Hexagon has updated software and libraries. To get the performance and stability improvements the applications needs to be recompiled.

MPI
xt-mpt 5.1.0 -> 5.1.1

Compilers/wrappers/debug
PGI 10.8.0 -> 10.9.0
chapel 1.1.1 -> 1.2.0
xt-asyncpe 4.3 -> 4.4
stat 1.1.0 -> 1.1.1

Scientific libraries
PETSc 3.1.02 -> 3.1.03

NOTES:

xt-mpt

- New SHMEM environment variable, SHMEM_MEMINFO_DISPLAY, to
display the layout of the SHMEM memory regions.

Several bugs were also fixed in this release and are listed below.

742474,744363,754252,763505,764480 - Prevent attempted
oversubscription
of memory during shmem_init() on XT systems

765571, 760251, 761685 - compiler warning about gethostbyname
for all MPI programs


xt-asyncpe
Bugs fixed in this release:
747448 f77 command for PGI should be deprecated
759747 Add LIBSCI_X86_64 variable for cce PE testing
762235 Intel ftn ld -openmp vs xtpe-barcelona for libsci library
- mult
def libifcore.a & libifcoremt.a
764431 Left over (-p acml) failures from the EDG-MERGE with both
ftn and cc
764491 Add accelerator targeting module
764504 linux-f77 script tries to link in seastar libraries on XE
system
764942 Legal C++ code fails with multiple instance error on esLogin
765602 xt-asyncpe module should define -D__x86_64__ when
PrgEnv-gnu is
loaded

Differences:
------------
Beginning with xt-asyncpe 4.4, the f77 script for pgi is now aliased to ftn. In a future release, it will be removed altogether.

PETSc
PETSc-3.1.03 module includes ParMetis-3.1.1 library, which can be
called
through PETSc's API. The Cray PETSc-3.1.03 is equivalent to the
official
patch release of PETSc-3.1-p4 by Argonne National Laboratory, and
allows
users to install SLEPc-3.1 package (an eigenvalue solver package from
Universidad Politecnica de Valencia).

Bugs fixed in this release:
763837 petsc-complex will not link -dynamic

PGI
Features of PGI 10.9.0 are documented at:
http://www.pgroup.com/doc/pgiwsrn109.pdf
The following bugs are fixed in the PGI 10.9.0 release.
763009 pgcc -O3 PGC-S-0000-Internal compiler error [TPR 17173]
763428 cc20 option on -ta=nvidia causes error [17191]
764082 PGI internal compiler error with COPYIN and THREADPRIVATE
clause [17213]