keep seed in dist transpiler

better test

python/paddle/fluid/tests/unittests/test_dist_se_resnext.py

@@ -19,6 +19,7 @@ import math
 
 import unittest
 import os
+import sys
 import signal
 import subprocess
 
@@ -56,7 +57,7 @@ class TestDistSeResneXt2x2(unittest.TestCase):
             except os.error:
                 retry_times -= 1
 
-    def no_test_with_place(self):
+    def test_with_place(self):
         # *ATTENTION* THIS TEST NEEDS AT LEAST 2GPUS TO RUN
         required_envs = {
             "PATH": os.getenv("PATH"),
@@ -70,9 +71,15 @@ class TestDistSeResneXt2x2(unittest.TestCase):
         local_cmd = "%s dist_se_resnext.py trainer %s 0 %s %d FLASE" % \
             (self._python_interp, "127.0.0.1:1234", "127.0.0.1:1234", 1)
         local_proc = subprocess.Popen(
-            local_cmd.split(" "), stdout=subprocess.PIPE, env=env_local)
+            local_cmd.split(" "),
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            env=env_local)
         local_proc.wait()
-        local_ret = local_proc.stdout.read()
+        out, err = local_proc.communicate()
+        local_ret = out
+        sys.stderr.write('local_loss: %s\n' % local_ret)
+        sys.stderr.write('local_stderr: %s\n' % err)
 
         # Run dist train to compare with local results
         ps0, ps1 = self.start_pserver()
@@ -92,13 +99,22 @@ class TestDistSeResneXt2x2(unittest.TestCase):
         FNULL = open(os.devnull, 'w')
 
         tr0_proc = subprocess.Popen(
-            tr0_cmd.split(" "), stdout=subprocess.PIPE, stderr=FNULL, env=env0)
+            tr0_cmd.split(" "),
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            env=env0)
         tr1_proc = subprocess.Popen(
-            tr1_cmd.split(" "), stdout=subprocess.PIPE, stderr=FNULL, env=env1)
+            tr1_cmd.split(" "),
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            env=env1)
 
         tr0_proc.wait()
         tr1_proc.wait()
-        loss_data0 = tr0_proc.stdout.read()
+        out, err = tr0_proc.communicate()
+        sys.stderr.write('dist_stderr: %s\n' % err)
+        loss_data0 = out
+        sys.stderr.write('dist_loss: %s\n' % loss_data0)
         lines = loss_data0.split("\n")
         dist_first_loss = eval(lines[0].replace(" ", ","))[0]
         dist_last_loss = eval(lines[1].replace(" ", ","))[0]

python/paddle/fluid/transpiler/distribute_transpiler.py

@@ -347,6 +347,7 @@ class DistributeTranspiler(object):
 
         # step1
         pserver_program = Program()
+        pserver_program.random_seed = self.origin_program.random_seed
         # step2: Create vars to receive vars at parameter servers.
         recv_inputs = []
         for v in self.param_grad_ep_mapping[endpoint]["params"]:
@@ -544,6 +545,7 @@ class DistributeTranspiler(object):
         """
         s_prog = Program()
         orig_s_prog = default_startup_program()
+        s_prog.random_seed = orig_s_prog.random_seed
         params = self.param_grad_ep_mapping[endpoint]["params"]
 
         def _get_splited_name_and_shape(varname):