def bmuf_process(filestore_dir, process_id, shared_results, nesterov=False):
# We need to import caffe2 in every process to initialize CUDA independently.
from caffe2.python import core, cnn, data_parallel_model, workspace, dyndep
from caffe2.proto import caffe2_pb2
dyndep.InitOpsLibrary("@/caffe2/caffe2/distributed:file_store_handler_ops")
if not workspace.has_gpu_support:
log.info('No GPU support test is Ignored.')
return
if workspace.NumCudaDevices() < 4:
log.info('Not enough GPU support, test IGNORED')
return
model = cnn.CNNModelHelper(order="NHWC", name="test")
gpu_ids = [0, 1] if process_id == 0 else [2, 3]
def _model_build_fun(model, loss_scale):
fc = model.FC("data", "fc", 16, 1, ("ConstantFill", {}),
("ConstantFill", {}))
fc_fl = model.FlattenToVec(fc, "fc_fl")
sigm = model.Sigmoid(fc_fl, "sigm")
sq = model.SquaredL2Distance([sigm, "label"], "sq")
loss = model.AveragedLoss(sq, "loss")
loss = model.Scale(loss, scale=loss_scale)
# For testing explicit sync
model.param_init_net.UniformFill([], ["sync_num"], shape=[1])
return [loss]
def _input_builder_fun(model):
return None
def _param_update_fun(model):
ITER = model.Iter("ITER")
LR = model.net.LearningRate(
[ITER],
"LR",
base_lr=(-0.1),
policy="fixed",
)
ONE = model.param_init_net.ConstantFill(
[],
"ONE",
shape=[1],
value=1.0,
)
for param in model.GetParams():
grad = model.param_to_grad[param]
model.WeightedSum([param, ONE, grad, LR], param)
def _generate_data(gpu_devices, process_id):
np.random.seed(26 + process_id * 10)
# Each run has same input, independent of number of gpus
batch_size = 64
for _ in range(0, 10):
full_data = np.random.rand(batch_size, 16)
full_labels = np.round(full_data[:, 0])
batch_per_device = batch_size // len(gpu_devices)
for (j, g) in enumerate(gpu_devices):
st = j * batch_per_device
en = st + batch_per_device
data = full_data[st:en, :].astype(np.float32)
labels = full_labels[st:en].astype(np.float32)
with core.DeviceScope(core.DeviceOption(caffe2_pb2.CUDA, g)):
workspace.FeedBlob("gpu_{}/data".format(g), data)
workspace.FeedBlob("gpu_{}/label".format(g), labels)
_generate_data(gpu_ids, process_id)
workspace.RunOperatorOnce(
core.CreateOperator("FileStoreHandlerCreate", [], ["store_handler"],
path=filestore_dir))
rendezvous = dict(kv_handler="store_handler",
shard_id=process_id,
num_shards=2,
engine="GLOO",
exit_nets=None)
data_parallel_model.Parallelize_GPU_BMUF(
model,
_input_builder_fun,
_model_build_fun,
_param_update_fun,
devices=gpu_ids,
rendezvous=rendezvous,
nesterov=nesterov,
add_blobs_to_sync=["sync_num"],
)
data_parallel_model.RunInitNet(model)
def _gpu_pid(gpu_id, pid):
if pid == 1:
return gpu_id + 2
return gpu_id
np.testing.assert_equal(
workspace.FetchBlob("gpu_{}/fc_w_v".format(_gpu_pid(0, process_id))),
np.zeros(16).astype(np.float32).reshape(1, 16))
# Run the algorithm for one iteration to have non-zero params.
data_parallel_model.RunNet(model, 1)
# Save iteration momentum and post local update params
results = {}
v_b_ = workspace.FetchBlob("gpu_{}/fc_b_v".format(_gpu_pid(0, process_id)))
v_w_ = workspace.FetchBlob("gpu_{}/fc_w_v".format(_gpu_pid(0, process_id)))
results['v_b_'] = v_b_
results['v_w_'] = v_w_
workspace.RunNetOnce(model.net)
b_0_ = workspace.FetchBlob("gpu_{}/fc_b".format(_gpu_pid(0, process_id)))
w_0_ = workspace.FetchBlob("gpu_{}/fc_w".format(_gpu_pid(0, process_id)))
b_1_ = workspace.FetchBlob("gpu_{}/fc_b".format(_gpu_pid(1, process_id)))
w_1_ = workspace.FetchBlob("gpu_{}/fc_w".format(_gpu_pid(1, process_id)))
results['b_0_'] = b_0_
results['w_0_'] = w_0_
results['b_1_'] = b_1_
results['w_1_'] = w_1_
# Test sync
if process_id == 0:
workspace.FeedBlob(model._device_prefix + "_0/sync_num",
np.array([2603]).astype(np.float32),
device_option=core.DeviceOption(
model._device_type, 0))
