The Open MPI Team, representing a consortium of research, academic, and industry partners, is pleased to announce the release of Open MPI version 4.0.1.
v4.0.1 is a bug fix release that includes a variety of bug fixes and some performance fixes. All users are encouraged to upgrade to v4.0.1 when possible. Version 4.0.1 can be downloaded from the main Open MPI web site: https://www.open-mpi.org/software/ompi/v4.0/ NEWS 4.0.1 -- March, 2019 -------------------- - Update embedded PMIx to 3.1.2. - Fix an issue with Vader (shared-memory) transport on OS-X. Thanks to Daniel Vollmer for reporting. - Fix a problem with the usNIC BTL Makefile. Thanks to George Marselis for reporting. - Fix an issue when using --enable-visibility configure option and older versions of hwloc. Thanks to Ben Menadue for reporting and providing a fix. - Fix an issue with MPI_WIN_CREATE_DYNAMIC and MPI_GET from self. thanks to Bart Janssens for reporting. - Fix an issue of excessive compiler warning messages from mpi.h when using newer C++ compilers. Thanks to @Shadow-fax for reporting. - Fix a problem when building Open MPI using clang 5.0. - Fix a problem with MPI_WIN_CREATE when using UCX. Thanks to Adam Simpson for reporting. - Fix a memory leak encountered for certain MPI datatype destructor operations. Thanks to Axel Huebl for reporting. - Fix several problems with MPI RMA accumulate operations. Thanks to Jeff Hammond for reporting. - Fix possible race condition in closing some file descriptors during job launch using mpirun. Thanks to Jason Williams for reporting and providing a fix. - Fix a problem in OMPIO for large individual write operations. Thanks to Axel Huebl for reporting. - Fix a problem with parsing of map-by ppr options to mpirun. Thanks to David Rich for reporting. - Fix a problem observed when using the mpool hugepage component. Thanks to Hunter Easterday for reporting and fixing. - Fix valgrind warning generated when invoking certain MPI Fortran data type creation functions. Thanks to @rtoijala for reporting. - Fix a problem when trying to build with a PMIX 3.1 or newer release. Thanks to Alastair McKinstry for reporting. - Fix a problem encountered with building MPI F08 module files. Thanks to Igor Andriyash and Axel Huebl for reporting. - Fix two memory leaks encountered for certain MPI-RMA usage patterns. Thanks to Joseph Schuchart for reporting and fixing. - Fix a problem with the ORTE rmaps_base_oversubscribe MCA paramater. Thanks to @iassiour for reporting. - Fix a problem with UCX PML default error handler for MPI communicators. Thanks to Marcin Krotkiewski for reporting. - Fix various issues with OMPIO uncovered by the testmpio test suite. Thanks, Your Open MPI release team
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