[mpich-discuss] [mpich2-announce] Announcing the availability of MPICH2-1.1b1

[Joe Ratterman]

Dave and Pavan,

*1)*
The most subtle problem I found related to the use of MPID_Segment_pack by
MPIR_Localcopy in src/mpi/coll/helper_fns.c.  It passes the variable "last"
of type "MPIDI_msg_sz_t" as "&last" to the pack/unpack functions, which are
expecting an MPI_Aint*.  On our system, *MPIDI_msg_sz_t is an unsigned*, and
*MPI_Aint is a long long*.  This means that MPID_Segment_pack clobbers too
much memory.  To fix this, I changed "last" to be an MPI_Aint, and it works
fine.  I think that means that
A)  "last" should be an MPI_Aint, or
B)  Segment_*pack() should take a MPIDI_msg_sz_t*, or
C)  MPIDI_msg_sz_t should be the same as MPI_Aint.

I don't really know what the answer is.  However, I caught this thanks to a
compiler warning, and our other uses of MPIDI_msg_sz_t do not generate
warnings.  I think that means that MPIDI_msg_sz_t is the correct size.


*2)*
I'm still having issues with "MPIU_Find_local_and_external".  I am getting
the fall-back version (judging from the line numbers), but it prints a lot
of these messages:

stderr[2]: Internal Error: invalid error code 1312d10 (Ring Index out of
range) in MPIU_Find_local_and_external:213
stderr[0]: Internal Error: invalid error code 1312d10 (Ring Index out of
range) in MPIU_Find_local_and_external:213
stderr[3]: Internal Error: invalid error code 1312d10 (Ring Index out of
range) in MPIU_Find_local_and_external:213
stderr[1]: Internal Error: invalid error code 1312d10 (Ring Index out of
range) in MPIU_Find_local_and_external:213


Changing the whole of that function to "return MPI_ERR_UNKNOWN;" still seems
to work fine.  Is there a way to be sure that the "MPIU_ERR_SETANDJUMP"
doesn't print anything?



Thanks,
Joe Ratterman
jratt at us.ibm.com


On Wed, Mar 18, 2009 at 2:09 PM, Pavan Balaji <balaji at mcs.anl.gov> wrote:

> Hi all,
>
> A new release of MPICH2 (1.1b1) is available from
> http://www.mcs.anl.gov/research/projects/mpich2/downloads/index.php?s=downloads
>
> This is a preview release in the MPICH2-1.1 series. MPICH2 developers,
> testers and other advanced users are encouraged to try this release out and
> let us know if you encounter any problems.
>
> The major additions in the 1.1b1 release are highlighted below.
>
> (Windows binaries are also available on the project website:
> http://www.mcs.anl.gov/research/projects/mpich2).
>
> Regards,
> The MPICH2 Team
>
> --------------------------------------------------------------------------
> Main changes in the 1.1 release
> ===============================
>
>  # OVERALL: Added MPI 2.1 support.
>
>  # OVERALL: Nemesis is now the default configuration channel with a
> completely new TCP communication module.
>
>  # OVERALL: Windows support for nemesis.
>
>  # OVERALL: Added a new Myrinet MX network module for nemesis.
>
>  # OVERALL: Initial support for shared-memory aware collective
> communication operations.  Currently MPI_Bcast, MPI_Reduce, MPI_Allreduce,
> and MPI_Scan.
>
>  # OVERALL: Improved handling of MPI Attributes.
>
>  # OVERALL: Support for BlueGene/P through the DCMF library (thanks to IBM
> for the patch).
>
>  # OVERALL: Added dynamic processes support for Nemesis.
>
>  # OVERALL: Added automatic as well as statically runtime configurable
> receive timeout variation for MPD (thanks to OSU for the patch).
>
>  # OVERALL: Improved performance for MPI_Allgatherv and MPI_Gatherv.
>
>  # PM/PMI: Initial support for the new Hydra process management framework
> (current support is for ssh and fork).
>
>  # ROMIO: Added support for MPI_Type_create_resized and
> MPI_Type_create_indexed_block datatypes in ROMIO.
>
>  # ROMIO: Optimized Lustre ADIO driver (thanks to Weikuan Yu for
>  initial work and Sun for further improvements).
>
>  # Many other bug fixes, memory leak fixes and code cleanup. A full list of
> changes is available using:
>
> svn log -r813:HEAD
> https://svn.mcs.anl.gov/repos/mpi/mpich2/tags/release/mpich2-1.1b1
>
>  ... or at the following link:
>
>
> https://trac.mcs.anl.gov/projects/mpich2/log/mpich2/tags/release/mpich2-1.1b1?action=follow_copy&rev=HEAD&stop_rev=813&mode=follow_copy
>
> --
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji <http://www.mcs.anl.gov/%7Ebalaji>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/mpich-discuss/attachments/20090330/16ed8aee/attachment.htm>