS-TR94-230.
    A result of the <A HREF="/~dfk/charisma.html">CHARISMA project</A>.
    Appeared in <A HREF="/iopads/iopads95/">IOPADS '95</A> at IPPS '95.
  },
  abstract = {
    As the I/O needs of parallel scientific applications increase, file
    systems for multiprocessors are being designed to provide applications
    with parallel access to multiple disks.  Many parallel file systems
    present applications with a conventional Unix-like interface that
    allows the application to access multiple disks transparently.  By
    tracing all the activity of a parallel file system in a production,
    scientific computing environment, we show that many applications
    exhibit highly regular, but non-consecutive I/O access patterns.
    Since the conventional interface does not provide an efficient method
    of describing these patterns, we present three extensions to the
    interface that support strided, nested-strided, and nested-batched I/O
    requests.  We show how these extensions can be used to express common
    access patterns.
  }
}