def test_vertically_federated_raises_if_more_than_two_workers_are_provided():
sy.local_worker.clear_objects()
alice = sy.VirtualWorker(id="alice", hook=hook, is_client_worker=False)
bob = sy.VirtualWorker(id="bob", hook=hook, is_client_worker=False)
charlie = sy.VirtualWorker(id="charlie", hook=hook, is_client_worker=False)
inputs = th.tensor([1, 2, 3, 4.0])
targets = th.tensor([1, 2, 3, 4.0])
dataset = PartitionedDataset(inputs, targets)
with pytest.raises(AssertionError):
vertical_dataset = dataset.vertically_federate((alice, bob, charlie))
alice.remove_worker_from_local_worker_registry()
bob.remove_worker_from_local_worker_registry()
charlie.remove_worker_from_local_worker_registry()
def test_plan_built_on_method(hook):
"""
Test @sy.meth2plan and plan send / get / send
"""
hook.local_worker.is_client_worker = False
x11 = th.tensor([-1, 2.0]).tag("input_data")
x21 = th.tensor([-1, 2.0]).tag("input_data")
device_1 = sy.VirtualWorker(hook, id="device_1", data=(x11, ))
device_2 = sy.VirtualWorker(hook, id="device_2", data=(x21, ))
class Net(nn.Module):
def __init__(self):
super(Net, self).__init__()
self.fc1 = nn.Linear(2, 3)
self.fc2 = nn.Linear(3, 2)
@sy.method2plan
def forward(self, x):
x = F.relu(self.fc1(x))
x = self.fc2(x)
return F.log_softmax(x, dim=0)
net = Net()
# build
net.forward.build(th.tensor([1, 2.0]))
net.send(device_1)
pointer_to_data = device_1.search("input_data")[0]
pointer_to_result = net(pointer_to_data)
assert isinstance(pointer_to_result.get(), th.Tensor)
net.get()
net.send(device_2)
pointer_to_data = device_2.search("input_data")[0]
pointer_to_result = net(pointer_to_data)
assert isinstance(pointer_to_result.get(), th.Tensor)
hook.local_worker.is_client_worker = True
def run(constant_overwrites):
config_path = ROOT_DIR / 'hyperparams.yml'
constants = merge_dict(load_hyperparams(config_path), constant_overwrites)
use_cuda = constants['cuda'] and torch.cuda.is_available()
hook = sy.TorchHook(torch)
# The organisations that will participate in training
org1 = sy.VirtualWorker(hook, id="org1")
org2 = sy.VirtualWorker(hook, id="org2")
torch.manual_seed(constants['seed'])
device = torch.device('cuda' if use_cuda else 'cpu')
kwargs = {'num_workers': 1, 'pin_memory': True} if use_cuda else {}
batch_size = constants['batch_size']
test_batch_size = constants['test_batch_size']
transform = transforms.Compose(
[transforms.ToTensor(),
transforms.Normalize((0.1307, ), (0.3081, ))])
dataset = datasets.MNIST('../data',
train=True,
download=True,
transform=transform)
federated_train_loader = sy.FederatedDataLoader(dataset.federate(
(org1, org2)),
batch_size=batch_size,
shuffle=True,
**kwargs)
test_loader = torch.utils.data.DataLoader(dataset,
batch_size=test_batch_size,
shuffle=True,
**kwargs)
model = CNN().to(device)
optimizer = optim.SGD(model.parameters(), lr=constants['learning_rate'])
for epoch in range(1, constants['n_epochs'] + 1):
train(constants, model, device, federated_train_loader, optimizer,
epoch)
test(constants, model, device, test_loader)
if constants['save_model']:
torch.save(model.state_dict(), 'mnist_cnn.pt')
def _update_node_infos(self, node_id: str):
""" Create a new virtual worker to store/compute datasets owned by this peer.
Args:
node_id: ID used to identify this peer.
"""
worker = sy.VirtualWorker(sy.hook, id=node_id)
sy.local_worker._known_workers[node_id] = worker
sy.local_worker.is_client_worker = False
return worker
def test_encode_virtualWorker(self):
# Given
obj = sy.VirtualWorker()
expected = {"mode": "subscribe", "obj": {"__worker__": 0}}
# When
result = self.cut.encode(obj)
# Then
self.assertDictEqual(expected, result)
def test_serde_virtual_worker(hook):
virtual_worker = syft.VirtualWorker(hook=hook, id="deserialized_worker1")
# Populate worker
tensor1, tensor2 = torch.tensor([1.0, 2.0]), torch.tensor([0.0])
ptr1, ptr2 = tensor1.send(virtual_worker), tensor2.send(virtual_worker)
serialized_worker = serde.serialize(virtual_worker, force_full_simplification=False)
deserialized_worker = serde.deserialize(serialized_worker)
assert virtual_worker.id == deserialized_worker.id
def generate_workers(num_workers):
"""Generates a given number of PySyft's virtual workers"""
workers_list = []
# init workers
for i in range(num_workers):
worker = sy.VirtualWorker(hook, id=str(i))
workers_list.append(worker)
return workers_list
def get_fog_graph(hook, num_workers, num_clusters,
shuffle_workers=True, uniform_clusters=True, fog=True):
# Define workers and layers
workers = {}
agg_map = {}
layer = 0
for id_ in range(num_workers):
name = 'L{}_W{}'.format(layer, id_)
workers[name] = sy.VirtualWorker(hook, id=name)
layer = 1
if not fog:
# single layer model averaging fl
name = 'L1_W0'
workers[name] = sy.VirtualWorker(hook, id=name)
worker_ids = [_ for _ in workers.keys() if 'L0' in _]
agg_map[name] = worker_ids
return agg_map, workers
for num_cluster in num_clusters:
# multi layer aggregation fog learning
for id_ in range(num_cluster):
name = 'L{}_W{}'.format(layer, id_)
workers[name] = sy.VirtualWorker(hook, id=name)
layer += 1
for l in range(1, len(num_clusters)+1):
clustr_ids = [_ for _ in workers.keys() if 'L{}'.format(l) in _]
worker_ids = [_ for _ in workers.keys() if 'L{}'.format(l-1) in _]
if shuffle_workers:
worker_ids = list(np.array(worker_ids)[
np.random.permutation(len(worker_ids))])
cluster_sizes = get_cluster_sizes(len(worker_ids),
len(clustr_ids), uniform_clusters)
indices = [sum(cluster_sizes[:id_])
for id_ in range(len(cluster_sizes)+1)]
for id_ in range(len(clustr_ids)):
agg_map[clustr_ids[id_]] = worker_ids[indices[id_]: indices[id_+1]]
return agg_map, workers
def connect_to_crypto_provider():
""" Simulates the existence of an arbitor to facilitate
model generation & client-side utilisation
Returns:
Arbiter (i.e. TTP) (sy.VirtualWorker)
"""
return sy.VirtualWorker(
pt_hook,
id="crypto_provider"
).clear_objects()
def workers(hook):
alice = syft.VirtualWorker(id="alice", hook=hook, is_client_worker=False)
bob = syft.VirtualWorker(id="bob", hook=hook, is_client_worker=False)
james = syft.VirtualWorker(id="james", hook=hook, is_client_worker=False)
bob.add_workers([alice, james])
alice.add_workers([bob, james])
james.add_workers([bob, alice])
hook.local_worker.add_workers([alice, bob, james])
# TODO: should one set this boolean to true?
# It was done previously in self.setUp() from `test_hook.py`
# hook.local_worker.is_client_worker = True
output = {}
output["me"] = hook.local_worker
output["alice"] = alice
output["bob"] = bob
output["james"] = james
return output
def create_workers(self, workers_id_list):
logging.info("Creating workers...")
for worker_id in workers_id_list:
if worker_id not in self.workers:
logging.debug("Creating the worker: {}".format(worker_id))
self.workers[worker_id] = sy.VirtualWorker(self.hook,
id=worker_id)
else:
logging.debug(
"Worker {} exists. Skip creating this worker".format(
worker_id))
def test_spinup_time(hook):
"""Tests to ensure that virtual workers intialized with 10000 data points
load in under 1 seconds. This is needed to ensure that virtual workers
spun up inside web frameworks are created quickly enough to not cause timeout errors"""
data = []
for i in range(10000):
data.append(torch.Tensor(5, 5).random_(100))
start_time = time()
dummy = sy.VirtualWorker(hook, id="dummy", data=data)
end_time = time()
assert (end_time - start_time) < 1
def create_virtual_workers(num_workers=None, id_list=None):
if id_list is None:
if num_workers is not None:
id_list = [f'worker_{i}' for i in range(num_workers)]
if num_workers is not None and len(id_list) != num_workers:
logger.warning(
'Number of workers and id_list length not maching.'
