def onnx_to_singa(niter, use_cpu=False):
if use_cpu:
print("Using CPU")
dev = device.get_default_device()
else:
print("Using GPU")
dev = device.create_cuda_gpu()
model = sonnx.load("mlp.onnx")
backend = sonnx.prepare(model, device=dev)
sgd = opt.SGD(0.1)
inputs = Tensor(
data=data,
device=dev,
requires_grad=False,
stores_grad=False,
name="input",
)
target = Tensor(
data=label,
device=dev,
requires_grad=False,
stores_grad=False,
name="target",
)
for i in range(100):
y = backend.run([inputs])[0]
loss = autograd.softmax_cross_entropy(y, target)
for p, gp in autograd.backward(loss):
sgd.update(p, gp)
loss_rate = tensor.to_numpy(loss)[0]
accuracy_rate = accuracy(tensor.to_numpy(y), label)
print("Iter {}, accurate={}, loss={}".format(i, accuracy_rate, loss_rate))
def serve(agent, use_cpu, parameter_file, topk=5):
if use_cpu:
print('running with cpu')
dev = device.get_default_device()
layer.engine = 'singacpp'
else:
print("runing with gpu")
dev = device.create_cuda_gpu()
print('Start intialization............')
net = create_net((3, 224, 224), parameter_file)
net.to_device(dev)
print('End intialization............')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t ')
while True:
key, val = agent.pull()
if key is None:
time.sleep(0.1)
continue
msg_type = MsgType.parse(key)
if msg_type.is_request():
try:
response = ""
img = imread(val['image'], mode='RGB').astype(np.float32)
height,width = img.shape[:2]
img[:, :, 0] -= 123.68
img[:, :, 1] -= 116.779
img[:, :, 2] -= 103.939
img[:,:,[0,1,2]] = img[:,:,[2,1,0]]
img = img.transpose((2, 0, 1))
img = img[:, (height-224)//2:(height+224)//2,\
(width-224)//2:(width+224)//2]
images = np.expand_dims(img, axis=0)
x = tensor.from_numpy(images.astype(np.float32))
x.to_device(dev)
y = net.predict(x)
prob = np.average(tensor.to_numpy(y), 0)
# sort and reverse
idx = np.argsort(-prob)[0:topk]
for i in idx:
response += "%s:%s<br/>" % (labels[i], prob[i])
except Exception:
traceback.print_exc()
response = "Sorry, system error during prediction."
except SystemExit:
traceback.print_exc()
response = "Sorry, error triggered sys.exit() during prediction."
agent.push(MsgType.kResponse, response)
elif MsgType.kCommandStop.equal(msg_type):
print('get stop command')
agent.push(MsgType.kStatus, "success")
break
else:
print('get unsupported message %s' % str(msg_type))
agent.push(MsgType.kStatus, "Unknown command")
break
# while loop
print("server stop")
def train(data,
net,
max_epoch,
get_lr,
weight_decay,
batch_size=100,
use_cpu=False):
print('Start intialization............')
if use_cpu:
print('Using CPU')
dev = device.get_default_device()
else:
print('Using GPU')
dev = device.create_cuda_gpu()
net.to_device(dev)
opt = optimizer.SGD(momentum=0.9, weight_decay=weight_decay)
for (p, specs) in zip(net.param_names(), net.param_specs()):
opt.register(p, specs)
tx = tensor.Tensor((batch_size, 3, 32, 32), dev)
ty = tensor.Tensor((batch_size, ), dev, core_pb2.kInt)
train_x, train_y, test_x, test_y = data
num_train_batch = train_x.shape[0] // batch_size
num_test_batch = test_x.shape[0] // batch_size
idx = np.arange(train_x.shape[0], dtype=np.int32)
for epoch in range(max_epoch):
np.random.shuffle(idx)
loss, acc = 0.0, 0.0
print('Epoch %d' % epoch)
for b in range(num_train_batch):
x = train_x[idx[b * batch_size:(b + 1) * batch_size]]
y = train_y[idx[b * batch_size:(b + 1) * batch_size]]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
grads, (l, a) = net.train(tx, ty)
loss += l
acc += a
for (s, p, g) in zip(net.param_names(), net.param_values(), grads):
opt.apply_with_lr(epoch, get_lr(epoch), g, p, str(s), b)
# update progress bar
utils.update_progress(b * 1.0 / num_train_batch,
'training loss = %f, accuracy = %f' % (l, a))
info = '\ntraining loss = %f, training accuracy = %f, lr = %f' \
% ((loss / num_train_batch), (acc / num_train_batch), get_lr(epoch))
print(info)
loss, acc = 0.0, 0.0
for b in range(num_test_batch):
x = test_x[b * batch_size:(b + 1) * batch_size]
y = test_y[b * batch_size:(b + 1) * batch_size]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
