v5.8

• Known Bugs
  • The MPI RMA port remains unreliable for many MPI implementations. Open MPI
    still reports many failures in the test suit. Intel MPI is better but still
    reports several failures. It is recommended to use the latest MPI
    implementations available.
• Added
  • Version function that can be used to report the current version, subversion
    and patch numbers of the current release
  • Overlay option for creating new GAs on top of existing GAs
  • The number of progress ranks per node in the progress ranks runtime is now
    configurable
  • Functions for duplicating process groups and returning a process group that
    only contains the calling process
  • 64-bit versions of block-cyclic data distribution functions to
    C interface
  • Non-blocking test function
  • Read-only property based on caching
  • GA name can be recovered from handle
  • Added profiling capabilities to the GA branch that automatically generates
    a log file in the running directory. This can be controlled with GAW_FILE_PREFIX
    environment variable to add a prefix for the log files and the GAW_FMT
    environment variable to create a CSV format or human readable format. The
    default format is human readable.
    • For autotools, add --enable-profile=1 in the configure line
    • For CMake add -DENABLE_PROFILING=ON
• Changed
  • Non-blocking handle management was completely revamped. This simplifies
    implementation and removes some bugs. The number of outstanding non-blocking
    calls was increased to 256
  • Modified internal function that computes rank of processors on the world
    communicator so that it does not use the MPI_Comm_translate_ranks function.
    This function is implemented with a loop that scales as the square of the
    number of processors and is very slow at large processor counts
  • modified internal iterators so that block cyclic data distributions work on
    processor groups
  • Improved CMake build
  • Modified ga_print_distribution so that it works on block-cyclic data
    distributions
• Fixed
  • Fixed a non-blocking error that was showing up in nbtest.x