MatlabMPI Software Summary

                    Dr. Jeremy Kepner
                  MIT Lincoln Laboratory

  MatlabMPI is a Matlab implementation of the Message Passing Interface
(MPI) standard and allows any Matlab program to exploit multiple
processors. MatlabMPI currently implements the basic MPI functions:

    MPI_Run        Runs a matlab script in parallel.
    MPI_Init       Initializes MatlabMPI.
    MPI_Comm_size  Gets number of processors in a communicator.
    MPI_Comm_rank  Gets rank of current processor within a communicator.
    MPI_Send       Sends a message to a processor (non-blocking).
    MPI_Recv       Receives message from a processor (blocking).
    MPI_Finalize   Cleans up at the end.
    MPI_Abort      Function to kill all matlab jobs started by MatlabMPI.
    MPI_Bcast      Broadcast a message (blocking).
    MPI_Probe      Returns a list of all incoming messages.

that are the core of the MPI point-to-point communications standard. The
key technical innovation of MatlabMPI is that it implements the widely
used MPI ``look and feel'' on top of standard Matlab file I/O, resulting
in an extremely compact (~200 lines) and ``pure'' implementation which
runs anywhere Matlab runs.  The performance has been tested on both
shared and distributed memory parallel computers.  MatlabMPI can match
the bandwidth of C based MPI at large message sizes. A test image
filtering application using MatlabMPI achieved a speedup of ~200 on a
parallel computer.