Several libraries have been updated on hexagon.
For maximum performance and stability users are encouraged to log out and in again and then recompile their programs and libraries.

Updates:

MPI:
xt-mpt 3.3.0 -> 3.4.0

Libs/math:
xt-libsci 10.3.6 -> 10.3.7
hdf5 1.8.2.3 -> 1.8.3.0
netcdf_hdf5parallell 4.0.0.3 -> 4.0.1.0
netcdf 4.0.0.3 -> 4.0.1.0
petsc 3.0.0.3 -> 3.0.0.4
acml 4.2.0 -> 4.3.0

Compiler:
xt-asyncpe (wrapper) 3.0 -> 3.1
pgi 8.0.6 -> 9.0.1

NOTES:

xt-mpt
Bug fixes related to SHMEM as well as Intel compiler.

hdf5/netcdf
New features and bugfixes.

See here for more information:
http://www.hdfgroup.org/ftp/HDF5/current/src/hdf5-1.8.3-RELEASE.txt

http://www.unidata.ucar.edu/software/netcdf/release-notes-4.0.1.html

petsc
Feature update: CASK 1.1, plus bugfixes.

CASK 1.1 includes new sparse matrix vector multiplication for
transposed matrices improves the performance by 5-30% depending
on nonzero pattern of the matrix.

Support for the Intel compiler.

ACML
New feature release. Note that this release does not support the pathscale compiler.

See ACML site for more information:
http://developer.amd.com/cpu/Libraries/acml/features/pages/default.aspx

PGI
New major release.

See PGI site for more information:
http://www.pgroup.com/doc/pgiwsrn901.pdf