def testSaveRestoreNumpyState(self):
directory = self.get_temp_dir()
prefix = os.path.join(directory, "ckpt")
save_state = python_state.NumpyState()
saver = util.Checkpoint(numpy=save_state)
save_state.a = numpy.ones([2, 2])
save_state.b = numpy.ones([2, 2])
save_state.b = numpy.zeros([2, 2])
self.assertAllEqual(numpy.ones([2, 2]), save_state.a)
self.assertAllEqual(numpy.zeros([2, 2]), save_state.b)
first_save_path = saver.save(prefix)
save_state.a[1, 1] = 2.
second_save_path = saver.save(prefix)
load_state = python_state.NumpyState()
loader = util.Checkpoint(numpy=load_state)
loader.restore(first_save_path).initialize_or_restore()
self.assertAllEqual(numpy.ones([2, 2]), load_state.a)
self.assertAllEqual(numpy.zeros([2, 2]), load_state.b)
load_state.a[0, 0] = 42.
self.assertAllEqual([[42., 1.], [1., 1.]], load_state.a)
loader.restore(first_save_path).run_restore_ops()
self.assertAllEqual(numpy.ones([2, 2]), load_state.a)
loader.restore(second_save_path).run_restore_ops()
self.assertAllEqual([[1., 1.], [1., 2.]], load_state.a)
self.assertAllEqual(numpy.zeros([2, 2]), load_state.b)
def testDocstringExample(self):
arrays = python_state.NumpyState()
checkpoint = util.Checkpoint(numpy_arrays=arrays)
arrays.x = numpy.zeros([3, 4])
save_path = checkpoint.save(os.path.join(self.get_temp_dir(), "ckpt"))
arrays.x[1, 1] = 4.
checkpoint.restore(save_path)
self.assertAllEqual(numpy.zeros([3, 4]), arrays.x)
second_checkpoint = util.Checkpoint(
numpy_arrays=python_state.NumpyState())
second_checkpoint.restore(save_path)
self.assertAllEqual(numpy.zeros([3, 4]),
second_checkpoint.numpy_arrays.x)
def testNoGraphPollution(self):
graph = ops.Graph()
with graph.as_default(), session.Session():
directory = self.get_temp_dir()
prefix = os.path.join(directory, "ckpt")
save_state = python_state.NumpyState()
saver = util.Checkpoint(numpy=save_state)
save_state.a = numpy.ones([2, 2])
save_path = saver.save(prefix)
saver.restore(save_path)
graph.finalize()
saver.save(prefix)
save_state.a = numpy.zeros([2, 2])
saver.save(prefix)
saver.restore(save_path)
def testNoMixedNumpyStateTF(self):
save_state = python_state.NumpyState()
save_state.a = numpy.ones([2, 2])
with self.assertRaises(NotImplementedError):
save_state.v = variables.Variable(1.)