The Open MPI Team, representing a consortium of research, academic, and 
industry partners, is pleased to announce the release of Open MPI version 

Open MPI v2.1.5 is a critical bug fix release, and is likely the last release 
in the v2.1.x series (we released v2.1.4 a week ago, and thought that would be 
the end of the v2.1.x series, but a serious shared memory bug was found 
immediately after the v2.1.4 release).

Open MPI v2.1.5 is only recommended for those who are still running Open MPI 
v2.0.x or v2.1.x, and can be downloaded from the Open MPI web site:

Open MPI v2.1.5 only fixed two issues:

- A subtle race condition bug was discovered in the "vader" BTL
  (shared memory communications) that, in rare instances, can cause
  MPI processes to crash or incorrectly classify (or effectively drop)
  an MPI message sent via shared memory.  If you are using the "ob1"
  PML with "vader" for shared memory communication (note that vader is
  the default for shared memory communication with ob1), you need to
  upgrade to v2.1.5 to fix this issue.  You may also upgrade to the
  following versions to fix this issue:
  - Open MPI v3.0.1 (released March, 2018) or later in the v3.0.x
  - Open MPI v3.1.2 (expected end of August, 2018) or later
- A link issue was fixed when the UCX library was not located in the
  linker-default search paths.

Jeff Squyres

announce mailing list

Reply via email to