MVAPICH2 Changelog
------------------
This file briefly describes the changes to the MVAPICH2 software
package.  The logs are arranged in the "most recent first" order.

MVAPICH2-1.6 (03/09/2011)

* Features and Enhancements (since 1.6-RC3)
    - Improved configure help for MVAPICH2 features
    - Updated Hydra launcher with MPICH2-1.3.3 Hydra process manager
    - Building and installation of OSU micro benchmarks during default
      MVAPICH2 installation
    - Hydra is the default mpiexec process manager

* Bug fixes (since 1.6-RC3)
    - Fix hang issues in RMA
    - Fix memory leaks
    - Fix in RDMA_FP

MVAPICH2-1.6-RC3 (02/15/2011)

* Features and Enhancements
    - Support for 3D torus topology with appropriate SL settings
        - For both CH3 and Nemesis interfaces
    - Thanks to Jim Schutt, Marcus Epperson and John Nagle from
      Sandia for the initial patch
    - Quality of Service (QoS) support with multiple InfiniBand SL
        - For both CH3 and Nemesis interfaces
    - Configuration file support (similar to the one available in MVAPICH).
      Provides a convenient method for handling all runtime variables 
      through a configuration file.
    - Improved job-startup performance on large-scale systems
    - Optimization in MPI_Finalize
    - Improved pt-to-pt communication performance for small and
      medium messages
    - Optimized and tuned algorithms for Gather and Scatter collective
      operations
    - Optimized thresholds for one-sided RMA operations
    - User-friendly configuration options to enable/disable various
      checkpoint/restart and migration features
    - Enabled ROMIO's auto detection scheme for filetypes
      on Lustre file system
    - Improved error checking for system and BLCR calls in
      checkpoint-restart and migration codepath
    - Enhanced OSU Micro-benchmarks suite (version 3.3)

Bug Fixes
    - Fix in aggregate ADIO alignment
    - Fix for an issue with LiMIC2 header
    - XRC connection management
    - Fixes in registration cache
    - IB card detection with MV2_IBA_HCA runtime option in
      multi rail design
    - Fix for a bug in multi-rail design while opening multiple HCAs
    - Fixes for multiple memory leaks
    - Fix for a bug in mpirun_rsh
    - Checks before enabling aggregation and migration
    - Fixing the build errors with --disable-cxx
    - Thanks to Bright Yang for reporting this issue
    - Fixing the build errors related to "pthread_spinlock_t"
      seen on RHEL systems

MVAPICH2-1.6-RC2 (12/22/2010)

* Features and Enhancements
    - Optimization and enhanced performance for clusters with nVIDIA
      GPU adapters (with and without GPUDirect technology)
    - Enhanced R3 rendezvous protocol
        - For both CH3 and Nemesis interfaces
    - Robust RDMA Fast Path setup to avoid memory allocation
      failures
        - For both CH3 and Nemesis interfaces
    - Multiple design enhancements for better performance of
      medium sized messages
    - Enhancements and optimizations for one sided Put and Get operations
    - Enhancements and tuning of Allgather for small and medium
      sized messages
    - Optimization of AllReduce
    - Enhancements to Multi-rail Design and features including striping
      of one-sided messages
    - Enhancements to mpirun_rsh job start-up scheme
    - Enhanced designs for automatic detection of various
      architectures and adapters

* Bug fixes
    - Fix a bug in Post-Wait/Start-Complete path for one-sided
      operations
    - Resolving a hang in mpirun_rsh termination when CR is enabled
    - Fixing issue in MPI_Allreduce and Reduce when called with MPI_IN_PLACE
        - Thanks to the initial patch by Alexander Alekhin
    - Fix for an issue in rail selection for small RMA messages
    - Fix for threading related errors with comm_dup
    - Fix for alignment issues in RDMA Fast Path
    - Fix for extra memcpy in header caching
    - Fix for an issue to use correct HCA when process to rail binding
      scheme used in combination with XRC.
    - Fix for an RMA issue when configured with enable-g=meminit
        - Thanks to James Dinan of Argonne for reporting this issue
    - Only set FC and F77 if gfortran is executable


MVAPICH2-1.6RC1 (11/12/2010)

* Features and Enhancements
    - Using LiMIC2 for efficient intra-node RMA transfer to avoid extra 
      memory copies
    - Upgraded to LiMIC2 version 0.5.4
    - Removing the limitation on number of concurrent windows in RMA
      operations
    - Support for InfiniBand Quality of Service (QoS) with multiple lanes
    - Enhanced support for multi-threaded applications
    - Fast Checkpoint-Restart support with aggregation scheme
    - Job Pause-Migration-Restart Framework for Pro-active Fault-Tolerance
    - Support for new standardized Fault Tolerant Backplane (FTB) Events
      for Checkpoint-Restart and Job Pause-Migration-Restart Framework
    - Dynamic detection of multiple InfiniBand adapters and using these
      by default in multi-rail configurations (OLA-IB-CH3, OFA-iWARP-CH3 and
      OFA-RoCE-CH3 interfaces)
    - Support for process-to-rail binding policy (bunch, scatter and
      user-defined) in multi-rail configurations (OFA-IB-CH3, OFA-iWARP-CH3 and
      OFA-RoCE-CH3 interfaces)
    - Enhanced and optimized algorithms for MPI_Reduce and MPI_AllReduce
      operations for small and medium message sizes.
    - XRC support with Hydra Process Manager
    - Improved usability of process to CPU mapping with support of
      delimiters (',' , '-') in CPU listing
	- Thanks to Gilles Civario for the initial patch
    - Use of gfortran as the default F77 compiler
    - Support of Shared-Memory-Nemesis interface on multi-core platforms
      requiring intra-node communication only (SMP-only systems, laptops, etc. )
    
* Bug fixes
    - Fix for memory leak in one-sided code with --enable-g=all
       --enable-error-messages=all
    - Fix for memory leak in getting the context of intra-communicator
    - Fix for shmat() return code check
    - Fix for issues with inter-communicator collectives in Nemesis
    - KNEM patch for osu_bibw issue with KNEM version 0.9.2
    - Fix for osu_bibw error with Shared-memory-Nemesis interface
    - Fix for Win_test error for one-sided RDMA
    - Fix for a hang in collective when thread level is set to multiple
    - Fix for intel test errors with rsend, bsend and ssend operations in Nemesis
    - Fix for memory free issue when it allocated by scandir
    - Fix for a hang in Finalize
    - Fix for issue with MPIU_Find_local_and_external when it is called
      from MPIDI_CH3I_comm_create
    - Fix for handling CPPFLGS values with spaces
    - Dynamic Process Management to work with XRC support
    - Fix related to disabling CPU affinity when shared memory is turned off at run time

- MVAPICH2-1.5.1 (09/14/10)

* Features and Enhancements
    - Significantly reduce memory footprint on some systems by changing the
      stack size setting for multi-rail configurations
    - Optimization to the number of RDMA Fast Path connections
    - Performance improvements in Scatterv and Gatherv collectives for CH3
      interface (Thanks to Dan Kokran and Max Suarez of NASA for identifying
      the issue)
    - Tuning of Broadcast Collective
    - Support for tuning of eager thresholds based on both adapter and platform
      type
    - Environment variables for message sizes can now be expressed in short
      form K=Kilobytes and M=Megabytes (e.g.  MV2_IBA_EAGER_THRESHOLD=12K)
    - Ability to selectively use some or all HCAs using colon separated lists.
      e.g. MV2_IBA_HCA=mlx4_0:mlx4_1
    - Improved Bunch/Scatter mapping for process binding with HWLOC and SMT
      support (Thanks to Dr. Bernd Kallies of ZIB for ideas and suggestions)
    - Update to Hydra code from MPICH2-1.3b1
    - Auto-detection of various iWARP adapters
    - Specifying MV2_USE_IWARP=1 is no longer needed when using iWARP
    - Changing automatic eager threshold selection and tuning for iWARP
      adapters based on number of nodes in the system instead of the number of
      processes
    - PSM progress loop optimization for QLogic Adapters (Thanks to Dr.
      Avneesh Pant of QLogic for the patch)

* Bug fixes
    - Fix memory leak in registration cache with --enable-g=all
    - Fix memory leak in operations using datatype modules
    - Fix for rdma_cross_connect issue for RDMA CM. The server is prevented
      from initiating a connection.
    - Don't fail during build if RDMA CM is unavailable
    - Various mpirun_rsh bug fixes for CH3, Nemesis and uDAPL interfaces
    - ROMIO panfs build fix
    - Update panfs for not-so-new ADIO file function pointers
    - Shared libraries can be generated with unknown compilers
    - Explicitly link against DL library to prevent build error due to DSO link
      change in Fedora 13 (introduced with gcc-4.4.3-5.fc13)
    - Fix regression that prevents the proper use of our internal HWLOC
      component
    - Remove spurious debug flags when certain options are selected at build
      time
    - Error code added for situation when received eager SMP message is larger
      than receive buffer
    - Fix for Gather and GatherV back-to-back hang problem with LiMIC2
    - Fix for packetized send in Nemesis
    - Fix related to eager threshold in nemesis ib-netmod
    - Fix initialization parameter for Nemesis based on adapter type
    - Fix for uDAPL one sided operations (Thanks to Jakub Fedoruk from Intel
      for reporting this)
    - Fix an issue with out-of-order message handling for iWARP
    - Fixes for memory leak and Shared context Handling in PSM for QLogic
      Adapters (Thanks to Dr. Avneesh Pant of QLogic for the patch)


MVAPICH2-1.5 (07/09/10)

* Features and Enhancements (since 1.5-RC2)
    - SRQ turned on by default for Nemesis interface
    - Performance tuning - adjusted eager thresholds for
      variety of architectures, vbuf size based on adapter
      types and vbuf pool sizes
    - Tuning for Intel iWARP NE020 adapter, thanks to Harry
      Cropper of Intel
    - Introduction of a retry mechanism for RDMA_CM connection
      establishment

* Bug fixes (since 1.5-RC2)
    - Fix in build process with hwloc (for some Distros)
    - Fix for memory leak (Nemesis interface)


MVAPICH2-1.5-RC2 (06/21/10)

* Features and Enhancements (since 1.5-RC1)
    - Support for hwloc library (1.0.1) for defining CPU affinity
    - Deprecating the PLPA support for defining CPU affinity
    - Efficient CPU affinity policies (bunch and scatter) to
      specify CPU affinity per job for modern multi-core platforms
    - New flag in mpirun_rsh to execute tasks with different group IDs
    - Enhancement to the design of Win_complete for RMA operations
    - Flexibility to support variable number of RMA windows
    - Support for Intel iWARP NE020 adapter

* Bug fixes (since 1.5-RC1)
    - Compilation issue with the ROMIO adio-lustre driver, thanks
      to Adam Moody of LLNL for reporting the issue
    - Allowing checkpoint-restart for large-scale systems
    - Correcting a bug in clear_kvc function. Thanks to T J (Chris) Ward,
      IBM Research, for reporting and providing the resolving patch
    - Shared lock operations with RMA with scatter process distribution.
      Thanks to Pavan Balaji of Argonne for reporting this issue
    - Fix a bug during window creation in uDAPL
    - Compilation issue with --enable-alloca, Thanks to E. Borisch,
      for reporting and providing the patch
    - Improved error message for ibv_poll_cq failures
    - Fix an issue that prevents mpirun_rsh to execute programs without
      specifying the path from directories in PATH
    - Fix an issue of mpirun_rsh with Dynamic Process Migration (DPM)
    - Fix for memory leaks (both CH3 and Nemesis interfaces)
    - Updatefiles correctly update LiMIC2
    - Several fixes to the registration cache
      (CH3, Nemesis and uDAPL interfaces)
    - Fix to multi-rail communication
    - Fix to Shared Memory communication Progress Engine
    - Fix to all-to-all collective for large number of processes


MVAPICH2-1.5-RC1 (05/04/10)

* Features and Enhancements 
    - MPI 2.2 compliant 
    - Based on MPICH2-1.2.1p1 
    - OFA-IB-Nemesis interface design 
        - OpenFabrics InfiniBand network module support for 
          MPICH2 Nemesis modular design 
        - Support for high-performance intra-node shared memory 
          communication provided by the Nemesis design 
        - Adaptive RDMA Fastpath with Polling Set for high-performance 
          inter-node communication 
        - Shared Receive Queue (SRQ) support with flow control, 
          uses significantly less memory for MPI library 
        - Header caching 
        - Advanced AVL tree-based Resource-aware registration cache 
        - Memory Hook Support provided by integration with ptmalloc2 
          library. This provides safe release of memory to the 
          Operating System and is expected to benefit the memory 
          usage of applications that heavily use malloc and free
		  operations. 
        - Support for TotalView debugger 
        - Shared Library Support for existing binary MPI application 
          programs to run ROMIO Support for MPI-IO
        - Support for additional features (such as hwloc, 
          hierarchical collectives, one-sided, multithreading, etc.), 
          as included in the MPICH2 1.2.1p1 Nemesis channel 
    - Flexible process manager support 
        - mpirun_rsh to work with any of the eight interfaces 
          (CH3 and Nemesis channel-based) including OFA-IB-Nemesis, 
          TCP/IP-CH3 and TCP/IP-Nemesis 
        - Hydra process manager to work with any of the eight interfaces 
          (CH3 and Nemesis channel-based) including OFA-IB-CH3, 
          OFA-iWARP-CH3, OFA-RoCE-CH3 and TCP/IP-CH3 
    - MPIEXEC_TIMEOUT is honored by mpirun_rsh

