[mvapich-discuss] Announcing the release of MVAPICH2 2.2rc2, MVAPICH2-X 2.2rc2, and OMB 5.3.1

[Panda, Dhabaleswar]

The MVAPICH team is pleased to announce the release of MVAPICH2
2.2rc2, MVAPICH2-X 2.2rc2 (Advanced MPI Features, Support for OSU INAM
and Hybrid MPI+PGAS (OpenSHMEM, UPC, CAF and UPC++) with Unified
Communication Runtime), and OSU Micro-Benchmarks (OMB) 5.3.1.

Features and enhancements for MVAPICH2 2.2rc2 are as follows:

* Features and Enhancements (since 2.2rc1):
    - Enhanced performance for MPI_Comm_split through new bitonic
      algorithm
        - Thanks to Adam T. Moody at LLNL for the patch
    - Enable graceful fallback to Shared Memory if LiMIC2 or CMA
      transfer fails
    - Enable support for multiple MPI initializations
    - Unify process affinity support in Gen2, PSM and PSM2 channels
    - Remove verbs dependency when building the PSM and PSM2 channels
    - Allow processes to request MPI_THREAD_MULTIPLE when socket or
      NUMA node level affinity is specified
    - Point-to-point and collective performance optimization for Intel
      Knights Landing
    - Automatic detection and tuning for InfiniBand EDR HCAs
    - Warn user to reconfigure library if rank type is not large
      enough to represent all ranks in job
    - Collective tuning for Opal at LLNL, Bridges at PSC, and
      Stampede-1.5 at TACC
    - Tuning and architecture detection for Intel Broadwell processors
    - Add ability to avoid using --enable-new-dtags with ld
        - Thanks to Adam T. Moody at LLNL for the suggestion
    - Add LIBTVMPICH specific CFLAGS and LDFLAGS
        - Thanks to Adam T. Moody at LLNL for the suggestion

* Bug Fixes (since 2.2rc1):
    - Disable optimization that removes use of calloc in ptmalloc hook
      detection code
        - Thanks to Karl W. Schulz at Intel
    - Fix weak alias typos (allows successful compilation with CLANG
      compiler)
        - Thanks to Min Dong at Old Dominion University for the patch
    - Fix issues in PSM large message gather operations
        - Thanks to Adam T. Moody at LLNL for the report
    - Enhance error checking in collective tuning code
        - Thanks to Jan Bierbaum at Technical University of Dresden for
          the patch
    - Fix issues with UD based communication in RoCE mode
    - Fix issues with PMI2 support in singleton mode
    - Fix default binding bug in hydra launcher
    - Fix issues with Checkpoint Restart when launched with mpirun_rsh
    - Fix Fortran binding issues with Intel 2016 compilers
    - Fix issues with socket/NUMA node level binding
    - Disable atomics when using Connect-IB with RDMA_CM
    - Fix hang in MPI_Finalize when using hybrid channel
    - Fix memory leaks

MVAPICH2-X 2.2rc2 provides support for advanced MPI features (User
Mode Memory Registration and Non-blocking Collectives with
Core-Direct), OSU INAM and hybrid MPI+PGAS (UPC, OpenSHMEM, CAF, and
UPC++) programming models with unified communication runtime for
emerging exascale systems. This library also provides flexibility for
users to write applications using the following programming models
with a unified communication runtime: MPI, MPI+OpenMP, pure UPC, pure
OpenSHMEM, pure UPC++, and pure CAF programs as well as hybrid
MPI(+OpenMP) + PGAS (UPC, OpenSHMEM, CAF, and UPC++) programs.

Features and enhancements for MVAPICH2-X 2.2rc2 are as follows:

* Features and Enhancements (since 2.2rc1):
    - MPI Features
        - Based on MVAPICH2 2.2rc2 (OFA-IB-CH3 interface)
        - Efficient support for On Demand Paging (ODP) feature of
          Mellanox for point-to-point and RMA operations
        - Support for Intel Knights Landing architecture
    - UPC Features
        - Support for Intel Knights Landing architecture
    - UPC++ Features
        - Support for Intel Knights Landing architecture
    - OpenSHMEM Features
        - Support for Intel Knights Landing architecture
    - CAF Features
        - Support for Intel Knights Landing architecture
    - Hybrid Program Features
        - Support Intel Knights Landing architecture for hybrid
          MPI+PGAS applications
    - Unified Runtime Features
        - Based on MVAPICH2 2.2rc2 (OFA-IB-CH3 interface). All the
          runtime features enabled by default in OFA-IB-CH3 and
          OFA-IB-RoCE interface of MVAPICH2 2.2rc2 are available in
          MVAPICH2-X 2.2rc2

* Bug Fixes (since 2.2rc1):
    - Fix compilation warnings and memory leaks

New features, enhancements and bug fixes for OSU Micro-Benchmarks
(OMB) 5.3.1 are listed here.

* New Features & Enhancements
    - Add option to control whether CUDA kernels are built
    - Add runtime option to specify number of threads for osu_latency_mt

* Bug Fixes
    - Check if -lrt or -lpthread is needed
    - Fix compilation warnings
    - Fix non-blocking collective memory leak
    - Correct documentation for osu_multi_lat

For downloading MVAPICH2 2.2rc2, MVAPICH2-X 2.2rc2, OMB 5.3.1 and
associated user guides, quick start guide, and accessing the SVN,
please visit the following URL:

http://mvapich.cse.ohio-state.edu

All questions, feedback, bug reports, hints for performance tuning,
patches and enhancements are welcome. Please post it to the
mvapich-discuss mailing list (mvapich-discuss at cse.ohio-state.edu).

Thanks,

The MVAPICH Team