1# Copyright 2015 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"""Tests for tensorflow.python.training.saver.py."""
16
17from __future__ import absolute_import
18from __future__ import division
19from __future__ import print_function
20
21import os
22
23from tensorflow.core.protobuf import saver_pb2
24from tensorflow.python.client import session
25from tensorflow.python.framework import constant_op
26from tensorflow.python.framework import dtypes
27from tensorflow.python.framework import errors_impl
28from tensorflow.python.framework import ops
29from tensorflow.python.ops import variables
30from tensorflow.python.platform import test
31from tensorflow.python.training import saver
32
33
34class SaverLargeVariableTest(test.TestCase):
35
36  # NOTE: This is in a separate file from saver_test.py because the
37  # large allocations do not play well with TSAN, and cause flaky
38  # failures.
39  def testLargeVariable(self):
40    save_path = os.path.join(self.get_temp_dir(), "large_variable")
41    with session.Session("", graph=ops.Graph()) as sess:
42      # Declare a variable that is exactly 2GB. This should fail,
43      # because a serialized checkpoint includes other header
44      # metadata.
45      with ops.device("/cpu:0"):
46        var = variables.Variable(
47            constant_op.constant(
48                False, shape=[2, 1024, 1024, 1024], dtype=dtypes.bool))
49      save = saver.Saver(
50          {
51              var.op.name: var
52          }, write_version=saver_pb2.SaverDef.V1)
53      var.initializer.run()
54      with self.assertRaisesRegexp(errors_impl.InvalidArgumentError,
55                                   "Tensor slice is too large to serialize"):
56        save.save(sess, save_path)
57
58
59if __name__ == "__main__":
60  test.main()
61