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1# Copyright 2016 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"""Debugger Wrapper Session Consisting of a Local Curses-based CLI."""
16import os
17import tempfile
18
19from tensorflow.python.client import session
20from tensorflow.python.debug.wrappers import dumping_wrapper
21from tensorflow.python.debug.wrappers import hooks
22from tensorflow.python.framework import constant_op
23from tensorflow.python.framework import dtypes
24from tensorflow.python.framework import test_util
25from tensorflow.python.ops import state_ops
26from tensorflow.python.ops import variables
27from tensorflow.python.platform import googletest
28from tensorflow.python.training import monitored_session
29
30
31@test_util.run_v1_only("Sessions are not available in TF 2.x")
32class DumpingDebugWrapperDiskUsageLimitTest(test_util.TensorFlowTestCase):
33
34  @classmethod
35  def setUpClass(cls):
36    # For efficient testing, set the disk usage bytes limit to a small
37    # number (10).
38    os.environ["TFDBG_DISK_BYTES_LIMIT"] = "10"
39
40  def setUp(self):
41    self.session_root = tempfile.mkdtemp()
42
43    self.v = variables.Variable(10.0, dtype=dtypes.float32, name="v")
44    self.delta = constant_op.constant(1.0, dtype=dtypes.float32, name="delta")
45    self.eta = constant_op.constant(-1.4, dtype=dtypes.float32, name="eta")
46    self.inc_v = state_ops.assign_add(self.v, self.delta, name="inc_v")
47    self.dec_v = state_ops.assign_add(self.v, self.eta, name="dec_v")
48
49    self.sess = session.Session()
50    self.sess.run(self.v.initializer)
51
52  def testWrapperSessionNotExceedingLimit(self):
53    def _watch_fn(fetches, feeds):
54      del fetches, feeds
55      return "DebugIdentity", r"(.*delta.*|.*inc_v.*)", r".*"
56    sess = dumping_wrapper.DumpingDebugWrapperSession(
57        self.sess, session_root=self.session_root,
58        watch_fn=_watch_fn, log_usage=False)
59    sess.run(self.inc_v)
60
61  def testWrapperSessionExceedingLimit(self):
62    def _watch_fn(fetches, feeds):
63      del fetches, feeds
64      return "DebugIdentity", r".*delta.*", r".*"
65    sess = dumping_wrapper.DumpingDebugWrapperSession(
66        self.sess, session_root=self.session_root,
67        watch_fn=_watch_fn, log_usage=False)
68    # Due to the watch function, each run should dump only 1 tensor,
69    # which has a size of 4 bytes, which corresponds to the dumped 'delta:0'
70    # tensor of scalar shape and float32 dtype.
71    # 1st run should pass, after which the disk usage is at 4 bytes.
72    sess.run(self.inc_v)
73    # 2nd run should also pass, after which 8 bytes are used.
74    sess.run(self.inc_v)
75    # 3rd run should fail, because the total byte count (12) exceeds the
76    # limit (10)
77    with self.assertRaises(ValueError):
78      sess.run(self.inc_v)
79
80  def testHookNotExceedingLimit(self):
81    def _watch_fn(fetches, feeds):
82      del fetches, feeds
83      return "DebugIdentity", r".*delta.*", r".*"
84    dumping_hook = hooks.DumpingDebugHook(
85        self.session_root, watch_fn=_watch_fn, log_usage=False)
86    mon_sess = monitored_session._HookedSession(self.sess, [dumping_hook])
87    mon_sess.run(self.inc_v)
88
89  def testHookExceedingLimit(self):
90    def _watch_fn(fetches, feeds):
91      del fetches, feeds
92      return "DebugIdentity", r".*delta.*", r".*"
93    dumping_hook = hooks.DumpingDebugHook(
94        self.session_root, watch_fn=_watch_fn, log_usage=False)
95    mon_sess = monitored_session._HookedSession(self.sess, [dumping_hook])
96    # Like in `testWrapperSessionExceedingLimit`, the first two calls
97    # should be within the byte limit, but the third one should error
98    # out due to exceeding the limit.
99    mon_sess.run(self.inc_v)
100    mon_sess.run(self.inc_v)
101    with self.assertRaises(ValueError):
102      mon_sess.run(self.inc_v)
103
104
105if __name__ == "__main__":
106  googletest.main()
107