* Bug fixes since 1.4.1
    - Fix compilation error when configured with
      `--enable-thread-funneled'
    - Fix MPE functionality, thanks to Anthony Chan  for
      reporting and providing the resolving patch
    - Cleanup after a failure in the init phase is handled better by
      mpirun_rsh
    - Path determination is correctly handled by mpirun_rsh when DPM is
      used
    - Shared libraries are correctly built (again)


MVAPICH2-1.4.1

* Enhancements since mvapich2-1.4
   - MPMD launch capability to mpirun_rsh
   - Portable Hardware Locality (hwloc) support, patch suggested by
     Dr. Bernd Kallies <kallies@zib.de>
   - Multi-port support for iWARP
   - Enhanced iWARP design for scalability to higher process count
   - Ring based startup support for RDMAoE

* Bug fixes since mvapich2-1.4
   - Fixes for MPE and other profiling tools
     as suggested by Anthony Chan (chan@mcs.anl.gov)
   - Fixes for finalization issue with dynamic process management
   - Removed overrides to PSM_SHAREDCONTEXT, PSM_SHAREDCONTEXTS_MAX variables. 
     Suggested by Ben Truscott <b.s.truscott@bristol.ac.uk>. 
   - Fixing the error check for buffer aliasing in MPI_Reduce as
     suggested by Dr. Rajeev Thakur <thakur@mcs.anl.gov>
   - Fix Totalview integration for RHEL5
   - Update simplemake to handle build timestamp issues
   - Fixes for --enable-g={mem, meminit}
   - Improved logic to control the receive and send requests to handle the
     limitation of CQ Depth on iWARP
   - Fixing assertion failures with IMB-EXT tests
   - VBUF size for very small iWARP clusters bumped up to 33K
   - Replace internal mallocs with MPIU_Malloc uniformly for correct
     tracing with --enable-g=mem
   - Fixing multi-port for iWARP
   - Fix memory leaks
   - Shared-memory reduce fixes for MPI_Reduce invoked with MPI_IN_PLACE
   - Handling RDMA_CM_EVENT_TIMEWAIT_EXIT event
   - Fix for threaded-ctxdup mpich2 test
   - Detecting spawn errors, patch contributed by
     Dr. Bernd Kallies <kallies@zib.de>
   - IMB-EXT fixes reported by Yutaka from Cray Japan
   - Fix alltoall assertion error when limic is used

MVAPICH2-1.4

* Enhancements since mvapich2-1.4rc2
    - Efficient runtime CPU binding
    - Add an environment variable for controlling the use of multiple cq's for
      iWARP interface.
    - Add environmental variables to disable registration cache for All-to-All
      on large systems.
    - Performance tune for pt-to-pt Intra-node communication with LiMIC2
    - Performance tune for MPI_Broadcast

* Bug fixes since mvapich2-1.4rc2
    - Fix the reading error in lock_get_response by adding
      initialization to req->mrail.protocol
    - Fix mpirun_rsh scalability issue with hierarchical ssh scheme
      when launching greater than 8K processes.
    - Add mvapich_ prefix to yacc functions. This can avoid some namespace
      issues when linking with other libraries.  Thanks to Manhui Wang
      <wangm9@cardiff.ac.uk> for contributing the patch.

