distributed_data_object now uses the d2o_configuration in order to determine...

distributed_data_object now uses the d2o_configuration in order to determine the default communicator.

d2o/distributed_data_object.py

@@ -167,11 +167,9 @@ class distributed_data_object(object):
     def __init__(self, global_data=None, global_shape=None, dtype=None,
                  local_data=None, local_shape=None,
                  distribution_strategy=None, hermitian=False,
-                 alias=None, path=None, comm=MPI.COMM_WORLD,
+                 alias=None, path=None, comm=getattr(MPI, gc['default_comm']),
                  copy=True, *args, **kwargs):
 
-        # TODO: allow init with empty shape
-
         if isinstance(global_data, tuple) or isinstance(global_data, list):
             global_data = np.array(global_data, copy=False)
         if isinstance(local_data, tuple) or isinstance(local_data, list):