*Wow*, quite the feature list.
* New features:
+ `mpi4py.futures`: Execute computations asynchronously using a pool of MPI processes. This package is based on ``concurrent.futures`` from the Python standard library. + `mpi4py.run`: Run Python code and abort execution in case of unhandled exceptions to prevent deadlocks. + `mpi4py.bench`: Run basic MPI benchmarks and tests.
+ Lowercase, pickle-based collective communication calls are now thread-safe through the use of fine-grained locking. + The ``MPI`` module now exposes a ``memory`` type which is a lightweight variant of the builtin ``memoryview`` type, but exposes both the legacy Python 2 and the modern Python 3 buffer interface under a Python 2 runtime. + The ``MPI.Comm.Alltoallw()`` method now uses ``count=1`` and ``displ=0`` as defaults, assuming that messages are specified through user-defined datatypes. + The ``Request.Wait[all]()`` methods now return ``True`` to match the interface of ``Request.Test[all]()``. + The ``Win`` class now implements the Python buffer interface.
* Backward-incompatible changes:
+ The ``buf`` argument of the ``MPI.Comm.recv()`` method is deprecated, passing anything but ``None`` emits a warning. + The ``MPI.Win.memory`` property was removed, use the ``MPI.Win.tomemory()`` method instead. + Executing ``python -m mpi4py`` in the command line is now equivalent to ``python -m mpi4py.run``. For the former behavior, use ``python -m mpi4py.bench``. + Python 2.6 and 3.2 are no longer supported. The ``mpi4py.MPI`` module may still build and partially work, but other pure-Python modules under the ``mpi4py`` namespace will not. + Windows: Remove support for legacy MPICH2, Open MPI, and DeinoMPI.
-- Lisandro Dalcin ============ Research Scientist Computer, Electrical and Mathematical Sciences & Engineering (CEMSE) Extreme Computing Research Center (ECRC) King Abdullah University of Science and Technology (KAUST) http://ecrc.kaust.edu.sa/
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