[mpich-announce] Announcing the availability of mpich-3.1

[Balaji, Pavan]

The MPICH team is pleased to announce the availability of a new stable
release (mpich-3.1).

This is a new major release that adds several capabilities including full
binary (ABI) compatibility with Intel MPI 5.0, an integrated MPICH-PAMID
code base for IBM BG/Q (contributed by IBM), several improvements to Intel
Xeon Phi (contributed by Intel and NEC), a major revamp of the MPI_T tools
interface, large improvements to one-sided communication in shared memory
environments, a number of improvements to mpiexec process binding
capabilities, various improvements to the support of large counts (more
than 2GB data), and a large number of bug fixes.

All production environments are encouraged to upgrade to this release.


More information about the release can be found on the MPICH website:

http://www.mpich.org

A list of changes in this release is included at the end of this email.

Regards,

The MPICH Team

===========================================================================
====
				Changes in 3.1
===========================================================================
====

 # Implement runtime compatibility with MPICH-derived implementations as
per
   the ABI Compatibility Initiative (see www.mpich.org/abi for more
   information).

 # Integrated MPICH-PAMI code base for Blue Gene/Q and other IBM
   platforms.

 # Several improvements to the SCIF netmod.  (code contribution from
   Intel).

 # Major revamp of the MPI_T interface added in MPI-3.

 # Added environment variables to control a lot more capabilities for
   collectives.  See the README.envvar file for more information.

 # Allow non-blocking collectives and fault tolerance at the same
   time. The option MPIR_PARAM_ENABLE_COLL_FT_RET has been deprecated as
   it is no longer necessary.

 # Improvements to MPI_WIN_ALLOCATE to internally allocate shared
   memory between processes on the same node.

 # Performance improvements for MPI RMA operations on shared memory
   for MPI_WIN_ALLOCATE and MPI_WIN_ALLOCATE_SHARED.

 # Enable shared library builds by default.

 # Upgraded hwloc to 1.8.

 # Several improvements to the Hydra-SLURM integration.

 # Several improvements to the Hydra process binding code.  See the
   Hydra wiki page for more information:
   http://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager

 # MPICH now supports operations on very large datatypes (those that
describe
   more than 32 bits of data).  This work also allows MPICH to fully
support
   MPI-3's introduction of MPI_Count.

 # Several other minor bug fixes, memory leak fixes, and code cleanup.

   A full list of changes is available at the following link:

     http://git.mpich.org/mpich.git/shortlog/v3.0.4..v3.1

   A full list of bugs that have been fixed is available at the
   following link:

     
https://trac.mpich.org/projects/mpich/query?status=closed&group=resolution&
milestone=mpich-3.1