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User Migration Guide: 1.8.x and v1.10.x to v2.0.0
Brice Goglin edited this page May 2, 2016
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Users should not treat this wiki page as definitive (YET). Please check back later.
I.e., things that may prevent users from simply re-compiling / re-mpirun'ing their existing MPI app.
- mpirun -np behavior
- OMPIO is now the default (not ROMIO)
- MPI C++ bindings are disabled by default
- ...more?
- Launch scalability improvements (i.e., support for PMIx)
- Lots of improvements to MPI RMA
- Improved support for MPI_THREAD_MULTIPLE (when configured with
--enable-mpi-thread-multiple
) - ompi_info pretty print improvements
- UCX support
- PLFS support (via OMPIO)
- Better Cray build / SLURM support
- ...more?
- OS X Leopard
- Cray XT
- VampirTrace
- Myrinet MX / Open-MX
- coll:ml module
- Alpha processors
- --enable-mpi-profiling option
- Checkpoint / restart
- ...more?