Fix dist demo var type error (#8600)

* Fix dist demo error

* revert trainer_id

Author: Yancey

python/paddle/fluid/framework.py

@@ -784,6 +784,7 @@ def rename_var(self, name, new_name):
         elif type(v) == Variable:
             var = Variable(
                 self,
+                type=v.type,
                 name=new_name,
                 error_clip=error_clip,
                 stop_gradient=stop_gradient)

python/paddle/fluid/tests/book_distribute/notest_dist_fit_a_line.py

@@ -48,6 +48,7 @@
 # run as trainer or parameter server
 training_role = os.getenv("TRAINING_ROLE",
                           "TRAINER")  # get the training role: trainer/pserver
+
 t.transpile(optimize_ops, params_grads, pservers=pserver_endpoints, trainers=2)
 
 if training_role == "PSERVER":
@@ -65,8 +66,6 @@
 
     PASS_NUM = 100
     for pass_id in range(PASS_NUM):
-        fluid.io.save_persistables(exe, "./fit_a_line.model/")
-        fluid.io.load_persistables(exe, "./fit_a_line.model/")
         for data in train_reader():
             avg_loss_value = exe.run(trainer_prog,
                                      feed=feeder.feed(data),

python/paddle/fluid/tests/book_distribute/notest_dist_image_classification.py

@@ -138,6 +138,7 @@ def conv_block(input, num_filter, groups, dropouts):
 # run as trainer or parameter server
 training_role = os.getenv("TRAINING_ROLE",
                           "TRAINER")  # get the training role: trainer/pserver
+
 t.transpile(
     optimize_ops, params_grads, pservers=pserver_endpoints, trainers=TRAINERS)
 

python/paddle/fluid/tests/book_distribute/notest_dist_label_semantic_roles.py

@@ -191,6 +191,7 @@ def main():
     # run as trainer or parameter server
     training_role = os.getenv(
         "TRAINING_ROLE", "TRAINER")  # get the training role: trainer/pserver
+
     t.transpile(
         optimize_ops, params_grads, pservers=pserver_endpoints, trainers=2)
 

python/paddle/fluid/tests/book_distribute/notest_dist_word2vec.py

@@ -82,6 +82,7 @@
 # run as trainer or parameter server
 training_role = os.getenv("TRAINING_ROLE",
                           "TRAINER")  # get the training role: trainer/pserver
+
 t.transpile(
     optimize_ops, params_grads, pservers=pserver_endpoints, trainers=TRAINERS)
 if training_role == "PSERVER":
@@ -97,9 +98,10 @@
         feed_list=[first_word, second_word, third_word, forth_word, next_word],
         place=place)
     exe.run(fluid.default_startup_program())
+    trainer_prog = t.get_trainer_program()
     for pass_id in range(PASS_NUM):
         for data in train_reader():
-            avg_cost_np = exe.run(t.get_trainer_program(),
+            avg_cost_np = exe.run(trainer_prog,
                                   feed=feeder.feed(data),
                                   fetch_list=[avg_cost])
             print("avg_cost_np", avg_cost_np)

python/paddle/fluid/tests/book_distribute/notest_machine_translation.py

@@ -115,6 +115,7 @@ def main():
     # run as trainer or parameter server
     training_role = os.getenv(
         "TRAINING_ROLE", "TRAINER")  # get the training role: trainer/pserver
+
     t.transpile(
         optimize_ops, params_grads, pservers=pserver_endpoints, trainers=2)
 

python/paddle/fluid/tests/book_distribute/notest_recognize_digits_conv_dist.py

@@ -64,11 +64,7 @@
 
 t = fluid.DistributeTranspiler()
 t.transpile(
-    optimize_ops,
-    params_grads,
-    0,
-    pservers=pserver_endpoints,
-    trainers=trainers)
+    optimize_ops, params_grads, pservers=pserver_endpoints, trainers=trainers)
 
 if training_role == "PSERVER":
     pserver_prog = t.get_pserver_program(current_endpoint)

python/paddle/fluid/tests/book_distribute/notest_recommender_system_dist.py

@@ -171,6 +171,7 @@ def main():
     current_endpoint = os.getenv("SERVER_ENDPOINT")
     # run as trainer or parameter server
     training_role = os.getenv("TRAINING_ROLE", "TRAINER")
+
     t.transpile(
         optimize_ops, params_grads, pservers=pserver_endpoints, trainers=2)
 

python/paddle/fluid/tests/book_distribute/notest_understand_sentiment_conv_dist.py

@@ -90,6 +90,7 @@ def main():
     # run as trainer or parameter server
     training_role = os.getenv(
         "TRAINING_ROLE", "TRAINER")  # get the training role: trainer/pserver
+
     t.transpile(
         optimize_ops, params_grads, pservers=pserver_endpoints, trainers=2)
 

python/paddle/fluid/tests/book_distribute/notest_understand_sentiment_dynamic_lstm.py

@@ -102,6 +102,7 @@ def main():
     # run as trainer or parameter server
     training_role = os.getenv(
         "TRAINING_ROLE", "TRAINER")  # get the training role: trainer/pserver
+
     t.transpile(
         optimize_ops, params_grads, pservers=pserver_endpoints, trainers=2)