craygnu CrayGNU toolchain: GCC and MPI via Cray compiler drivers + LibSci (PrgEnv-gnu) and Cray FFTW Authors: Petar Forai (IMP/IMBA, Austria) Kenneth Hoste (Ghent University) CrayGNU ¶ Bases: CrayPEGCC, CrayMPICH, LibSci Compiler toolchain for Cray Programming Environment for GCC compilers (PrgEnv-gnu).