l, a = net.evaluate(tx, ty)
loss += l
acc += a
print('test loss = %f, test accuracy = %f' % ((loss / num_test_batch),
(acc / num_test_batch)))
net.save('model', 20) # save model params into checkpoint file
def transfer_learning(sg_ir,
x,
y,
epochs=1,
batch_size=64,
dev=device.get_default_device()):
batch_number = x.shape[0] // batch_size
trans_model = Trans(sg_ir, -1)
for i in range(epochs):
for b in range(batch_number):
l_idx = b * batch_size
r_idx = (b + 1) * batch_size
x_batch = tensor.Tensor(device=dev, data=x[l_idx:r_idx])
target_batch = tensor.Tensor(device=dev, data=y[l_idx:r_idx])
output_batch = trans_model.forward(x_batch)
loss = autograd.softmax_cross_entropy(output_batch, target_batch)
accuracy_rate = accuracy(tensor.to_numpy(output_batch),
tensor.to_numpy(target_batch))
sgd = opt.SGD(lr=0.07)
for p, gp in autograd.backward(loss):
sgd.update(p, gp)
sgd.step()
if b % 1e2 == 0:
print("acc %6.2f loss, %6.2f" %
(accuracy_rate, tensor.to_numpy(loss)[0]))
print("transfer-learning completed")
return trans_model
def train(model,
x,
y,
epochs=1,
batch_size=64,
dev=device.get_default_device()):
batch_number = x.shape[0] // batch_size
for i in range(epochs):
for b in range(batch_number):
l_idx = b * batch_size
r_idx = (b + 1) * batch_size
x_batch = tensor.Tensor(device=dev, data=x[l_idx:r_idx])
target_batch = tensor.Tensor(device=dev, data=y[l_idx:r_idx])
output_batch = model.forward(x_batch)
# onnx_model = sonnx.to_onnx([x_batch], [y])
# print('The model is:\n{}'.format(onnx_model))
loss = autograd.softmax_cross_entropy(output_batch, target_batch)
accuracy_rate = accuracy(tensor.to_numpy(output_batch),
tensor.to_numpy(target_batch))
sgd = opt.SGD(lr=0.001)
for p, gp in autograd.backward(loss):
sgd.update(p, gp)
sgd.step()
if b % 1e2 == 0:
print("acc %6.2f loss, %6.2f" %
(accuracy_rate, tensor.to_numpy(loss)[0]))
print("training completed")
return x_batch, output_batch
def serve(agent, use_cpu, parameter_file, topk=5):
if use_cpu:
print('running with cpu')
dev = device.get_default_device()
layer.engine = 'singacpp'
else:
print("runing with gpu")
dev = device.create_cuda_gpu()
agent = agent
print('Start intialization............')
net = create_net((3, 224, 224), parameter_file)
net.to_device(dev)
print('End intialization............')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t ')
while True:
key, val = agent.pull()
if key is None:
time.sleep(0.1)
continue
msg_type = MsgType.parse(key)
if msg_type.is_request():
try:
response = ""
img = imread(val['image'], mode='RGB').astype(np.float32)
height,width = img.shape[:2]
img[:, :, 0] -= 123.68
img[:, :, 1] -= 116.779
img[:, :, 2] -= 103.939
img[:,:,[0,1,2]] = img[:,:,[2,1,0]]
img = img.transpose((2, 0, 1))
img = img[:, (height-224)//2:(height+224)//2,\
(width-224)//2:(width+224)//2]
images = np.expand_dims(img, axis=0)
x = tensor.from_numpy(images.astype(np.float32))
x.to_device(dev)
y = net.predict(x)
prob = np.average(tensor.to_numpy(y), 0)
# sort and reverse
idx = np.argsort(-prob)[0:topk]
for i in idx:
response += "%s:%s<br/>" % (labels[i], prob[i])
except:
traceback.print_exc()
response = "Sorry, system error during prediction."
agent.push(MsgType.kResponse, response)
elif MsgType.kCommandStop.equal(msg_type):
print('get stop command')
agent.push(MsgType.kStatus, "success")
break
else:
print('get unsupported message %s' % str(msg_type))
agent.push(MsgType.kStatus, "Unknown command")
break
# while loop
print("server stop")
def __init__(self, length=20, **knobs):
super().__init__(**knobs)
# onnx model url
self.model_url = 'https://github.com/onnx/models/raw/master/text/machine_comprehension/gpt-2/model/gpt2-lm-head-10.tar.gz'
# model path in the downloaded tar file
self.model_path = 'GPT-2-LM-HEAD/model.onnx'
self.dev = device.get_default_device()
self.length = length
self.tokenizer = GPT2Tokenizer.from_pretrained('gpt2')
def train(data, net, max_epoch, get_lr, weight_decay, batch_size=100,
use_cpu=False):
print('Start intialization............')