MVAPICH2-1.4-rc2

* Enhancements since mvapich2-1.4rc1
    - Added Feature: Check-point Restart with Fault-Tolerant Backplane Support
      (FTB_CR)
    - Added Feature: Multiple CQ-based design for Chelsio iWARP
    - Distribute LiMIC2-0.5.2 with MVAPICH2. Added flexibility for selecting
      and using a pre-existing installation of LiMIC2
    - Increase the amount of command line that mpirun_rsh can handle (Thanks
      for the suggestion by Bill Barth @ TACC)

* Bug fixes since mvapich2-1.4rc1
    - Fix for hang with packetized send using RDMA Fast path
    - Fix for allowing to use user specified P_Key's (Thanks to Mike Heinz @
      QLogic)
    - Fix for allowing mpirun_rsh to accept parameters through the
      parmeters file (Thanks to Mike Heinz @ QLogic)
    - Modify the default value of shmem_bcast_leaders to 4K
    - Fix for one-sided with XRC support
    - Fix hang with XRC
    - Fix to always enabling MVAPICH2_Sync_Checkpoint functionality
    - Fix build error on RHEL 4 systems (Reported by Nathan Baca and Jonathan
      Atencio)
    - Fix issue with PGI compilation for PSM interface
    - Fix for one-sided accumulate function with user-defined continguous
      datatypes
    - Fix linear/hierarchical switching logic and reduce threshold for the
      enhanced mpirun_rsh framework.
    - Clean up intra-node connection management code for iWARP
    - Fix --enable-g=all issue with uDAPL interface
    - Fix one sided operation with on demand CM.
    - Fix VPATH build

MVAPICH2-1.4-rc1

* Bugs fixed since MVAPICH2-1.2p1

  - Changed parameters for iWARP for increased scalability

  - Fix error with derived datatypes and Put and Accumulate operations
      Request was being marked complete before data transfer
      had actually taken place when MV_RNDV_PROTOCOL=R3 was used

  - Unregister stale memory registrations earlier to prevent
    malloc failures

  - Fix for compilation issues with --enable-g=mem and --enable-g=all

  - Change dapl_prepost_noop_extra value from 5 to 8 to prevent
    credit flow issues.

  - Re-enable RGET (RDMA Read) functionality

  - Fix SRQ Finalize error
    Make sure that finalize does not hang when the srq_post_cond is
    being waited on.

  - Fix a multi-rail one-sided error when multiple QPs are used
  
  - PMI Lookup name failure with SLURM

  - Port auto-detection failure when the 1st HCA did 
    not have an active failure

  - Change default small message scheduling for multirail
    for higher performance
 
  - MPE support for shared memory collectives now available

MVAPICH2-1.2p1 (11/11/2008)

* Changes since MVAPICH2-1.2

  - Fix shared-memory communication issue for AMD Barcelona systems.

MVAPICH2-1.2 (11/06/2008)

* Bugs fixed since MVAPICH2-1.2-rc2

  - Ignore the last bit of the pkey and remove the pkey_ix option since the
    index can be different on different machines. Thanks for Pasha@Mellanox for
    the patch.

  - Fix data types for memory allocations. Thanks for Dr. Bill Barth from TACC
    for the patches.

  - Fix a bug when MV2_NUM_HCAS is larger than the number of active HCAs.

  - Allow builds on architectures for which tuning parameters do not exist.

* Changes related to the mpirun_rsh framework

  - Always build and install mpirun_rsh in addition to the process manager(s)
    selected through the --with-pm mechanism.

  - Cleaner job abort handling

  - Ability to detect the path to mpispawn if the Linux proc filesystem is
    available.

  - Added Totalview debugger support

  - Stdin is only available to rank 0.  Other ranks get /dev/null.

* Other miscellaneous changes

  - Add sequence numbers for RPUT and RGET finish packets.

  - Increase the number of allowed nodes for shared memory broadcast to 4K.

  - Use /dev/shm on Linux as the default temporary file path for shared memory
    communication. Thanks for Doug Johnson@OSC for the patch.

  - MV2_DEFAULT_MAX_WQE has been replaced with MV2_DEFAULT_MAX_SEND_WQE and 
    MV2_DEFAULT_MAX_RECV_WQE for send and recv wqes, respectively.

  - Fix compilation warnings.

MVAPICH2-1.2-RC2 (08/20/2008)

* Following bugs are fixed in RC2

  - Properly handle the scenario in shared memory broadcast code when the 
    datatypes of different processes taking part in broadcast are different. 

  - Fix a bug in Checkpoint-Restart code to determine whether a connection is a
    shared memory connection or a network connection.

  - Support non-standard path for BLCR header files.

  - Increase the maximum heap size to avoid race condition in realloc().

  - Use int32_t for rank for larger jobs with 32k processes or more.

  - Improve mvapich2-1.2 bandwidth to the same level of mvapich2-1.0.3.

  - An error handling patch for uDAPL interface. Thanks for Nilesh Awate for
    the patch.

