The first section of namcouple uses some predefined keywords prefixed by the $ sign to locate the related information. The $ sign must be the first non-blank character on the line but can be in any column. 8 keywords are used by OASIS3-MCT and 5 of these are optional :
The first number (that can be modified at runtime with the oasis_set_debug routine, see section 2.2.9) may be:
The second number can also be set to -1 to activate the lucia tool that can be used to perform an analysis of the coupled components load balance. More information can be found in the README file in oasis3-mct/util/lucia directory and report mentioned therein.
Note that the ability to check mapping files at runtime in OASIS3-MCT is limited. It is always recommended that mapping files be analyzed offline before long production runs are carried out. Checks can be done to make sure the source and destination indices are valid, that weights values are reasonable (for instance, between 0 and 1, although this will depend on the mapping method), and that the sum of weights on the destination cells are reasonable (for instance, 1, in many cases). In addition, offline tests can be run with analytical functions to verify conservation, gradient preserving features and other characteristics associated with the particular mapping approach.