if use_cpu:
print('Using CPU')
dev = device.get_default_device()
else:
print('Using GPU')
dev = device.create_cuda_gpu()
net.to_device(dev)
opt = optimizer.SGD(momentum=0.9, weight_decay=weight_decay)
for (p, specs) in zip(net.param_names(), net.param_specs()):
opt.register(p, specs)
tx = tensor.Tensor((batch_size, 3, 32, 32), dev)
ty = tensor.Tensor((batch_size,), dev, tensor.int32)
train_x, train_y, test_x, test_y = data
num_train_batch = train_x.shape[0] // batch_size
num_test_batch = test_x.shape[0] // batch_size
idx = np.arange(train_x.shape[0], dtype=np.int32)
for epoch in range(max_epoch):
np.random.shuffle(idx)
loss, acc = 0.0, 0.0
print('Epoch %d' % epoch)
for b in range(num_train_batch):
x = train_x[idx[b * batch_size: (b + 1) * batch_size]]
y = train_y[idx[b * batch_size: (b + 1) * batch_size]]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
grads, (l, a) = net.train(tx, ty)
loss += l
acc += a
for (s, p, g) in zip(net.param_names(), net.param_values(), grads):
opt.apply_with_lr(epoch, get_lr(epoch), g, p, str(s), b)
# update progress bar
utils.update_progress(b * 1.0 / num_train_batch,
'training loss = %f, accuracy = %f' % (l, a))
info = '\ntraining loss = %f, training accuracy = %f, lr = %f' \
% ((loss / num_train_batch), (acc / num_train_batch), get_lr(epoch))
print(info)
loss, acc = 0.0, 0.0
for b in range(num_test_batch):
x = test_x[b * batch_size: (b + 1) * batch_size]
y = test_y[b * batch_size: (b + 1) * batch_size]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
l, a = net.evaluate(tx, ty)
loss += l
acc += a
print('test loss = %f, test accuracy = %f' %
((loss / num_test_batch), (acc / num_test_batch)))
net.save('model', 20) # save model params into checkpoint file
def main():
try:
# Setup argument parser
parser = ArgumentParser(description="VGG inference")
parser.add_argument("--port", default=9999, help="listen port")
parser.add_argument("--use_cpu",
action="store_true",
help="If set, load models onto CPU devices")
parser.add_argument("--parameter_file", default="")
parser.add_argument("--depth",
type=int,
choices=[11, 13, 16, 19],
default='11')
parser.add_argument("--batchnorm",
action='store_true',
help='use batchnorm or not')
# Process arguments
args = parser.parse_args()
port = args.port
# start to train
agent = Agent(port)
net = model.create_net(args.depth, 1000, args.batchnorm, args.use_cpu)
if args.use_cpu:
print('Using CPU')
dev = device.get_default_device()
else:
print('Using GPU')
dev = device.create_cuda_gpu()
net.to_device(dev)
model.init_params(net, args.parameter_file)
print('Finish loading models')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t ')
serve(net, labels, dev, agent)
# acc = evaluate(net, '../val_list.txt', 'image/val', dev)
# print acc
# wait the agent finish handling http request
agent.stop()
except SystemExit:
return
except:
traceback.print_exc()
sys.stderr.write(" for help use --help \n\n")
return 2
def main():
try:
# Setup argument parser
parser = ArgumentParser(description="Wide residual network")
parser.add_argument("--port", default=9999, help="listen port")
parser.add_argument("--use_cpu",
action="store_true",
help="If set, load models onto CPU devices")
parser.add_argument("--parameter_file", default="wrn-50-2.pickle")
parser.add_argument("--model",
choices=['resnet', 'wrn', 'preact', 'addbn'],
default='wrn')
parser.add_argument("--depth",
type=int,
choices=[18, 34, 50, 101, 152, 200],
default='50')
# Process arguments
args = parser.parse_args()
port = args.port
# start to train
agent = Agent(port)
net = model.create_net(args.model, args.depth, args.use_cpu)
if args.use_cpu:
print('Using CPU')
dev = device.get_default_device()
else:
print('Using GPU')
dev = device.create_cuda_gpu()
net.to_device(dev)
model.init_params(net, args.parameter_file)
print('Finish loading models')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t ')
serve(net, labels, dev, agent)
# acc = evaluate(net, '../val_list.txt', 'image/val', dev)
# print acc
# wait the agent finish handling http request
agent.stop()
except SystemExit:
return
except:
traceback.print_exc()
sys.stderr.write(" for help use --help \n\n")
return 2
def main():
'''Command line options'''
try:
# Setup argument parser
parser = ArgumentParser(description="Train CNN Readmission Model")
parser.add_argument('-inputfolder', type=str, help='inputfolder')
parser.add_argument('-outputfolder', type=str, help='outputfolder')
parser.add_argument('-visfolder', type=str, help='visfolder')
parser.add_argument('-trainratio',
