Open MPI v2.1.2rc1 tarballs are available for testing at the usual place: https://www.open-mpi.org/software/ompi/v2.1/ There is an outstanding issue which will be fixed before the final release: https://github.com/open-mpi/ompi/issues/4069 but we wanted to get an rc1 out to see what else we may need to fix. Bug fixes/changes in this release include: - Remove IB XRC support from the OpenIB BTL due to loss of maintainer. - Fix a problem with MPI_IALLTOALLW when using zero-length messages. Thanks to Dahai Guo for reporting. - Fix a problem with C11 generic type interface for SHMEM_G. Thanks to Nick Park for reporting. - Switch to using the lustreapi.h include file when building Open MPI with Lustre support. - Fix a problem in the OB1 PML that led to hangs with OSU collective tests. - Fix a progression issue with MPI_WIN_FLUSH_LOCAL. Thanks to Joseph Schuchart for reporting. - Fix an issue with recent versions of PBSPro requiring libcrypto. Thanks to Petr Hanousek for reporting. - Fix a problem when using MPI_ANY_SOURCE with MPI_SENDRECV. - Fix an issue that prevented signals from being propagated to ORTE daemons. - Ensure that signals are forwarded from ORTE daemons to all processes in the process group created by the daemons. Thanks to Ted Sussman for reporting. - Fix a problem with launching a job under a debugger. Thanks to Greg Lee for reporting. - Fix a problem with Open MPI native I/O MPI_FILE_OPEN when using a communicator having an associated topology. Thanks to Wei-keng Liao for reporting. - Fix an issue when using MPI_ACCUMULATE with derived datatypes. - Fix a problem with Fortran bindings that led to compilation errors for user defined reduction operations. Thanks to Nathan Weeks for reporting. - Fix ROMIO issues with large writes/reads when using NFS file systems. - Fix definition of Fortran MPI_ARGV_NULL and MPI_ARGVS_NULL. - Enable use of the head node of a SLURM allocation on Cray XC systems. - Fix a problem with synchronous sends when using the UCX PML. - Use default socket buffer size to improve TCP BTL performance.
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