' id_list will be taken and num_workers will be ignored.')
workers = [sy.VirtualWorker(hook, id=i) for i in id_list]
return workers, id_list
def test_pointer_tensor_simplify():
"""Test the simplification of PointerTensor"""
alice = syft.VirtualWorker(syft.torch.hook, id="alice")
input_tensor = PointerTensor(id=1000, location=alice, owner=alice)
output = serde._simplify(input_tensor)
assert output[1][0] == input_tensor.id
assert output[1][1] == input_tensor.id_at_location
assert output[1][2] == input_tensor.owner.id
def test_vertically_federate_raises_if_dataset_does_not_have_data_and_targets():
sy.local_worker.clear_objects()
alice = sy.VirtualWorker(id="alice", hook=hook, is_client_worker=False)
bob = sy.VirtualWorker(id="bob", hook=hook, is_client_worker=False)
inputs = th.tensor([1, 2, 3, 4.0])
targets = th.tensor([1, 2, 3, 4.0])
data_only_dataset = PartitionedDataset(data=inputs)
with pytest.raises(AssertionError):
vertical_dataset = data_only_dataset.vertically_federate((alice, bob))
targets_only_dataset = PartitionedDataset(targets=targets)
with pytest.raises(AssertionError):
vertical_dataset = targets_only_dataset.vertically_federate((alice, bob))
alice.remove_worker_from_local_worker_registry()
bob.remove_worker_from_local_worker_registry()
def init_workers(self, num_workers):
workers = []
for i in range(num_workers):
worker = {}
worker["instance"] = syft.VirtualWorker(hook, id=f"worker_{i}")
worker["model"] = None
worker["optim"] = None
worker["criterion"] = None
worker["loss"] = None
workers.append(worker)
return workers
def setUpModule():
print("setup module")
global me
global bob
global alice
global james
global hook
hook = sy.TorchHook(verbose=True)
me = hook.local_worker
me.is_client_worker = False
bob = sy.VirtualWorker(id="bob", hook=hook, is_client_worker=False)
alice = sy.VirtualWorker(id="alice", hook=hook, is_client_worker=False)
james = sy.VirtualWorker(id="james", hook=hook, is_client_worker=False)
bob.add_workers([alice, james])
alice.add_workers([bob, james])
james.add_workers([bob, alice])
def test_clear_object_for_worker_created_with_pre_existing_id(hook):
worker = sy.VirtualWorker(hook, id="worker")
worker.clear_objects()
ptr = th.tensor([1, 2, 3]).send(worker)
assert len(worker._known_workers[worker.id]._objects) == len(worker._objects)
assert len(worker._objects) == 1
# create worker with pre-existing id
worker = sy.VirtualWorker(hook, id="worker")
worker.clear_objects()
assert len(worker._known_workers[worker.id]._objects) == len(worker._objects)
assert len(worker._objects) == 0
ptr = th.tensor([1, 2, 3]).send(worker)
assert len(worker._known_workers[worker.id]._objects) == len(worker._objects)
assert len(worker._objects) == 1
def train_federated(trainset, num_workers=10, epochs=5, batch_size=64):
manager = sy.VirtualWorker(hook, id="manager")
workers = create_workers(num_workers)
worker_data = send_train_data_to_workers(workers, trainset, batch_size)
model = MNISTClassifier()
criterion = nn.NLLLoss()
for e in range(epochs):
models = [model.copy().send(worker) for worker in workers]
optimizers = [
optim.Adam(model.parameters(), lr=0.003) for model in models
]
mean_loss = 0
for i, worker in enumerate(worker_data):
model = models[i]
optimizer = optimizers[i]
# batches
for images, labels in worker:
optimizer.zero_grad()
log_ps = model(images.float())
loss = criterion(log_ps, labels)
loss.backward()
optimizer.step()
mean_loss += (loss.get().item() / len(worker_data))
for model in models:
model.move(manager)
with torch.no_grad():
fc_layers = ("fc1", "fc2", "fc3", "fc4")
for layer in fc_layers:
weights = torch.stack(
[getattr(m, layer).weight for m in models])
biases = torch.stack([getattr(m, layer).bias for m in models])
mean_weight = torch.mean(weights).get()
mean_bias = torch.mean(biases).get()
model_layer = getattr(model, layer)
model_layer.weight.set_(mean_weight)
model_layer.bias.set_(mean_bias)
model = model.get()