type=float,
help='ratio of train samples')
parser.add_argument('-validationratio',
type=float,
help='ratio of validation samples')
parser.add_argument('-testratio',
type=float,
help='ratio of test samples')
parser.add_argument('-p',
'--port',
default=9989,
help='listening port')
parser.add_argument('-C', '--use_cpu', action="store_true")
parser.add_argument('--max_epoch', default=100)
# Process arguments
args = parser.parse_args()
port = args.port
use_cpu = args.use_cpu
if use_cpu:
print("runing with cpu")
dev = device.get_default_device()
else:
print("runing with gpu")
dev = device.create_cuda_gpu()
# start to train
agent = Agent(port)
train(args.inputfolder, args.outputfolder, args.visfolder,
args.trainratio, args.validationratio, args.testratio, dev,
agent, args.max_epoch, use_cpu)
# wait the agent finish handling http request
agent.stop()
except SystemExit:
return
except:
# p.terminate()
traceback.print_exc()
sys.stderr.write(" for help use --help \n\n")
def test(model, x, y, batch_size=64, dev=device.get_default_device()):
batch_number = x.shape[0] // batch_size
result = 0
for b in range(batch_number):
l_idx = b * batch_size
r_idx = (b + 1) * batch_size
x_batch = tensor.Tensor(device=dev, data=x[l_idx:r_idx])
target_batch = tensor.Tensor(device=dev, data=y[l_idx:r_idx])
output_batch = model.forward(x_batch)
result += accuracy(tensor.to_numpy(output_batch),
tensor.to_numpy(target_batch))
print("testing acc %6.2f" % (result / batch_number))
def main():
try:
# Setup argument parser
parser = ArgumentParser(description='DenseNet inference')
parser.add_argument("--port", default=9999, help="listen port")
parser.add_argument("--use_cpu",
action="store_true",
help="If set, load models onto CPU devices")
parser.add_argument("--parameter_file", default="densenet-121.pickle")
parser.add_argument("--depth",
type=int,
choices=[121, 169, 201, 161],
default=121)
parser.add_argument('--nb_classes', default=1000, type=int)
# Process arguments
args = parser.parse_args()
port = args.port
# start to train
agent = Agent(port)
net = model.create_net(args.depth, args.nb_classes, 0, args.use_cpu)
if args.use_cpu:
print('Using CPU')
dev = device.get_default_device()
else:
print('Using GPU')
dev = device.create_cuda_gpu()
net.to_device(dev)
print('start to load parameter_file')
model.init_params(net, args.parameter_file)
print('Finish loading models')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t ')
serve(net, labels, dev, agent)
# wait the agent finish handling http request
agent.stop()
except SystemExit:
return
except:
traceback.print_exc()
sys.stderr.write(" for help use --help \n\n")
return 2
def main():
try:
# Setup argument parser
parser = ArgumentParser(description="Wide residual network")
parser.add_argument("--port", default=9999, help="listen port")
parser.add_argument("--use_cpu", action="store_true",
help="If set, load models onto CPU devices")
parser.add_argument("--parameter_file", default="wrn-50-2.pickle")
parser.add_argument("--model", choices=['resnet', 'wrn', 'preact',
'addbn'], default='wrn')
parser.add_argument("--depth", type=int, choices=[18, 34, 50, 101,
152, 200],
default='50')
# Process arguments
args = parser.parse_args()
port = args.port
# start to train
agent = Agent(port)
net = model.create_net(args.model, args.depth, args.use_cpu)
if args.use_cpu:
print('Using CPU')
dev = device.get_default_device()
else:
print('Using GPU')
dev = device.create_cuda_gpu()
net.to_device(dev)
model.init_params(net, args.parameter_file)
print('Finish loading models')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t ')
serve(net, labels, dev, agent)
# acc = evaluate(net, '../val_list.txt', 'image/val', dev)
# print acc
# wait the agent finish handling http request
agent.stop()
except SystemExit:
return
except:
traceback.print_exc()
sys.stderr.write(" for help use --help \n\n")
return 2
def main():
try:
# Setup argument parser
parser = ArgumentParser(description="VGG inference")
parser.add_argument("--port", default=9999, help="listen port")
parser.add_argument("--use_cpu", action="store_true",
help="If set, load models onto CPU devices")
parser.add_argument("--parameter_file", default="")
parser.add_argument("--depth", type=int, choices=[11, 13, 16, 19],
default='11')
parser.add_argument("--batchnorm", action='store_true',
help='use batchnorm or not')
# Process arguments
args = parser.parse_args()
port = args.port
# start to train
agent = Agent(port)
net = model.create_net(args.depth, 1000, args.batchnorm, args.use_cpu)
