Revert "add device attr for regularizer, test=develop (#24981)" (#25375)

This reverts commit ab5a1fb8.

python/paddle/fluid/optimizer.py

@@ -791,8 +791,8 @@ class Optimizer(object):
             params_grads = append_gradient_clip_ops(params_grads)
 
         # Add regularization if any
-        params_grads = append_regularization_ops(
-            params_grads, self.regularization, self._param_device_map)
+        params_grads = append_regularization_ops(params_grads,
+                                                 self.regularization)
 
         optimize_ops = self._create_optimization_pass(params_grads)
         return optimize_ops

python/paddle/fluid/regularizer.py

@@ -16,7 +16,7 @@ from __future__ import print_function
 import logging
 
 from . import framework
-from .framework import in_dygraph_mode, _varbase_creator, device_guard
+from .framework import in_dygraph_mode, _varbase_creator
 from . import core
 
 __all__ = ['L1Decay', 'L2Decay', 'L1DecayRegularizer', 'L2DecayRegularizer']
@@ -62,9 +62,7 @@ def _create_regularization_of_grad(param, grad, regularization=None):
     return new_grad
 
 
-def append_regularization_ops(parameters_and_grads,
-                              regularization=None,
-                              param_device_map=None):
+def append_regularization_ops(parameters_and_grads, regularization=None):
     """Create and add backward regularization Operators
 
     Creates and adds backward regularization operators in the BlockDesc.
@@ -95,18 +93,15 @@ def append_regularization_ops(parameters_and_grads,
         repeate_regularizer = False
         with framework.name_scope('regularization'):
             for param, grad in parameters_and_grads:
-                device = param_device_map[
-                    param.name] if param_device_map else None
                 if not repeate_regularizer and param.regularizer is not None and regularization is not None:
                     repeate_regularizer = True
                     logging.info(
                         "If regularizer of a Parameter has been set by 'fluid.ParamAttr' or 'fluid.WeightNormParamAttr' already. "
                         "The Regularization[%s] in Optimizer will not take effect, and it will only be applied to other Parameters!"
                         % regularization.__str__())
-                with device_guard(device):
                 with param.block.program._optimized_guard([param, grad]):
-                        new_grad = _create_regularization_of_grad(
-                            param, grad, regularization)
+                    new_grad = _create_regularization_of_grad(param, grad,
+                                                              regularization)
                     params_and_grads.append((param, new_grad))
     return params_and_grads