  - Explicitly set some of the EP attributes when on demand connection is used
    in uDAPL interface.

MVAPICH2-1.2-RC1 (07/02/08)

* Following features are added for this new mvapich2-1.2 release: 

  - Based on MPICH2 1.0.7

  - Scalable and robust daemon-less job startup

       -- Enhanced and robust mpirun_rsh framework (non-MPD-based) to
          provide scalable job launching on multi-thousand core clusters

       -- Available for OpenFabrics (IB and iWARP) and uDAPL interfaces
          (including Solaris)

  - Adding support for intra-node shared memory communication with Checkpoint-restart

       --  Allows best performance and scalability with fault-tolerance
           support

  - Enhancement to software installation

       -- Change to full autoconf-based configuration
       -- Adding an application (mpiname) for querying the MVAPICH2 library
          version and configuration information

  - Enhanced processor affinity using PLPA for multi-core architectures

  - Allows user-defined flexible processor affinity

  - Enhanced scalability for RDMA-based direct one-sided communication
    with less communication resource

  - Shared memory optimized MPI_Bcast operations

  - Optimized and tuned MPI_Alltoall

MVAPICH2-1.0.2 (02/20/08)

* Change the default MV2_DAPL_PROVIDER to OpenIB-cma

* Remove extraneous parameter is_blocking from the gen2 interface for
  MPIDI_CH3I_MRAILI_Get_next_vbuf

* Explicitly name unions in struct ibv_wr_descriptor and reference the
  members in the code properly.

* Change "inline" functions to "static inline" properly.

* Increase the maximum number of buffer allocations for communication
  intensive applications

* Corrections for warnings from the Sun Studio 12 compiler.

* If malloc hook initialization fails, then turn off registration
  cache

* Add MV_R3_THESHOLD and MV_R3_NOCACHE_THRESHOLD which allows
  R3 to be used for smaller messages instead of registering the
  buffer and using a zero-copy protocol.

* Fixed an error in message coalescing.

* Setting application initiated checkpoint as default if CR is turned on.


MVAPICH2-1.0.1 (10/29/07)

* Enhance udapl initializaton, set all ep_attr fields properly.
  Thanks for Kanoj Sarcar from NetXen for the patch.

* Fixing a bug that miscalculates the receive size in case of complex
  datatype is used.
  Thanks for Patrice Martinez from Bull for reporting this problem.

 * Minor patches for fixing (i) NBO for rdma-cm ports and (ii) rank
   variable usage in DEBUG_PRINT in rdma-cm.c
   Thanks to Steve Wise for reporting these.


MVAPICH2-1.0 (09/14/07)

* Following features and bug fixes are added in this new MVAPICH2-1.0 release:

- Message coalescing support to enable reduction of per Queue-pair
  send queues for reduction in memory requirement on large scale
  clusters. This design also increases the small message messaging
  rate significantly. Available for Open Fabrics Gen2-IB.

- Hot-Spot Avoidance Mechanism (HSAM) for alleviating
  network congestion in large scale clusters. Available for
  Open Fabrics Gen2-IB.

- RDMA CM based on-demand connection management for large scale
  clusters. Available for OpenFabrics Gen2-IB and Gen2-iWARP.

- uDAPL on-demand connection management for large scale clusters.
  Available for uDAPL interface (including Solaris IB implementation).

- RDMA Read support for increased overlap of computation and
  communication. Available for OpenFabrics Gen2-IB and Gen2-iWARP.

- Application-initiated system-level (synchronous) checkpointing in
  addition to the user-transparent checkpointing. User application can
  now request a whole program checkpoint synchronously with BLCR by
  calling special functions within the application. Available for
  OpenFabrics Gen2-IB.

- Network-Level fault tolerance with Automatic Path Migration (APM)
  for tolerating intermittent network failures over InfiniBand.
  Available for OpenFabrics Gen2-IB.

- Integrated multi-rail communication support for OpenFabrics
  Gen2-iWARP.

- Blocking mode of communication progress. Available for OpenFabrics
  Gen2-IB.

- Based on MPICH2 1.0.5p4.


* Fix for hang while using IMB with -multi option. 
  Thanks to Pasha (Mellanox) for reporting this.

* Fix for hang in memory allocations > 2^31 - 1.
  Thanks to Bryan Putnam (Purdue) for reporting this.

