"Balay, Satish" <[email protected]> writes:

Currently fortran modules are built sequentially [due to dependencies]

Perhaps there is a way to split them up - and introduce some parallelism..

I think we would have to follow a pattern similar to the petsc*types.h headers where we would have a module that only defines types (needed by higher level PETSc packages) and a separate module that uses the types module and provides all the interfaces. There would still be dependencies between the types modules, but not between the interfaces (because the Fortran interface modules don't call other interfaces). For incremental builds when using ccache, rebuilding the modules can easily dominate execution time.