Break out module_dm external subroutines into separate files #2069
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TYPE: enhancement
KEYWORDS: intel, compilation, llvm, memory
SOURCE: internal
DESCRIPTION OF CHANGES:
Problem:
The Intel oneAPI compilers (and others like nvhpc) struggle with some of the larger (15k+ lines of code) files within WRF. This causes intense memory usage that is not often available to the average user not in a resource-rich environment. This often limits compilation to single threaded if even possible or to a dedicated environment with enough memory if available. If neither of those is available to a user, they will be unable to use these configurations entirely.
Solution:
This PR focuses on the
module_dm
sections of code to reduce its individual file size to manageable levels. This and its helper subroutines are instead broken out into many smaller files.TESTS CONDUCTED:
Attached to this PR are plots of the respective effects of theses changes. Changes were tested with intel and gcc compilers, but only intel memory usage is shown as it exacerbates the memory usage issue.