The fundamental concept for accessing memory through Umpire is an
:class:`umpire:Allocator`. In FORTRAN, this means using the type
UmpireAllocator. This type provides an allocate_pointer function to
allocate raw memory, and a generic allocate procedure that takes an array
pointer and an array of dimensions and will allocate the correct amount of
memory.
As with the native C++ interface, all allocators are accessed via the
:class:`umpire::ResourceManager`. In the FORTRAN API, there is a corresponding
UmpireResourceManager type. To get an UmpireAllocator:
.. literalinclude:: ../../../../examples/tutorial/fortran/tut_allocator.f
:lines: 17-18
In this example we fetch the allocator by id, using 0 means you will always get
a host allocator. Once you have an UmpireAllocator, you can use it to allocate and
deallocate memory:
.. literalinclude:: ../../../../examples/tutorial/fortran/tut_allocator.f
:lines: 20-24
In this case, we allocate a one-dimensional array using the generic
allocate function.