def _test_zero_empty_partition(args):
hidden_dim = 1
model = SimpleModel(hidden_dim)
# Ensure model has 2 parameters, to cause empty partition with DP=3
assert len(list(model.parameters())) == 2
model, _, _, _ = deepspeed.initialize(args=args,
model=model,
model_parameters=model.parameters())
model.step()
def _test_adam_fp16_zero_onecycle_compatibility(args, zero_stage,
hidden_dim):
model = SimpleModel(hidden_dim)
model, _, _, _ = deepspeed.initialize(
args=args, model=model, model_parameters=model.parameters())
data_loader = random_dataloader(model=model,
total_samples=50,
hidden_dim=hidden_dim,
device=model.device)
for n, batch in enumerate(data_loader):
loss = model(batch[0], batch[1])
model.backward(loss)
model.step()
def _go(args):
model = SimpleModel(hidden_dim)
model, _, _, _ = deepspeed.initialize(
args=args, model=model, model_parameters=model.parameters())
data_loader = random_dataloader(model=model,
total_samples=10,
hidden_dim=hidden_dim,
device=model.device)
for _, batch in enumerate(data_loader):
loss = model(batch[0], batch[1])
model.backward(loss)
model.step()
def _test_zero_empty_partition(args):
hidden_dim = 1
model = SimpleModel(hidden_dim)
# Ensure model has 2 parameters, to cause empty partition with DP=3
assert len(list(model.parameters())) == 2
model, _, _, _ = deepspeed.initialize(
args=args, model=model, model_parameters=model.parameters())
# Now make sure things work..
data_loader = random_dataloader(model=model,
total_samples=1,
hidden_dim=hidden_dim,
device=model.device)
for n, batch in enumerate(data_loader):
loss = model(batch[0], batch[1])
model.backward(loss)
model.step()
def _test_zero_static_scale(args):
hidden_dim = 10
model = SimpleModel(hidden_dim)
model, optim, _, _ = deepspeed.initialize(
args=args, model=model, model_parameters=model.parameters())
# Ensure the static scaler is configured.
assert optim.dynamic_loss_scale == False
assert optim.loss_scaler.loss_scale == 138.
# Now make sure things work..
data_loader = random_dataloader(model=model,
total_samples=10,
hidden_dim=hidden_dim,
device=model.device)
for n, batch in enumerate(data_loader):
loss = model(batch[0], batch[1])
model.backward(loss)
model.step()
def _helper():
parser = argparse.ArgumentParser()
args = parser.parse_args(args='')
args.deepscale_config = config_path
args.local_rank = 0
hidden_dim = 10
model = SimpleModel(hidden_dim=hidden_dim)
model, _, _, _ = deepspeed.initialize(args=args, model=model)
data_loader = random_dataloader(model=model,
total_samples=5,
hidden_dim=hidden_dim,
device=model.device)
for n, batch in enumerate(data_loader):
loss = model(batch[0], batch[1])
with pytest.raises(AssertionError):
model.backward(loss)
with pytest.raises(AssertionError):
model.step()