[mvapich-discuss] Announcing the release of MVAPICH2-GDR 2.2b and OSU Micro-Benchmarks (OMB) 5.2

[Panda, Dhabaleswar]

The MVAPICH team is pleased to announce the release of MVAPICH2-GDR
2.2b and OSU Micro-Benchmarks (OMB) 5.2.

MVAPICH2-GDR 2.2b is based on the standard MVAPICH2 2.2b release and
incorporates designs that take advantage of the new GPUDirect RDMA
technology for inter-node data movement on NVIDIA GPUs clusters with
Mellanox InfiniBand interconnect. Further, MVAPICH2-GDR 2.2b provides
efficient support for CUDA-Aware Managed Memory.

Features, Enhancements, and Bug Fixes for MVAPICH2-GDR 2.2b are listed
here.

* Features and Enhancements (since MVAPICH2-GDR 2.2a)
    - Based on MVAPICH2-2.2b
    - Support for CUDA-Aware Managed Memory
        - Efficient intra-node and inter-node communication directly
          from/to Managed pointers
        - Automatic support for heterogeneous program with both
          managed and no managed memory (traditional) allocation

* Bug Fixes (since MVAPICH2-GDR 2.2a)
    - Provide clearer message when GDR library is unable to use
      GDR kernel driver

MVAPICH2-GDR 2.2b release requires the following software to be
installed on your system:

  - Mellanox OFED 2.1 or later
  - NVIDIA Driver 331.20 or later
  - NVIDIA CUDA Toolkit 6.0 or later
  - Plugin module to enable GPUDirect RDMA
  - (Strongly recommended) NVIDIA GDRCOPY module

Further, MVAPICH2-GDR 2.2b enables support on GPU-Cluster using
regular OFED (without GPUDirect RDMA)

New features, enhancements and bug fixes for OSU Micro-Benchmarks
(OMB) 5.2 are listed here.

* New Features & Enhancements (since OMB 5.1)
    - Support for CUDA-Aware Managed Memory
        * osu_bibw
        * osu_bw
        * osu_latency
        * osu_allgather
        * osu_allgatherv
        * osu_allreduce
        * osu_alltoall
        * osu_alltoallv
        * osu_bcast
        * osu_gather
        * osu_gatherv
        * osu_reduce
        * osu_reduce_scatter
        * osu_scatter
        * osu_scatterv
    - Add ability to specify minimum message size in addition to maximum
      message size for all collective benchmarks

For downloading MVAPICH2-GDR 2.2b, OMB 5.2, associated user guide, and
sample performance numbers please visit the following URL:

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

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

Thanks,

The MVAPICH Team
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