if args.use_cpu:
print('Using CPU')
dev = device.get_default_device()
else:
print('Using GPU')
dev = device.create_cuda_gpu()
net.to_device(dev)
model.init_params(net, args.parameter_file)
print('Finish loading models')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t ')
serve(net, labels, dev, agent)
# acc = evaluate(net, '../val_list.txt', 'image/val', dev)
# print acc
# wait the agent finish handling http request
agent.stop()
except SystemExit:
return
except:
traceback.print_exc()
sys.stderr.write(" for help use --help \n\n")
return 2
def singa_to_onnx(niter, use_cpu=False):
if use_cpu:
print("Using CPU")
dev = device.get_default_device()
else:
print("Using GPU")
dev = device.create_cuda_gpu()
inputs = Tensor(
data=data,
device=dev,
requires_grad=False,
stores_grad=False,
name="input",
)
target = Tensor(
data=label,
device=dev,
requires_grad=False,
stores_grad=False,
name="target",
)
w0 = Tensor(shape=(2, 3), device=dev, requires_grad=True, stores_grad=True)
w0.gaussian(0.0, 0.1)
b0 = Tensor(shape=(3,), device=dev, requires_grad=True, stores_grad=True)
b0.set_value(0.0)
w1 = Tensor(shape=(3, 2), device=dev, requires_grad=True, stores_grad=True)
w1.gaussian(0.0, 0.1)
b1 = Tensor(shape=(2,), device=dev, requires_grad=True, stores_grad=True)
b1.set_value(0.0)
sgd = opt.SGD(0.1)
# training process
for i in range(100):
x = autograd.matmul(inputs, w0)
x = autograd.add_bias(x, b0)
x = autograd.relu(x)
x = autograd.matmul(x, w1)
x = autograd.add_bias(x, b1)
loss = autograd.softmax_cross_entropy(x, target)
for p, gp in autograd.backward(loss):
sgd.update(p, gp)
print("training loss = ", tensor.to_numpy(loss)[0])
sonnx.export([inputs], [x], file_path="mlp.onnx")
def train():
"""Start the training procedure
"""
num_epochs = 1
learning_rate = 0.05
batch_size = 8
data_loader = DataLoader(os.path.join("data", "fetal_health.csv"))
data_loader.standardize_column("baseline value")
x_train, y_train = data_loader.load_data(subset="train")
x_valid, y_valid = data_loader.load_data(subset="valid")
num_classes = len(np.unique(y_train))
num_samples, num_features = x_train.shape
assert x_train.shape[1] == x_valid.shape[
1], "Number of features should be equal!"
assert x_train.shape[0] == y_train.shape[
0], "Number of training samples should be equal!"
assert x_valid.shape[0] == y_valid.shape[
0], "Number of validation samples should be equal!"
dev = get_default_device()
tx = tensor.Tensor((num_samples, num_features), dev, tensor.float32)
ty = tensor.Tensor((num_samples, ), dev, tensor.int32)
sgd = opt.SGD(learning_rate)
model = create_MLP_model(perceptron_size=10, num_classes=num_classes)
model.set_optimizer(sgd)
model.compile([tx], is_train=True, use_graph=True, sequential=False)
model.train()
for i in range(num_epochs):
tx.copy_from_numpy(x_train.astype(np.float32))
ty.copy_from_numpy(y_train.astype(np.int32))
out, loss = model(tx, ty, 'fp32', spars=None)
# TODO: Add metric evaluation on validation data
if i % 10 == 0:
print("training loss = {:.3f}".format(tensor.to_numpy(loss)[0]))
def common(use_cpu):
file_path = "mnist.npz"
assert os.path.exists(
file_path
), "Pls download the MNIST dataset from https://s3.amazonaws.com/img-datasets/mnist.npz"
if use_cpu:
print("Using CPU")
dev = device.get_default_device()
else:
print("Using GPU")
dev = device.create_cuda_gpu()
train, test = load_data(file_path)
print(train[0].shape)
x_train = preprocess(train[0])
y_train = to_categorical(train[1], 10)
x_test = preprocess(test[0])
y_test = to_categorical(test[1], 10)
print("the shape of training data is", x_train.shape)
print("the shape of training label is", y_train.shape)
print("the shape of testing data is", x_test.shape)
print("the shape of testing label is", y_test.shape)
return (x_train, y_train), (x_test, y_test), dev
import unittest
from builtins import str
from singa import tensor
from singa import singa_wrap as singa
from singa import device
from singa import autograd
autograd.training = True
CTensor = singa.Tensor
gpu_dev = device.create_cuda_gpu()
cpu_dev = device.get_default_device()
dy = CTensor([2, 1, 2, 2])
singa.Gaussian(0.0, 1.0, dy)
def _tuple_to_string(t):
lt = [str(x) for x in t]
return '(' + ', '.join(lt) + ')'
class TestPythonOperation(unittest.TestCase):
def check_shape(self, actual, expect):
self.assertEqual(actual, expect, 'shape mismatch, actual shape is %s'
' exepcted is %s' % (_tuple_to_string(actual),
_tuple_to_string(expect))
)
def train(data_file, use_gpu, num_epoch=10, batch_size=100):
print 'Start intialization............'
