[mpich-discuss] [mvapich-discuss] Announcing the Release of MVAPICH2 1.8RC1 and OSU Micro-Benchmarks (OMB) 3.5.2

Dhabaleswar Panda panda at cse.ohio-state.edu
Thu Mar 22 14:05:57 CDT 2012 

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

Thanks,

DK


---------- Forwarded message ----------
Date: Thu, 22 Mar 2012 13:21:26 -0400 (EDT)
From: Dhabaleswar Panda <panda at cse.ohio-state.edu>
To: mvapich-discuss at cse.ohio-state.edu
Cc: Dhabaleswar Panda <panda at cse.ohio-state.edu>
Subject: [mvapich-discuss] Announcing the Release of MVAPICH2 1.8RC1 and
    OSU Micro-Benchmarks (OMB) 3.5.2

The MVAPICH team is pleased to announce the release of MVAPICH2 1.8RC1
and OSU Micro-Benchmarks (OMB) 3.5.2.

Features, Enhancements, and Bug Fixes for MVAPICH2 1.8RC1 are listed
here.

* New Features and Enhancements (since 1.8a2):

    - New design for intra-node communication from GPU Device buffers
      using CUDA IPC for better performance and correctness
        - Thanks to Joel Scherpelz from NVIDIA for his suggestions
    - Enabled shared memory communication for host transfers when CUDA is
      enabled
    - Optimized and tuned collectives for GPU device buffers
    - Enhanced pipelined inter-node device transfers
    - Enhanced shared memory design for GPU device transfers for
      large messages
    - Enhanced support for CPU binding with socket and numanode level
      granularity
    - Support suspend/resume functionality with mpirun_rsh
    - Exporting local rank, local size, global rank and global size
      through environment variables (both mpirun_rsh and hydra)
    - Update to hwloc v1.4
    - Checkpoint-Restart support in OFA-IB-Nemesis interface
    - Enabling run-through stabilization support to handle process
      failures in OFA-IB-Nemesis interface
    - Enhancing OFA-IB-Nemesis interface to handle IB errors gracefully
    - Performance tuning on various platforms
    - Support for Mellanox IB FDR adapter

* Bug Fixes (since 1.8a2):

    - Fix a hang issue on InfiniHost SDR/DDR cards
        - Thanks to Nirmal Seenu from Fermilab for the report
    - Fix an issue with runtime parameter MV2_USE_COALESCE usage
    - Fix an issue with LiMIC2 when CUDA is enabled
    - Fix an issue with intra-node communication using datatypes and GPU
      device buffers
    - Fix an issue with Dynamic Process Management when launching
      processes on multiple nodes
        - Thanks to Rutger Hofman from VU Amsterdam for the report
    - Fix build issue in hwloc source with mcmodel=medium flags
        - Thanks to Nirmal Seenu from Fermilab for the report
    - Fix a build issue in hwloc with --disable-shared or
      --disabled-static options
    - Use portable stdout and stderr redirection
        - Thanks to Dr. Axel Philipp from MTU Aero Engines for the patch
    - Fix a build issue with PGI 12.2
        - Thanks to Thomas Rothrock from U.S. Army SMDC for the patch
    - Fix an issue with send message queue in OFA-IB-Nemesis interface
    - Fix a process cleanup issue in Hydra when MPI_ABORT is called
      (upstream MPICH2 patch)
    - Fix an issue with non-contiguous datatypes in MPI_Gather
    - Fix a few memory leaks and warnings

Bugfixes for OSU Micro-Benchmarks (OMB) 3.5.2 is listed here.

* Bug Fix (since OMB 3.5.1):
  - Fix typo which led to use of incorrect buffers

The complete set of features and enhancements for MVAPICH2 1.8RC1 compared
to MVAPICH2 1.7 are as follows:

* Features & Enhancements:
    - Support for MPI communication from NVIDIA GPU device memory
        - High performance RDMA-based inter-node point-to-point
          communication (GPU-GPU, GPU-Host and Host-GPU)
        - High performance intra-node point-to-point communication for
          multi-GPU adapters/node (GPU-GPU, GPU-Host and Host-GPU)
        - Taking advantage of CUDA IPC (available in CUDA 4.1) in
          intra-node communication for multiple GPU adapters/node
        - Optimized and tuned collectives for GPU device buffers
        - MPI datatype support for point-to-point and collective
          communication from GPU device buffers
    - Support suspend/resume functionality with mpirun_rsh
    - Enhanced support for CPU binding with socket and numanode level
      granularity
    - Exporting local rank, local size, global rank and global size
      through environment variables (both mpirun_rsh and hydra)
    - Update to hwloc v1.4
    - Checkpoint-Restart support in OFA-IB-Nemesis interface
    - Enabling run-through stabilization support to handle process
      failures in OFA-IB-Nemesis interface
    - Enhancing OFA-IB-Nemesis interface to handle IB errors gracefully
    - Performance tuning on various architecture clusters
    - Support for Mellanox IB FDR adapter
    - 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
    - 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
    - Reduced memory footprint of the library
    - Enhanced one-sided communication design with reduced memory
      requirement
    - Enhancements and tuned collectives (Bcast and Alltoallv)
    - Flexible HCA selection with Nemesis interface
        - Thanks to Grigori Inozemtsev, Queens University
    - Support iWARP interoperability between Intel NE020 and
      Chelsio T4 Adapters
    - RoCE enable environment variable name is changed from MV2_USE_RDMAOE
      to MV2_USE_RoCE

Sample performance numbers for MPI communication from NVIDIA GPU memory
using MVAPICH2 1.8RC1 and OMB 3.5.2 can be obtained from the following
URL:

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

For downloading MVAPICH2 1.8RC1, OMB 3.5.2, 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).

We are also happy to inform that the number of downloads from MVAPICH
project site has crossed 100,000. The MVAPICH team extends thanks to all
MVAPICH/MVAPICH2 users and their organizations.

Thanks,

The MVAPICH Team


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