The Open MPI Team, representing a consortium of research, academic,
and industry partners, is pleased to announce the release of Open MPI
version 1.3.1. This release is mainly a bug fix release over the v1.3.0
release, but there are few new features.  We strongly recommend
that all users upgrade to version 1.3.1 if possible.

Version 1.3.1 can be downloaded from the main Open MPI web site or
any of its mirrors (mirrors will be updating shortly).

Here is a list of changes in v1.3.1 as compared to v1.3.0:

- Added "sync" coll component to allow users to synchronize every N
  collective operations on a given communicator.
- Increased the default values of the IB and RNR timeout MCA parameters.
- Fix a compiler error noted by Mostyn Lewis with the PGI 8.0 compiler.
- Fix an error that prevented stdin from being forwarded if the
  rsh launcher was in use.  Thanks to Branden Moore for pointing out
  the problem.
- Correct a case where the added datatype is considered as contiguous but
  has gaps in the beginning.
- Fix an error that limited the number of comm_spawns that could
  simultaneously be running in some environments
- Correct a corner case in OB1's GET protocol for long messages; the
  error could sometimes cause MPI jobs using the openib BTL to hang.
- Fix a bunch of bugs in the IO forwarding (IOF) subsystem and add some
new options to output to files and redirect output to xterm. Thanks to
  Jody Weissmann for helping test out many of the new fixes and
- Fix SLURM race condition.
- Fix MPI_File_c2f(MPI_FILE_NULL) to return 0, not -1.  Thanks to
  Lisandro Dalcin for the bug report.
- Fix the DSO build of tm PLM.
- Various fixes for size disparity between C int's and Fortran
  INTEGER's.  Thanks to Christoph van Wullen for the bug report.
- Ensure that mpirun exits with a non-zero exit status when daemons or
  processes abort or fail to launch.
- Various fixes to work around Intel (NetEffect) RNIC behavior.
- Various fixes for mpirun's --preload-files and --preload-binary
- Fix the string name in MPI::ERRORS_THROW_EXCEPTIONS.
- Add ability to forward SIFTSTP and SIGCONT to MPI processes if you
  set the MCA parameter orte_forward_job_control to 1.
- Allow the sm BTL to allocate larger amounts of shared memory if
  desired (helpful for very large multi-core boxen).
- Fix a few places where we used PATH_MAX instead of OMPI_PATH_MAX,
  leading to compile problems on some platforms.  Thanks to Andrea Iob
  for the bug report.
- Fix mca_btl_openib_warn_no_device_params_found MCA parameter; it
  was accidentally being ignored.
- Fix some run-time issues with the sctp BTL.
- Ensure that RTLD_NEXT exists before trying to use it (e.g., it
  doesn't exist on Cygwin).  Thanks to Gustavo Seabra for reporting
  the issue.
- Various fixes to VampirTrace, including fixing compile errors on
  some platforms.
- Fixed missing MPI_Comm_accept.3 man page; fixed minor issue in
  orterun.1 man page.  Thanks to Dirk Eddelbuettel for identifying the
  problem and submitting a patch.
- Implement the XML formatted output of stdout/stderr/stddiag.
- Fixed mpirun's -wdir switch to ensure that working directories for
  multiple app contexts are properly handled.  Thanks to Geoffroy
  Pignot for reporting the problem.
- Improvements to the MPI C++ integer constants:
  - Allow MPI::SEEK_* constants to be used as constants
  - Allow other MPI C++ constants to be used as array sizes
- Fix minor problem with orte-restart's command line options.  See
  ticket #1761 for details.  Thanks to Gregor Dschung for reporting
  the problem.

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