def find_all_supported_platforms():
###############################################################################
"""
Returns a set of all ACME supported platforms as defined in the
XML configuration file config_machines.xml in the ACME source
tree. A platform is defined by a triple (machine name, compiler,
mpi library).
"""
machines = CIME.utils.get_machines()
machobj = Machines(machine=machine)
platform_set = set()
for machine in machines:
machobj.set_machine(machine)
compilers, mpilibs = machobj.get_value("COMPILERS"), machobj.get_value("MPILIBS")
for compiler in compilers:
for mpilib in mpilibs:
platform_set.add((machine, compiler, mpilib))
return list(platform_set)
