[mpich-discuss] [mvapich-discuss] Announcing the Release of MVAPICH2 1.8a2 and OSU Micro-Benchmarks (OMB) 3.5.1

[Dhabaleswar Panda]

These releases might be of interest to some of the MPICH users. Thus, I am
posting it here.

Thanks,

DK

---------- Forwarded message ----------
Date: Thu, 2 Feb 2012 13:20:40 -0500 (EST)
From: Dhabaleswar Panda <panda at cse.ohio-state.edu>
To: mvapich-discuss at cse.ohio-state.edu
Subject: [mvapich-discuss] Announcing the Release of MVAPICH2 1.8a2 and OSU
    Micro-Benchmarks (OMB) 3.5.1

The MVAPICH team is pleased to announce the release of MVAPICH2 1.8a2 and
OSU Micro-Benchmarks (OMB) 3.5.1.

Features, Enhancements, and Bug Fixes for MVAPICH2 1.8a2 are listed
here.

* New Features and Enhancements (since 1.8a1p1):

  - Support for collective communication from GPU buffers
  - Non-contiguous datatype support in point-to-point and collective
    communication from GPU buffers
  - Efficient GPU-GPU transfers within a node using CUDA IPC
    (for CUDA 4.1)
  - Alternate synchronization mechanism using CUDA Events for pipelined
    device data transfers
  - Exporting processes local rank in a node through environment variable
  - Adjust shared-memory communication block size at runtime
  - Enable XRC by default at configure time
  - New shared memory design for enhanced intra-node small message
    performance
  - Tuned inter-node and intra-node performance on different cluster
    architectures
  - Update to hwloc v1.3.1
  - Support for fallback to R3 rendezvous protocol if RGET fails
  - SLURM integration with mpiexec.mpirun_rsh to use SLURM allocated
    hosts without specifying a hostfile
  - Support added to automatically use PBS_NODEFILE in Torque and PBS
    environments
  - Enable signal-triggered (SIGUSR2) migration

* Bug Fixes (since 1.8a1p1):

  - Set process affinity independently of SMP enable/disable to control
    the affinity in loopback mode
  - Report error and exit if user requests MV2_USE_CUDA=1 in non-CUDA
    configuration
  - Fix for data validation error with GPU buffers
  - Updated WRAPPER_CPPFLAGS when using --with-cuda. Users should not
    have to explicitly specify CPPFLAGS or LDFLAGS to build applications
  - Fix for several compilation warnings
  - Report an error message if user requests MV2_USE_XRC=1 in non-XRC
    configuration
  - Remove debug prints in regular code path with MV2_USE_BLOCKING=1
      - Thanks to Vaibhav Dutt for the report
  - Handling shared memory collective buffers in a dynamic manner to
    eliminate static setting of maximum CPU core count
  - Fix for validation issues in MPICH2 one-sided tests
  - Fix a bug in packetized transfers on heterogeneous clusters
  - Fix for deadlock between psm_ep_connect and PMGR_COLLECTIVE calls
    on QLogic systems
      - Thanks to Adam T. Moody (LLNL) for the patch
  - Fix a bug in MPI_Allocate_mem when it is called with size 0
      - Thanks to Michele De Stefano for reporting this issue
  - Create vendor for Open64 compilers and add rpath for unknown
    compilers
      - Thanks to Martin Hilgemen (Dell) for the initial patch
  - Fix issue due to overlapping buffers with sprintf
      - Thanks to Mark Debbage (QLogic) for reporting this issue
  - Fallback to using GNU options for unknown f90 compilers
  - Fix hang in PMI_Barrier due to incorrect handling of the socket
    return values in mpirun_rsh
  - Unify the redundant FTB events used to initiate a migration
  - Fix memory leaks when mpirun_rsh reads hostfiles
  - Fix a bug where library attempts to use inactive rail
    in multi-rail scenario

Features, Enhancements and Bugfixes for OSU Micro-Benchmarks (OMB) 3.5.1
are listed here.

*New Features & Enhancements (since OMB 3.5):
  - Provide script to set GPU affinity for MPI processes

*Bug Fixes (since OMB 3.5):
  - Removed GPU binding after MPI_Init to avoid switching context

Sample performance numbers for MPI communication from NVIDIA GPU
memory using MVAPICH2 1.8a2 and OMB 3.5.1 can be obtained from the
following URL:

http://mvapich.cse.ohio-state.edu/performance/gpu.shtml

For downloading MVAPICH2 1.8a2, OMB 3.5.1, associated user guide,
quick start guide, and accessing the SVN, please visit the following
URL:

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

All questions, feedbacks, 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


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