CCE

To use the Cray compilers the appropriate module file needs to be loaded. Cray compilers are available only on Lindgren.

Lindgren

In order to use the cray compilers on Lindgren, it is necessary to have the PrgEnv-cray loaded. When that module is loaded the cc, CC and ftn scripts will automatically use the Cray compiler.

When you log into Lindgren  PrgEnv-pgi is the default, to swap to the Cray PrgEnv use the command

module swap PrgEnv-pgi PrgEnv-cray

When you first load the Intel PrgEnv the default cray compiler will be active. To see which versions of the the Cray compiler are available use

module avail cce

To use a different version of the cray compiler you can use for example

module swap cce/7.4.0 cce/7.3.1.101

To check the version of Cray compiler, simply type:

cc -V

 As stated in the lindgren compiling section the cc, CC and ftn scripts automatically link the different librarys depending on which modules are loaded. FFTW version 2 is a bit more complicted however.

The available drivers (also for linking of MPI applications) are:

• Fortran programs: ftn
• C programs: cc
• C++ programs: CC

cc -o myprog myprog.c

ftn -o myprog myprog.f

For more information on the various compiler flags you read the various man pages e.g.

man crayftn
man craycc