print("Epoch: {:0>2d}/{:0>2d} | ".format(e + 1, epochs),
"Mean training Loss: {:.3f} ".format(mean_loss))
def get_federated_dataset(data, users, context_size, hook):
users_data = []
workers = []
for user in users:
user_worker = sy.VirtualWorker(hook, id = user)
cur_data = data[data.user == user]
X, Y = extend_data(cur_data.X, cur_data.Y, context_size)
X = th.tensor(X)
Y = th.tensor(Y)
users_data.append(sy.BaseDataset(X, Y).send(user_worker))
workers.append(user_worker)
return sy.FederatedDataset(users_data), workers
def setUp(self):
hook = sy.TorchHook(torch, verbose=True)
self.me = hook.local_worker
self.me.is_client_worker = True
instance_id = str(int(10e10 * random.random()))
bob = sy.VirtualWorker(id=f"bob{instance_id}", hook=hook, is_client_worker=False)
alice = sy.VirtualWorker(id=f"alice{instance_id}", hook=hook, is_client_worker=False)
james = sy.VirtualWorker(id=f"james{instance_id}", hook=hook, is_client_worker=False)
bob.add_workers([alice, james])
alice.add_workers([bob, james])
james.add_workers([bob, alice])
self.hook = hook
self.bob = bob
self.alice = alice
self.james = james
# A Toy Dataset
data = torch.tensor([[0, 0], [0, 1], [1, 0], [1, 1.0]], requires_grad=True)
target = torch.tensor([[0], [0], [1], [1.0]], requires_grad=True)
# get pointers to training data on each worker by
# sending some training data to bob and alice
data_bob = data[0:2]
target_bob = target[0:2]
data_alice = data[2:]
target_alice = target[2:]
data_bob = data_bob.send(bob)
data_alice = data_alice.send(alice)
target_bob = target_bob.send(bob)
target_alice = target_alice.send(alice)
# organize pointers into a list
self.datasets = [(data_bob, target_bob), (data_alice, target_alice)]
def test_generic_federated_learning():
"""
"""
hook = sy.TorchHook(torch)
bob = sy.VirtualWorker(hook, id="bob")
alice = sy.VirtualWorker(hook, id="alice")
data = torch.tensor([[0, 0], [0, 1], [1, 0], [1, 1.]], requires_grad=True)
target = torch.tensor([[0], [0], [1], [1.]], requires_grad=True)
data_bob = data[0:2]
target_bob = target[0:2]
data_alice = data[2:]
target_alice = target[2:]
model = nn.Linear(2, 1)
opt = optim.SGD(params=model.parameters(), lr=0.1)
data_bob = data_bob.send(bob)
data_alice = data_alice.send(alice)
target_bob = target_bob.send(bob)
target_alice = target_alice.send(alice)
datasets = [(data_bob, target_bob), (data_alice, target_alice)]
def train():
opt = optim.SGD(params=model.parameters(), lr=0.1)
for _ in range(2):
for data, target in datasets:
model.send(data.location)
opt.zero_grad()
pred = model(data)
loss = ((pred - target)**2).sum()
loss.backward()
opt.step()
model.get()
train()
def test_plan_built_on_method(hook):
"""
Test @sy.meth2plan and plan send / get / send
"""
x11 = torch.tensor([-1, 2.0]).tag("input_data")
x12 = torch.tensor([1, -2.0]).tag("input_data2")
x21 = torch.tensor([-1, 2.0]).tag("input_data")
x22 = torch.tensor([1, -2.0]).tag("input_data2")
device_1 = sy.VirtualWorker(hook, id="device_1", data=(x11, x12))
device_2 = sy.VirtualWorker(hook, id="device_2", data=(x21, x22))
class Net(nn.Module):
def __init__(self):
super(Net, self).__init__()
self.fc1 = nn.Linear(2, 3)
self.fc2 = nn.Linear(3, 2)
@sy.method2plan
def forward(self, x):
x = F.relu(self.fc1(x))
x = self.fc2(x)
return F.log_softmax(x, dim=0)
net = Net()
net.send(device_1)
net.forward.send(device_1)
pointer_to_data = device_1.search("input_data")[0]
pointer_to_result = net(pointer_to_data)
pointer_to_result.get()
net.get()
net.forward.get()
net.send(device_2)
net.forward.send(device_2)
pointer_to_data = device_2.search("input_data")[0]
pointer_to_result = net(pointer_to_data)
pointer_to_result.get()
def get_dataloaders(file,
logs,
tr_data_dstr,
test_data_distr,
num_workers=4,
train_batch_size=16,
test_batch_size=16,
size_split=None):
dataset = pd.read_csv(file, low_memory=False, squeeze=True)
# Create Virtual Workers
hook = sy.TorchHook(torch)
workers = []
for idx in range(num_workers):
