We are now feature complete for v2.0.0 and would appreciate testing by
developers and end users before we finalize the v2.0.0 release. In that
light, v2.0.0rc3 is now available:
https://www.open-mpi.org/software/ompi/v2.x/
Here are the changes since 2.0.0rc2:
- The MPI C++ bindings -- which were removed from the MPI standard in
v3.0 -- are no longer built by default and will be removed in some
future version of Open MPI. Use the --enable-mpi-cxx-bindings
configure option to build the deprecated/removed MPI C++ bindings.
--> NOTE: this is not new, actually -- but we just added it to the NEWS
file.
- In environments where mpirun cannot automatically determine the
number of slots available (e.g., when using a hostfile that does not
specify "slots", or when using --host without specifying a ":N"
suffix to hostnames), mpirun now requires the use of "-np N" to
specify how many MPI processes to launch.
- Many updates and fixes to the revamped memory hooks infrastructure
- Various configure-related compatibility updates for newer versions
of libibverbs and OFED.
- Properly detect Intel TrueScale and OmniPath devices in the ACTIVE
state. Thanks to Durga Choudhury for reporting the issue.
- Fix MPI_IREDUCE_SCATTER_BLOCK for a one-process communicator. Thanks
to Lisandro Dalcin for reporting.
- Fix detection and use of Solaris Studio 12.5 (beta) compilers.
Thanks to Paul Hargrove for reporting and debugging.
- Allow NULL arrays when creating empty MPI datatypes.
- Miscellaneous minor bug fixes in the hcoll component.
- Miscellaneous minor bug fixes in the ugni component.
- Fix various small memory leaks.
- Notable new MCA parameters:
- opal_progress_lp_call_ration: Control how often low-priority
callbacks are made during Open MPI's main progress loop.
- Disable backtrace support by default in the PSM/PSM2 libraries to
prevent unintentional conflicting behavior.
Thanks,
Howard
--
Howard Pritchard
HPC-DES
Los Alamos National Laboratory
