added check for gpuarray

theano/compile/function_module.py

@@ -13,6 +13,7 @@ from itertools import chain
 import time
 import warnings
 import numpy as np
+import pygpu
 
 import theano
 from theano import config, gof
@@ -1693,6 +1694,8 @@ class FunctionMaker(object):
         if self.sync:
             for i, inp in enumerate(input_storage):
                 if i in self.fgraph.update_mapping.values():
+                    if (hasattr(theano, "gpuarray") and
+                       isinstance(inp.data, pygpu.gpuarray.GpuArray)):
                         inp.data.sync()
 
         fn.profile = self.profile

theano/compile/tests/test_function_module.py

@@ -909,6 +909,7 @@ def test_empty_givens_updates():
 
 
 def test_sync():
+    if theano.config.device == 'cuda':
         x = T.fmatrix('x')
         w = theano.shared(np.random.rand(300, 500).astype('float32'), 'w')
         b = theano.shared(np.zeros((500)).astype('float32'), 'b')