lr = 0.1 # Learning rate
weight_decay = 0.0002
hdim = 1000
vdim = 784
opt = optimizer.SGD(momentum=0.8, weight_decay=weight_decay)
tweight = tensor.Tensor((vdim, hdim))
tweight.gaussian(0.0, 0.1)
tvbias = tensor.from_numpy(np.zeros(vdim, dtype = np.float32))
thbias = tensor.from_numpy(np.zeros(hdim, dtype = np.float32))
opt = optimizer.SGD(momentum=0.5, weight_decay=weight_decay)
print 'Loading data ..................'
train_x, valid_x = load_train_data(data_file)
if use_gpu:
dev = device.create_cuda_gpu()
else:
dev = device.get_default_device()
for t in [tweight, tvbias, thbias]:
t.to_device(dev)
num_train_batch = train_x.shape[0] / batch_size
print "num_train_batch = %d " % (num_train_batch)
for epoch in range(num_epoch):
trainerrorsum = 0.0
print 'Epoch %d' % epoch
for b in range(num_train_batch):
# positive phase
tdata = tensor.from_numpy(
train_x[(b * batch_size):((b + 1) * batch_size), : ])
tdata.to_device(dev)
tposhidprob = tensor.mult(tdata, tweight)
tposhidprob.add_row(thbias)
tposhidprob = tensor.sigmoid(tposhidprob)
tposhidrandom = tensor.Tensor(tposhidprob.shape, dev)
tposhidrandom.uniform(0.0, 1.0)
tposhidsample = tensor.gt(tposhidprob, tposhidrandom)
# negative phase
tnegdata = tensor.mult(tposhidsample, tweight.T())
tnegdata.add_row(tvbias)
tnegdata = tensor.sigmoid(tnegdata)
tneghidprob = tensor.mult(tnegdata, tweight)
tneghidprob.add_row(thbias)
tneghidprob = tensor.sigmoid(tneghidprob)
error = tensor.sum(tensor.square((tdata - tnegdata)))
trainerrorsum = error + trainerrorsum
tgweight = tensor.mult(tnegdata.T(), tneghidprob) -\
tensor.mult(tdata.T(), tposhidprob)
tgvbias = tensor.sum(tnegdata, 0) - tensor.sum(tdata, 0)
tghbias = tensor.sum(tneghidprob, 0) - tensor.sum(tposhidprob, 0)
opt.apply_with_lr(epoch, lr / batch_size, tgweight, tweight, 'w')
opt.apply_with_lr(epoch, lr / batch_size, tgvbias, tvbias, 'vb')
opt.apply_with_lr(epoch, lr / batch_size, tghbias, thbias, 'hb')
print 'training errorsum = %f' % (trainerrorsum)
tvaliddata = tensor.from_numpy(valid_x)
tvaliddata.to_device(dev)
tvalidposhidprob = tensor.mult(tvaliddata, tweight)
tvalidposhidprob.add_row(thbias)
tvalidposhidprob = tensor.sigmoid(tvalidposhidprob)
tvalidposhidrandom = tensor.Tensor(tvalidposhidprob.shape, dev)
initializer.uniform(tvalidposhidrandom, 0.0, 1.0)
tvalidposhidsample = tensor.gt(tvalidposhidprob, tvalidposhidrandom)
tvalidnegdata = tensor.mult(tvalidposhidsample, tweight.T())
tvalidnegdata.add_row(tvbias)
tvalidnegdata = tensor.sigmoid(tvalidnegdata)
validerrorsum = tensor.sum(tensor.square((tvaliddata - tvalidnegdata)))
print 'valid errorsum = %f' % (validerrorsum)
def train(data_file, use_gpu, num_epoch=10, batch_size=100):
print('Start intialization............')
lr = 0.1 # Learning rate
weight_decay = 0.0002
hdim = 1000
vdim = 784
tweight = tensor.Tensor((vdim, hdim))
tweight.gaussian(0.0, 0.1)
tvbias = tensor.from_numpy(np.zeros(vdim, dtype=np.float32))
thbias = tensor.from_numpy(np.zeros(hdim, dtype=np.float32))
opt = optimizer.SGD(momentum=0.5, weight_decay=weight_decay)
print('Loading data ..................')
