[MPICH] New Release of MPICH2 (1.0.6)

[Pavan Balaji]

Dear all,

A new version of MPICH2, 1.0.6, has been released for both Unix and 
Windows platforms. You can download it from 
http://www.mcs.anl.gov/mpi/mpich2. We recommend you upgrade to this 
version if you are running an older version of MPICH2 or MPICH-1. New 
features in this release include:

  - Updates to the ch3:nemesis channel including preliminary support for 
thread safety.
  - Preliminary support for dynamic loading of ch3 channels (sock, ssm, shm).
  - Singleton init capability with the MPD process manager.
  - Fixes in MPD related to MPI-2 connect-accept.
  - Improved support for MPI-2 generalized requests that allows true 
nonblocking I/O in ROMIO.
  - Performance improvements for derived datatypes (including packing and 
communication) through in-built loop-unrolling and buffer alignment.
  - Performance improvements for MPI_Gather when non-power-of-two 
processes are used, and when a non-zero ranked root is performing the gather.
  - MPE changes:
    * Enabled thread-safe MPI logging through global mutex.
    * Enhanced Jumpshot to be more thread friendly + added simple 
statistics in the Legend windows.
    * Added backtrace support to MPE on Solaris and glibc based systems, 
e.g. Linux. This improves the output error message from the 
Collective/Datatype checking library.
    * Fixed the CLOG2 format so it can be used in serial (non-MPI) logging.
  - MPI_Comm_create fixes for intercommunicators.
  - Enabled -O2 and equivalent compiler optimizations for supported 
compilers by default.
  - Many other bug fixes and code cleanup.

Details are in the CHANGES file in the distribution. A full list of change 
comments from the CVS commits is available at 
www.mcs.anl.gov/mpi/mpich2/mpich2_1_0_6changes.htm .

Also, we will soon be switching from CVS to SVN for source control. 
Anonymous read access to the SVN repository will be available. Details to 
follow.

Regards,
The MPICH2 Team

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If you have any feedback about this release or would like to report an 
issue with MPICH2, please send us an email at mpich2-maint at mcs.anl.gov.
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji