Fix scan test for python3. Run it on Jenkins.

.jenkins/jenkins_test2.sh

@@ -75,6 +75,7 @@ THEANO_GPUARRAY_TESTS="theano/gpuarray/tests \
                        theano/sandbox/tests/test_rng_mrg.py:test_consistency_GPUA_serial \
                        theano/sandbox/tests/test_rng_mrg.py:test_consistency_GPUA_parallel \
                        theano/sandbox/tests/test_rng_mrg.py:test_GPUA_full_fill \
-                       theano/scan_module/tests/test_scan.py:T_Scan_Gpuarray"
+                       theano/scan_module/tests/test_scan.py:T_Scan_Gpuarray \
+                       theano/scan_module/tests/test_scan_checkpoints.py:TestScanCheckpoint.test_memory"
 FLAGS="init_gpu_device=$DEVICE,gpuarray.preallocate=1000,mode=FAST_RUN,on_opt_error=raise,on_shape_error=raise,cmodule.age_thresh_use=604800"
 THEANO_FLAGS=${FLAGS} time nosetests --with-xunit --xunit-file=theanogpuarray_tests.xml ${THEANO_GPUARRAY_TESTS}

theano/scan_module/tests/test_scan_checkpoints.py

@@ -58,7 +58,7 @@ class TestScanCheckpoint(unittest.TestCase):
         f_check = theano.function(inputs=[self.A, self.k],
                                   outputs=self.grad_A_check)
         free_gmem = theano.gpuarray.type._context_reg[None].free_gmem
-        data = numpy.ones(free_gmem / 3000, dtype=numpy.float32)
+        data = numpy.ones(free_gmem // 3000, dtype=numpy.float32)
         # Check that it works with the checkpoints
         f_check(data, 1000)
         # Check that the basic scan fails in that case