* Fix for RDMA_CM finalize rdma_destroy_id failure. 
  Added Timeout env variable for RDMA_CM ARP. 
  Thanks to Steve Wise for suggesting these.

* Fix for RDMA_CM invalid event in finalize. Thanks to Steve Wise and Sean Hefty.

* Fix for shmem memory collectives related memory leaks

* Updated src/mpi/romio/adio/ad_panfs/Makefile.in include path to find mpi.h.
  Contributed by David Gunter, Los Alamos National Laboratory.

* Fixed header caching error on handling datatype messages with small vector 
  sizes.

* Change the finalization protocol for UD connection manager.

* Fix for the "command line too long" problem. Contributed by Xavier Bru
  <xavier.bru@bull.net> from Bull (http://www.bull.net/)

* Change the CKPT handling to invalidate all unused registration cache.

* Added ofed 1.2 interface change patch for iwarp/rdma_cm from Steve Wise.

* Fix for rdma_cm_get_event err in finalize. Reported by Steve Wise.

* Fix for when MV2_IBA_HCA is used. Contributed by Michael Schwind 
  of Technical Univ. of Chemnitz (Germany).


MVAPICH2-0.9.8 (11/10/06)

* Following features are added in this new MVAPICH2-0.9.8 release:

- BLCR based Checkpoint/Restart support

- iWARP support: tested with Chelsio and Ammasso adapters and OpenFabrics/Gen2 stack

- RDMA CM connection management support 

- Shared memory optimizations for collective communication operations

- uDAPL support for NetEffect 10GigE adapter.


MVAPICH2-0.9.6 (10/22/06)

* Following features and bug fixes are added in this new MVAPICH2-0.9.6 release:

- Added on demand connection management.

- Enhance shared memory communication support.

- Added ptmalloc memory hook support.

- Runtime selection for most configuration options.


MVAPICH2-0.9.5 (08/30/06)

* Following features and bug fixes are added in this new MVAPICH2-0.9.5 release:

- Added multi-rail support for both point to point and direct one side
  operations.

- Added adaptive RDMA fast path.

- Added shared receive queue support.

- Added TotalView debugger support

* Optimization of SMP startup information exchange for USE_MPD_RING to
  enhance performance for SLURM. Thanks to Don and team members from Bull 
  and folks from LLNL for their feedbacks and comments. 

* Added uDAPL build script functionality to set DAPL_DEFAULT_PROVIDER
  explicitly with default suggestions.

* Thanks to Harvey Richardson from Sun for suggesting this feature.


MVAPICH2-0.9.3 (05/20/06)

* Following features are added in this new MVAPICH2-0.9.3 release:

- Multi-threading support

- Integrated with MPICH2 1.0.3 stack

- Advanced AVL tree-based Resource-aware registration cache

- Tuning and Optimization of various collective algorithms 

- Processor affinity for intra-node shared memory communication

- Auto-detection of InfiniBand adapters for Gen2 


MVAPICH2-0.9.2 (01/15/06)

* Following features are added in this new MVAPICH2-0.9.2 release:

- InfiniBand support for OpenIB/Gen2

- High-performance and optimized support for many MPI-2
  functionalities (one-sided, collectives, datatype)

- Support for other MPI-2 functionalities (as provided by MPICH2 1.0.2p1)

- High-performance and optimized support for all MPI-1 functionalities 


MVAPICH2-0.9.0 (11/01/05)

* Following features are added in this new MVAPICH2-0.9.0 release:

- Optimized two-sided operations with RDMA support

- Efficient memory registration/de-registration schemes for RDMA operations

- Optimized intra-node shared memory support (bus-based and NUMA)

- Shared library support

- ROMIO support

- Support for multiple compilers (gcc, icc, and pgi)



MVAPICH2-0.6.5 (07/02/05)

* Following features are added in this new MVAPICH2-0.6.5 release:

- uDAPL support (tested for InfiniBand, Myrinet, and Ammasso GigE)


MVAPICH2-0.6.0 (11/04/04)

* Following features are added in this new MVAPICH2-0.6.0 release:

- MPI-2 functionalities (one-sided, collectives, datatype)

- All MPI-1 functionalities

- Optimized one-sided operations (Get, Put, and Accumulate)

- Support for active and passive synchronization

- Optimized two-sided operations

- Scalable job start-up

- Optimized and tuned for the above platforms and different
  network interfaces (PCI-X and PCI-Express)

- Memory efficient scaling modes for medium and large clusters
