def testNested(self):
device_map = values.ReplicaDeviceMap((_device_str(0), _device_str(1)))
result = values.regroup(device_map,
(_nested_value("1"), _nested_value("2")))
self.assertIsInstance(result, tuple)
self.assertEqual(3, len(result))
self._is_per_replica(result[0], ["a1", "a2"])
self._is_per_replica(result[2], ["h1", "h2"])
self.assertIsInstance(result[1], list)
self.assertEqual(3, len(result[1]))
self._is_per_replica(result[1][0], ["b1", "b2"])
self._is_per_replica(result[1][2], ["g1", "g2"])
self.assertIsInstance(result[1][1], dict)
self.assertEqual(set(["c", "e"]), set(result[1][1].keys()))
self._is_per_replica(result[1][1]["c"], ["d1", "d2"])
self._is_per_replica(result[1][1]["e"], ["f1", "f2"])
# Also test that we can undo the merge using select_replica()
self.assertEqual(_nested_value("1"),
values.select_replica(0, result))
self.assertEqual(_nested_value("2"),
values.select_replica(1, result))
# select_device_mirrored() should fail due to non-mirrored values
with self.assertRaises(TypeError):
values.select_device_mirrored(_device_str(0), result)
with self.assertRaises(TypeError):
values.select_device_mirrored(_device_str(1), result)
def testWrapClass(self):
# Normally a mirrored value would be the same across devices, but
# for a test it is convenient to be able to tell the values apart.
device_map = values.ReplicaDeviceMap((_device_str(0), _device_str(1)))
result = values.regroup(device_map,
(_nested_value("1"), _nested_value("2")),
values.Mirrored)
self.assertIsInstance(result, tuple)
self.assertEqual(3, len(result))
self._is_per_replica(result[0], ["a1", "a2"], values.Mirrored)
self._is_per_replica(result[2], ["h1", "h2"], values.Mirrored)
self.assertIsInstance(result[1], list)
self.assertEqual(3, len(result[1]))
self._is_per_replica(result[1][0], ["b1", "b2"], values.Mirrored)
self._is_per_replica(result[1][2], ["g1", "g2"], values.Mirrored)
self.assertIsInstance(result[1][1], dict)
self.assertEqual(set(["c", "e"]), set(result[1][1].keys()))
self._is_per_replica(result[1][1]["c"], ["d1", "d2"], values.Mirrored)
self._is_per_replica(result[1][1]["e"], ["f1", "f2"], values.Mirrored)
# Also test that we can undo the merge using select_replica()
self.assertEqual(_nested_value("1"),
values.select_replica(0, result))
self.assertEqual(_nested_value("2"),
values.select_replica(1, result))
# Values are marked as mirrored, so select_device_mirrored() is allowed.
self.assertEqual(_nested_value("1"),
values.select_device_mirrored(_device_str(0), result))
self.assertEqual(_nested_value("2"),
values.select_device_mirrored(_device_str(1), result))
def testNested(self):
device_map = values.ReplicaDeviceMap((_device_str(0), _device_str(1)))
result = values.regroup(device_map,
(_nested_value("1"), _nested_value("2")))
self.assertIsInstance(result, tuple)
self.assertEqual(3, len(result))
self._is_per_replica(result[0], ["a1", "a2"])
self._is_per_replica(result[2], ["h1", "h2"])
self.assertIsInstance(result[1], list)
self.assertEqual(3, len(result[1]))
self._is_per_replica(result[1][0], ["b1", "b2"])
self._is_per_replica(result[1][2], ["g1", "g2"])
self.assertIsInstance(result[1][1], dict)
self.assertEqual(set(["c", "e"]), set(result[1][1].keys()))
self._is_per_replica(result[1][1]["c"], ["d1", "d2"])
self._is_per_replica(result[1][1]["e"], ["f1", "f2"])
# Also test that we can undo the merge using select_replica()
self.assertEqual(_nested_value("1"),
values.select_replica(0, result))
self.assertEqual(_nested_value("2"),
values.select_replica(1, result))
# select_device_mirrored() should fail due to non-mirrored values
with self.assertRaises(TypeError):
values.select_device_mirrored(_device_str(0), result)
with self.assertRaises(TypeError):
values.select_device_mirrored(_device_str(1), result)
def testWrapClass(self):
# Normally a mirrored value would be the same across devices, but
# for a test it is convenient to be able to tell the values apart.
device_map = values.ReplicaDeviceMap((_device_str(0), _device_str(1)))
result = values.regroup(device_map,
(_nested_value("1"), _nested_value("2")),
values.Mirrored)
self.assertIsInstance(result, tuple)
self.assertEqual(3, len(result))
self._is_per_replica(result[0], ["a1", "a2"], values.Mirrored)
self._is_per_replica(result[2], ["h1", "h2"], values.Mirrored)
self.assertIsInstance(result[1], list)
self.assertEqual(3, len(result[1]))
self._is_per_replica(result[1][0], ["b1", "b2"], values.Mirrored)
self._is_per_replica(result[1][2], ["g1", "g2"], values.Mirrored)
self.assertIsInstance(result[1][1], dict)
self.assertEqual(set(["c", "e"]), set(result[1][1].keys()))
self._is_per_replica(result[1][1]["c"], ["d1", "d2"], values.Mirrored)
self._is_per_replica(result[1][1]["e"], ["f1", "f2"], values.Mirrored)
# Also test that we can undo the merge using select_replica()
self.assertEqual(_nested_value("1"),
values.select_replica(0, result))
self.assertEqual(_nested_value("2"),
values.select_replica(1, result))
