GNU Compilers

Fortran, C and C++ compilers produced by the GNU Project. 

Availability and Restrictions


GNU compilers are available on all our clusters. These are the versions currently available:

Compilation Guide

As a general recommendation, we suggest selecting the newest compilers available for a new project. For repeatability, you may not want to change compilers in the middle of an experiment.

Pitzer Compilers

The Skylake processors that make up Pitzer support the AVX512 instruction set, but you must set the correct compiler flags to take advantage of it. AVX512 has the potential to speed up your code by a factor of 8 or more, depending on the compiler and options you would otherwise use.