@InProceedings{lake:pario,
  author = {Brian Lake and Chris Gray},
  title = {Parallel {I/O} for {MIMD} Machines},
  booktitle = {Proceedings of SS'93: High Performance Computing},
  year = {1993},
  month = {June},
  pages = {301--308},
  address = {Calgary},
  keywords = {parallel I/O, MIMD, multiprocessor file system, pario-bib},
  comment = {They describe the I/O system for the Myrias SPS-3 parallel
  computer. The SPS is a no-remote-access (NORMA) machine with a software
  shared memory abstraction. They provide a standard C/FORTRAN I/O interface,
  with a few extensions. The user's parallel program is considered a client,
  and an I/O processor (IOP) is the server. No striping across IOPs, which
  makes it relatively simple for them to have the server manage the shared file
  pointer. Their extensions allow atomic, file-pointer update, returning the
  actual position where I/O occurred, and atomic access to fixed- and
  variable-length records. They have three protocols, for different transfer
  sizes; small using simple request/response; medium using sliding window; and
  large using scatter/gather and special hardware double buffering at the IOP.
  They use scatter/gather DMA, and page-table fiddling, for messaging.
  Performance is 89--96\% of hardware peak, limited by IOP's VME backplane.}
}