# Values are marked as mirrored, so select_device_mirrored() is allowed.
self.assertEqual(_nested_value("1"),
values.select_device_mirrored(_device_str(0), result))
self.assertEqual(_nested_value("2"),
values.select_device_mirrored(_device_str(1), result))
def _update_non_slot(self, colocate_with, fn, args, kwargs, group):
assert isinstance(colocate_with, tuple)
# TODO(josh11b): In eager mode, use one thread per device.
updates = []
for i, d in enumerate(colocate_with):
name = "update_%d" % i
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
updates.append(fn(*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs)))
return values.update_regroup(self, self._device_map, updates, group)
def _update_non_slot(self, colocate_with, fn, args, kwargs, group):
assert isinstance(colocate_with, list)
# TODO(josh11b): In eager mode, use one thread per device.
updates = {}
for d in colocate_with:
name = "update_%d" % self._device_index.get(d)
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
updates[d] = fn(*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs))
return values.update_regroup(self, updates, group)
def _update_non_slot(self, colocate_with, fn, args, kwargs, group):
assert isinstance(colocate_with, tuple)
# TODO(josh11b): In eager mode, use one thread per device.
updates = []
for i, d in enumerate(colocate_with):
name = "update_%d" % i
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
updates.append(fn(*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs)))
return values.update_regroup(self, self._device_map, updates, group)
def _update(self, var, fn, args, kwargs, group):
# TODO(josh11b): In eager mode, use one thread per device.
assert isinstance(var, values.DistributedVariable)
updates = []
for i, (d, v) in enumerate(zip(var.devices, var.values)):
name = "update_%d" % i
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
# If args and kwargs are not mirrored, the value is returned as is.
updates.append(fn(v,
*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs)))
return values.update_regroup(self, self._device_map, updates, group)
def _update(self, var, fn, args, kwargs, group):
# TODO(josh11b): In eager mode, use one thread per device.
assert isinstance(var, values.DistributedVariable)
updates = {}
for d, v in var._index.items(): # pylint: disable=protected-access
name = "update_%d" % self._device_index.get(d)
with ops.device(d), distribute_lib.UpdateContext(
d), ops.name_scope(name):
# If args and kwargs are not mirrored, the value is returned as is.
updates[d] = fn(v, *values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs))
return values.update_regroup(self, updates, group)
def _update(self, var, fn, args, kwargs, group):
# TODO(josh11b): In eager mode, use one thread per device.
assert isinstance(var, values.DistributedVariable)
updates = {}
for d, v in var._index.items(): # pylint: disable=protected-access
name = "update_%d" % self._device_index.get(d)
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
# If args and kwargs are not mirrored, the value is returned as is.
updates[d] = fn(v,
*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs))
return values.update_regroup(self, updates, group)
def _update(self, var, fn, args, kwargs, group):
# TODO(josh11b): In eager mode, use one thread per device.
assert isinstance(var, values.DistributedVariable)
updates = []
for i, (d, v) in enumerate(zip(var.devices, var.values)):
name = "update_%d" % i
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
# If args and kwargs are not mirrored, the value is returned as is.
updates.append(fn(v,
*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs)))
return values.update_regroup(self, self._device_map, updates, group)
def _update(self, var, fn, args, kwargs, group):
assert isinstance(var, values.TPUMirroredVariable)
if values._enclosing_tpu_context() is not None: # pylint: disable=protected-access
if group:
return fn(var, *args, **kwargs)
else:
return [fn(var, *args, **kwargs)]
# Otherwise, we revert to MirroredStrategy behavior and update each variable
# directly.
updates = {}
for d, v in var._index.items(): # pylint: disable=protected-access
name = "update_%d" % self._device_index.get(d)
with ops.device(d), distribute_lib.UpdateContext(
d), ops.name_scope(name):
# If args and kwargs are not mirrored, the value is returned as is.
updates[d] = fn(v, *values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs))
return values.update_regroup(self, updates, group)
def _update(self, var, fn, args, kwargs, group):
assert isinstance(var, values.TPUMirroredVariable)
if values._enclosing_tpu_context() is not None: # pylint: disable=protected-access
if group:
return fn(var, *args, **kwargs)
else:
return (fn(var, *args, **kwargs),)
# Otherwise, we revert to MirroredStrategy behavior and update each variable
# directly.
updates = []
for i, (d, v) in enumerate(zip(var.devices, var.values)):
name = "update_%d" % i
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
# If args and kwargs are not mirrored, the value is returned as is.
updates.append(fn(v,
*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs)))
return values.update_regroup(self, self._device_map, updates, group)
def _update(self, var, fn, args, kwargs, group):
assert isinstance(var, values.TPUMirroredVariable)
if values._enclosing_tpu_context() is not None: # pylint: disable=protected-access
if group:
return fn(var, *args, **kwargs)
else:
return [fn(var, *args, **kwargs)]
# Otherwise, we revert to MirroredStrategy behavior and update each variable
# directly.
updates = {}
for d, v in var._index.items(): # pylint: disable=protected-access
name = "update_%d" % self._device_index.get(d)
with ops.device(d), distribute_lib.UpdateContext(d), ops.name_scope(name):
# If args and kwargs are not mirrored, the value is returned as is.
updates[d] = fn(v,
*values.select_device_mirrored(d, args),
**values.select_device_mirrored(d, kwargs))
return values.update_regroup(self, updates, group)
