is called with
Important switches are:
-fconvert=big-endian -frecord-marker=4: With this flag set, binary files in
big_endianformat (the standard for UIO files) are automatically transformed to
little_endianand vice versa. In addition, the old 32-bit record marker convention is maintained and existing UIO files can be read.
-O3: General optimization flag.
-fopenmp: Activates the OpenMP directives, but causes CO5BOLD to crash - currently.
The appropriate UIO module is
I haven't found out how to use the standard modules, yet.
OpenMP does not work, yet. And the scalar code is significantly slower than code
compiled e.g. with the Intel compiler (see Sect. 3.7.11.
However, the factor is not prohibitive.
For not too demanding test runs the
gfortran compiler can already be useful.