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= PALM preprocessor options / define strings

PALM uses so-called preprocessor define strings for conditional compilation of the code. Additionally, some preprocessor options are used to replace specific character strings. The following list gives a complete overview of the define strings used in the PALM code, and of additional preprocessor options that are used to replace strings in the FORTRAN code.

The define strings are used to activate specific parts of the code. For activation, compiler option {{{-Dactivation_string}}} has to be used. All activation strings used in PALM start with two underscores, e.g. {{{__parallel}}} 


||='''activation_string''' =||='''meaning''' =||
|-----------
||__dvrp_graphics     ||      ||
||__fftw              ||      ||
||__ibm               ||      ||
||__intel_compiler    ||      ||
||__logging           ||      ||
||__mpifh             ||      ||
||__nec               ||      ||
||__netcdf            ||      ||
||__netcdf4           ||      ||
||__netcdf4_parallel  ||      ||
||__nopointer         ||      ||
||__parallel          ||test  ||
||__rrtmg             ||      ||


Preprocessor options used for string replacement:

||='''option''' =||='''meaning''' =||
|-----------
||-DMPI_REAL=MPI_DOUBLE_PRECISION    ||      ||
||-DMPI_2REAL=MPI_2DOUBLE_PRECISION  ||      ||