Fix checkpoint recursion

codes/utils/util.py

@@ -47,7 +47,7 @@ def OrderedYaml():
 def checkpoint(fn, *args):
     enabled = options.loaded_options['checkpointing_enabled'] if 'checkpointing_enabled' in options.loaded_options.keys() else True
     if enabled:
-        return checkpoint(fn, *args)
+        return torch.utils.checkpoint.checkpoint(fn, *args)
     else:
         return fn(*args)
 
@@ -366,4 +366,4 @@ def recursively_detach(v):
         out = {}
         for k, t in v.items():
             out[k] = recursively_detach(t)
-        return out
+        return out