[Neolith-users] New default compiler versions

[Pär Andersson]

Hello test users,

Intel have recently released version 10.1 of its Fortran and C/C++ compilers. 
Version 10.1.008 have now been made the default on Neolith. (Log out and back 
in to get the new default modules loaded.)

MAKE CLEAN!

The compilers should be comatible to object files generated by the previous 
default version (10.0.026) but we still strongly recomend that you still do 
a "make clean" or similar to remove old object files before building anything 
using the new version.

10.1 contains bugfixes, improved optimizations etc. You can review the 
complete release notes on Neolith in:

C/C++: /software/intel/cce/10.1.008/doc/Release_Notes.txt
Fortran: /software/intel/fce/10.1.008/doc/Release_Notes.txt

By the way, a good starting point when trying compiler optimization flags for 
best performance on Neolith is often "-O3 -xT -ipo" (or -ip if -ipo fails). 
Documentation about these and other available options are in the man pages.

regards
-- 
Pär Andersson
National Supercomputer Centre
Sweden