workers.append(sy.VirtualWorker(hook, id="worker" + str(idx)))
# Set aside the test dataset, which will be the same for all the workers
train_data, test_data = _train_validation_split(dataset, 10)
# If by_attack - ignore the number of workers
if tr_data_dstr == "by_attack" or test_data_distr == "by_attack":
num_workers = 4
distr = data_distribution.Distribute(num_workers)
train_data_subsets, train_distribution = distr.perform_split(
tr_data_dstr, train_data, size=size_split)
test_data_subsets, test_distribution = distr.perform_split(
test_data_distr, test_data)
logs.plot_distribution(train_distribution, "train_distribution")
logs.plot_distribution(test_distribution, "test_distribution")
logs.save_loaders(train_data_subsets, test_data_subsets)
# Remember how many samples each worker have (needed for FedAvrg)
worker_sizes = []
for value in train_data_subsets.values():
worker_sizes.append(len(value))
assert len(worker_sizes) == len(workers)
fed_dataset_train = _distribute_among_workers(train_data_subsets, workers)
fed_dataset_test = _distribute_among_workers(test_data_subsets, workers)
fed_loader_train = sy.FederatedDataLoader(fed_dataset_train,
batch_size=train_batch_size,
shuffle=True)
fed_loader_test = sy.FederatedDataLoader(fed_dataset_test,
batch_size=test_batch_size,
shuffle=True)
return fed_loader_train, fed_loader_test, workers, worker_sizes
def test_send_frozen():
hook = syft.TorchHook(torch)
worker = syft.VirtualWorker(hook, id="worker")
d_in, h, d_out = 1000, 100, 10
model = torch.nn.Sequential(torch.nn.Linear(d_in, h), torch.nn.ReLU(),
torch.nn.Linear(h, d_out))
for param in model.parameters():
param.requires_grad = False
model.send(worker)
def serialize_model_params(params):
"""Serializes list of tensors into State/protobuf."""
model_params_state = State(state_placeholders=[
PlaceHolder().instantiate(param) for param in params
])
# make fake local worker for serialization
worker = sy.VirtualWorker(hook=None)
pb = protobuf.serde._bufferize(worker, model_params_state)
serialized_state = pb.SerializeToString()
return serialized_state
def test_that_vertical_dataset_can_return_datsets():
sy.local_worker.clear_objects()
alice = sy.VirtualWorker(id="alice", hook=hook, is_client_worker=False)
bob = sy.VirtualWorker(id="bob", hook=hook, is_client_worker=False)
inputs = th.tensor([1, 2, 3, 4.0])
targets = th.tensor([1, 2, 3, 4.0])
datset = PartitionedDataset(data=inputs, targets=targets)
vertical_dataset = datset.vertically_federate((alice, bob))
assert vertical_dataset.workers == ["alice", "bob"]
# Collect alice's dataset
alice_dataset = vertical_dataset.get_dataset("alice")
# VerticalDataset should only have bob now
assert vertical_dataset.workers == ["bob"]
alice.remove_worker_from_local_worker_registry()
bob.remove_worker_from_local_worker_registry()
def test_keras_activations_fn():
hook = syft.TensorFlowHook(tf)
bob = syft.VirtualWorker(hook, id="bob")
x_to_give = tf.constant([-2.0, 3.0, 5.0])
expected = tf.keras.activations.relu(x_to_give)
x_ptr = x_to_give.send(bob)
relu_ptr = tf.keras.activations.relu(x_ptr)
actual = relu_ptr.get()
assert tf.math.equal(actual, expected).numpy().all()
def force_detail(worker: AbstractWorker, worker_tuple: tuple) -> tuple:
worker_id, _objects, auto_add = worker_tuple
worker_id = sy.serde.msgpack.serde._detail(worker, worker_id)
result = sy.VirtualWorker(sy.hook, worker_id, auto_add=auto_add)
_objects = sy.serde.msgpack.serde._detail(worker, _objects)
result._objects = _objects
# make sure they weren't accidentally double registered
for _, obj in _objects.items():
if obj.id in worker._objects:
del worker._objects[obj.id]
return result
def connect_to_workers(n_workers):
""" Simulates the existence of N workers
Args:
n_workers (int): No. of virtual workers to simulate
Returns:
N virtual workers (list(sy.VirtualWorker))
"""
return [
sy.VirtualWorker(
pt_hook, id=f"worker{i+1}"
).clear_objects(
) for i in range(n_workers)
]
