Disable compute_test_values for mpi_roundtrip.

theano/tensor/tests/_test_mpi_roundtrip.py

@@ -4,6 +4,7 @@ from __future__ import absolute_import, print_function, division
 
 from mpi4py import MPI
 import theano
+from theano.configparser import change_flags
 from theano.tensor.io import send, recv, mpi_cmps
 from theano.gof.sched import sort_schedule_fn
 import numpy as np
@@ -27,7 +28,8 @@ scheduler = sort_schedule_fn(*mpi_cmps)
 mode = theano.Mode(optimizer=None,
                    linker=theano.OpWiseCLinker(schedule=scheduler))
 
-if rank == 0:
+with change_flags(compute_test_value='off'):
+    if rank == 0:
         x = theano.tensor.matrix('x', dtype=dtype)
         y = x + 1
         send_request = send(y, 1, 11)
@@ -45,7 +47,7 @@ if rank == 0:
         # The parent test will look for "True" in the output
         stdout.write(str(same))
 
-if rank == 1:
+    if rank == 1:
 
         y = recv(shape, dtype, 0, 11)
         z = y * 2