1 # Copyright 2017 The TensorFlow Authors. All Rights Reserved. 2 # 3 # Licensed under the Apache License, Version 2.0 (the "License"); 4 # you may not use this file except in compliance with the License. 5 # You may obtain a copy of the License at 6 # 7 # http://www.apache.org/licenses/LICENSE-2.0 8 # 9 # Unless required by applicable law or agreed to in writing, software 10 # distributed under the License is distributed on an "AS IS" BASIS, 11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 # See the License for the specific language governing permissions and 13 # limitations under the License. 14 # ============================================================================== 15 """Test cases for XLA devices.""" 16 17 from __future__ import absolute_import 18 from __future__ import division 19 from __future__ import print_function 20 21 from tensorflow.python.client import session as session_lib 22 from tensorflow.python.framework import dtypes 23 from tensorflow.python.framework import ops 24 from tensorflow.python.ops import array_ops 25 from tensorflow.python.platform import test 26 27 28 class XlaDeviceTest(test.TestCase): 29 30 def testCopies(self): 31 """Tests that copies between GPU and XLA devices work.""" 32 if not test.is_gpu_available(): 33 return 34 35 with session_lib.Session() as sess: 36 x = array_ops.placeholder(dtypes.float32, [2]) 37 with ops.device("GPU"): 38 y = x * 2 39 with ops.device("device:XLA_CPU:0"): 40 z = y * y 41 with ops.device("GPU"): 42 w = y + z 43 result = sess.run(w, {x: [1.5, 0.5]}) 44 self.assertAllClose(result, [12., 2.], rtol=1e-3) 45 46 47 if __name__ == "__main__": 48 test.main() 49