train_x, valid_x = load_train_data(data_file)
if use_gpu:
dev = device.create_cuda_gpu()
else:
dev = device.get_default_device()
for t in [tweight, tvbias, thbias]:
t.to_device(dev)
num_train_batch = train_x.shape[0] // batch_size
print("num_train_batch = %d " % (num_train_batch))
for epoch in range(num_epoch):
trainerrorsum = 0.0
print('Epoch %d' % epoch)
for b in range(num_train_batch):
# positive phase
tdata = tensor.from_numpy(
train_x[(b * batch_size):((b + 1) * batch_size), :])
tdata.to_device(dev)
tposhidprob = tensor.mult(tdata, tweight)
tposhidprob = tposhidprob + thbias
tposhidprob = tensor.sigmoid(tposhidprob)
tposhidrandom = tensor.Tensor(tposhidprob.shape, dev)
tposhidrandom.uniform(0.0, 1.0)
tposhidsample = tensor.gt(tposhidprob, tposhidrandom)
# negative phase
tnegdata = tensor.mult(tposhidsample, tweight.T())
tnegdata = tnegdata + tvbias
tnegdata = tensor.sigmoid(tnegdata)
tneghidprob = tensor.mult(tnegdata, tweight)
tneghidprob = tneghidprob + thbias
tneghidprob = tensor.sigmoid(tneghidprob)
error = tensor.sum(tensor.square((tdata - tnegdata)))
trainerrorsum = error + trainerrorsum
tgweight = tensor.mult(tnegdata.T(), tneghidprob) \
- tensor.mult(tdata.T(), tposhidprob)
tgvbias = tensor.sum(tnegdata, 0) - tensor.sum(tdata, 0)
tghbias = tensor.sum(tneghidprob, 0) - tensor.sum(tposhidprob, 0)
opt.apply_with_lr(epoch, lr / batch_size, tgweight, tweight, 'w')
opt.apply_with_lr(epoch, lr / batch_size, tgvbias, tvbias, 'vb')
opt.apply_with_lr(epoch, lr / batch_size, tghbias, thbias, 'hb')
print('training erroraverage = %f' %
(tensor.to_numpy(trainerrorsum) / train_x.shape[0]))
tvaliddata = tensor.from_numpy(valid_x)
tvaliddata.to_device(dev)
tvalidposhidprob = tensor.mult(tvaliddata, tweight)
tvalidposhidprob = tvalidposhidprob + thbias
tvalidposhidprob = tensor.sigmoid(tvalidposhidprob)
tvalidposhidrandom = tensor.Tensor(tvalidposhidprob.shape, dev)
initializer.uniform(tvalidposhidrandom, 0.0, 1.0)
tvalidposhidsample = tensor.gt(tvalidposhidprob, tvalidposhidrandom)
tvalidnegdata = tensor.mult(tvalidposhidsample, tweight.T())
tvalidnegdata = tvalidnegdata + tvbias
tvalidnegdata = tensor.sigmoid(tvalidnegdata)
validerrorsum = tensor.sum(tensor.square((tvaliddata - tvalidnegdata)))
print('valid erroraverage = %f' %
(tensor.to_numpy(validerrorsum) / valid_x.shape[0]))
def serve(agent, use_cpu, parameter_file, topk=5):
if use_cpu:
print('running with cpu')
dev = device.get_default_device()
layer.engine = 'singacpp'
else:
print("runing with gpu")
dev = device.create_cuda_gpu()
agent = agent
print('Start intialization............')
net, _ = model.create_net(is_training=False)
net.load(parameter_file, use_pickle=True)
net.to_device(dev)
print('End intialization............')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t').tolist()
labels.insert(0, 'empty background')
while True:
key, val = agent.pull()
if key is None:
time.sleep(0.1)
continue
msg_type = MsgType.parse(key)
if msg_type.is_request():
try:
response = ""
ratio = 0.875
img = image_tool.load_img(val['image'])
height, width = img.size[0], img.size[1]
print(img.size)
crop_h, crop_w = int(height * ratio), int(width * ratio)
img = np.array(
image_tool.crop(img, (crop_h, crop_w), 'center').resize(
(299, 299))).astype(np.float32) / float(255)
img -= 0.5
img *= 2
# img[:,:,[0,1,2]] = img[:,:,[2,1,0]]
img = img.transpose((2, 0, 1))
images = np.expand_dims(img, axis=0)
x = tensor.from_numpy(images.astype(np.float32))
x.to_device(dev)
y = net.predict(x)
prob = np.average(tensor.to_numpy(y), 0)
# sort and reverse
idx = np.argsort(-prob)[0:topk]
for i in idx:
response += "%s:%s<br/>" % (labels[i], prob[i])
except:
traceback.print_exc()
response = "Sorry, system error during prediction."
agent.push(MsgType.kResponse, response)
elif MsgType.kCommandStop.equal(msg_type):
print('get stop command')
agent.push(MsgType.kStatus, "success")
break
else:
print('get unsupported message %s' % str(msg_type))
agent.push(MsgType.kStatus, "Unknown command")
break
# while loop
print("server stop")
def train(lr,
ssfolder,
meta_train,
meta_test,
data,
net,
mean,
max_epoch,
get_lr,
weight_decay,
input_shape,
batch_size=100,
use_cpu=False):
print 'Start intialization............'
