Wow, quite the feature list.

---------- Forwarded message ---------- From: Lisandro Dalcin dalcinl@gmail.com Date: Wed, Nov 8, 2017 at 6:31 AM Subject: [mpi4py] [ANN] mpi4py release 3.0.0 To: mpi4py mpi4py@googlegroups.com

• 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.

• Enhancements:

  • 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/

4700 King Abdullah University of Science and Technology al-Khawarizmi Bldg (Bldg 1), Office # 0109 Thuwal 23955-6900, Kingdom of Saudi Arabia http://www.kaust.edu.sa

Office Phone: +966 12 808-0459

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