# Compute block gradients.
b_g_ = workspace.FetchBlob("gpu_{}/fc_b_g".format(_gpu_pid(0, process_id)))
w_g_ = workspace.FetchBlob("gpu_{}/fc_w_g".format(_gpu_pid(0, process_id)))
results['b_g_'] = b_g_
results['w_g_'] = w_g_
workspace.RunNetOnce(model._global_model_param_updates_net)
# g_b = (b_0_ + b_1_) / 2 - b_g_
# g_w = (w_0_ + w_1_) / 2 - w_g_
v_b = workspace.FetchBlob("gpu_{}/fc_b_v".format(_gpu_pid(0, process_id)))
v_w = workspace.FetchBlob("gpu_{}/fc_w_v".format(_gpu_pid(0, process_id)))
w_g = workspace.FetchBlob("gpu_{}/fc_w_g".format(_gpu_pid(0, process_id)))
b_g = workspace.FetchBlob("gpu_{}/fc_b_g".format(_gpu_pid(0, process_id)))
w_0 = workspace.FetchBlob("gpu_{}/fc_w".format(_gpu_pid(0, process_id)))
b_0 = workspace.FetchBlob("gpu_{}/fc_b".format(_gpu_pid(0, process_id)))
w_1 = workspace.FetchBlob("gpu_{}/fc_w".format(_gpu_pid(1, process_id)))
b_1 = workspace.FetchBlob("gpu_{}/fc_b".format(_gpu_pid(1, process_id)))
results['v_b'] = v_b
results['v_w'] = v_w
results['w_g'] = w_g
results['b_g'] = b_g
results['w_0'] = w_0
results['b_0'] = b_0
results['w_1'] = w_1
results['b_1'] = b_1
# Test add_blobs_to_sync
for j in model._devices:
sync = workspace.FetchBlob(model._device_prefix +
"_{}/sync_num".format(j))[0]
results['sync_{}'.format(j)] = sync
shared_results[process_id] = results
def test_parallelize_gpu_bmuf(self):
model = cnn.CNNModelHelper(
order="NHWC",
name="test"
)
gpu_ids = [0, 1]
def input_builder_fun(model):
return None
self._generate_data(gpu_ids)
data_parallel_model.Parallelize_GPU_BMUF(
model,
input_builder_fun,
self._model_build_fun,
self._param_update_fun,
devices=gpu_ids,
)
data_parallel_model.RunInitNet(model)
# Check initial momentum params are zeros
self.assertEqual(
list(viewkeys(model._device_grouped_blobs)), ['fc_w', 'fc_b']
)
self.assertEqual(workspace.FetchBlob('gpu_0/fc_b_v'), 0)
np.testing.assert_equal(
workspace.FetchBlob('gpu_0/fc_w_v'),
np.zeros(16).astype(np.float32).reshape(1, 16)
)
# Run the algorithm for one iteration to have non-zero params.
data_parallel_model.RunNet(model, 1)
# Save iteration momentum and post local update params
v_b_ = workspace.FetchBlob('gpu_0/fc_b_v')
v_w_ = workspace.FetchBlob('gpu_0/fc_w_v')
workspace.RunNetOnce(model.net)
b_0_ = workspace.FetchBlob('gpu_0/fc_b')
w_0_ = workspace.FetchBlob('gpu_0/fc_w')
b_1_ = workspace.FetchBlob('gpu_1/fc_b')
w_1_ = workspace.FetchBlob('gpu_1/fc_w')
# Compute block gradients.
b_g_ = workspace.FetchBlob('gpu_0/fc_b_g')
w_g_ = workspace.FetchBlob('gpu_0/fc_w_g')
workspace.RunNetOnce(model._global_model_param_updates_net)
g_b = (b_0_ + b_1_) / 2 - b_g_
g_w = (w_0_ + w_1_) / 2 - w_g_
v_b = workspace.FetchBlob('gpu_0/fc_b_v')
v_w = workspace.FetchBlob('gpu_0/fc_w_v')
w_g = workspace.FetchBlob('gpu_0/fc_w_g')
b_g = workspace.FetchBlob('gpu_0/fc_b_g')
w_0 = workspace.FetchBlob('gpu_0/fc_w')
b_0 = workspace.FetchBlob('gpu_0/fc_b')
w_1 = workspace.FetchBlob('gpu_1/fc_w')
b_1 = workspace.FetchBlob('gpu_1/fc_b')
# Check momentum update step
np.testing.assert_equal(v_b, 0.5 * v_b_ + g_b)
np.testing.assert_equal(v_w, 0.5 * v_w_ + g_w)
np.testing.assert_equal(w_g, w_0)
np.testing.assert_equal(w_g, w_1)
np.testing.assert_equal(b_g, b_0)
np.testing.assert_equal(b_g, b_1)
# Check params update step
np.testing.assert_equal(w_0, w_g_ + v_w)
np.testing.assert_equal(b_0, b_g_ + v_b)