if use_cpu:
print 'Using CPU'
dev = device.get_default_device()
else:
print 'Using GPU'
dev = device.create_cuda_gpu()
net.to_device(dev)
opt = optimizer.SGD(momentum=0.9, weight_decay=weight_decay)
for (p, specs) in zip(net.param_names(), net.param_specs()):
opt.register(p, specs)
dl_train = dt.MImageBatchIter(meta_train,
batch_size,
dt.load_from_img,
shuffle=True,
delimiter=' ',
image_folder=data,
capacity=10)
dl_train.start()
dl_test = dt.MImageBatchIter(meta_test,
batch_size,
dt.load_from_img,
shuffle=False,
delimiter=' ',
image_folder=data,
capacity=10)
dl_test.start()
num_train = dl_train.num_samples
num_train_batch = num_train / batch_size
num_test = dl_test.num_samples
num_test_batch = num_test / batch_size
remainder = num_test % batch_size
best_acc = 0.0
best_loss = 0.0
nb_epoch_for_best_acc = 0
tx = tensor.Tensor((batch_size, ) + input_shape, dev)
ty = tensor.Tensor((batch_size, ), dev, core_pb2.kInt)
for epoch in range(max_epoch):
loss, acc = 0.0, 0.0
print 'Epoch %d' % epoch
for b in range(num_train_batch):
t1 = time.time()
x, y = dl_train.next()
#print 'x.norm: ', np.linalg.norm(x)
x -= mean
t2 = time.time()
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
#print 'copy tx ty ok'
grads, (l, a) = net.train(tx, ty)
loss += l
acc += a
for (s, p, g) in zip(net.param_names(), net.param_values(), grads):
opt.apply_with_lr(epoch, lr, g, p, str(s), b)
t3 = time.time()
# update progress bar
info = datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S') \
+ ', batch %d: training loss = %f, accuracy = %f, load_time = %.4f, training_time = %.4f' % (b, l, a, t2-t1, t3-t2)
print info
#utils.update_progress(b * 1.0 / num_train_batch, info)
disp = datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S') \
+ ', epoch %d: training loss = %f, training accuracy = %f, lr = %f' \
% (epoch, loss / num_train_batch, acc / num_train_batch, lr)
logging.info(disp)
print disp
if epoch % 50 == 0 and epoch > 0:
try:
net.save(os.path.join(ssfolder, 'model-%d' % epoch),
buffer_size=200)
except Exception as e:
print e
net.save(os.path.join(ssfolder, 'model-%d' % epoch),
buffer_size=300)
sinfo = datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S') \
+ ', epoch %d: save model in %s' % (epoch, os.path.join(ssfolder, 'model-%d.bin' % epoch))
logging.info(sinfo)
print sinfo
loss, acc = 0.0, 0.0
#dominator = num_test_batch
#print 'num_test_batch: ', num_test_batch
for b in range(num_test_batch):
x, y = dl_test.next()
x -= mean
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
l, a = net.evaluate(tx, ty)
loss += l * batch_size
acc += a * batch_size
#print datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S') \
#+ ' batch %d, test loss = %f, test accuracy = %f' % (b, l, a)
if remainder > 0:
#print 'remainder: ', remainder
x, y = dl_test.next()
x -= mean
tx_rmd = tensor.Tensor((remainder, ) + input_shape, dev)
ty_rmd = tensor.Tensor((remainder, ), dev, core_pb2.kInt)
tx_rmd.copy_from_numpy(x[0:remainder, :, :])
ty_rmd.copy_from_numpy(y[0:remainder, ])
l, a = net.evaluate(tx_rmd, ty_rmd)
loss += l * remainder
acc += a * remainder
#dominator += 1
#print datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S') \
#+ ' test loss = %f, test accuracy = %f' % (l, a)
acc /= num_test
loss /= num_test
disp = datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S') \
+ ', epoch %d: test loss = %f, test accuracy = %f' % (epoch, loss, acc)
logging.info(disp)
print disp
if acc > best_acc + 0.005:
best_acc = acc
best_loss = loss
nb_epoch_for_best_acc = 0
else:
nb_epoch_for_best_acc += 1
if nb_epoch_for_best_acc > 8:
break
elif nb_epoch_for_best_acc % 4 == 0:
lr /= 10
logging.info("Decay the learning rate from %f to %f" %
(lr * 10, lr))
try:
net.save(str(os.path.join(ssfolder, 'model')), buffer_size=200)
except Exception as e:
net.save(str(os.path.join(ssfolder, 'model')), buffer_size=300)
sinfo = datetime.datetime.now().strftime('%b-%d-%y %H:%M:%S') \
+ ', save final model in %s' % os.path.join(ssfolder, 'model.bin')
logging.info(sinfo)
print sinfo
dl_train.end()
dl_test.end()
return (best_acc, best_loss)
def train(self, data, max_epoch, model_path='model'):
if self.use_cpu:
print 'Using CPU'
self.dev = device.get_default_device()
else:
print 'Using GPU'
self.dev = device.create_cuda_gpu()
self.net.to_device(self.dev)
opt = optimizer.SGD(momentum=0.9, weight_decay=1e-4)
# opt = optimizer.RMSProp(constraint=optimizer.L2Constraint(5))
for (p, n) in zip(self.net.param_values(), self.net.param_names()):
if 'var' in n:
p.set_value(1.0)
elif 'gamma' in n:
p.uniform(0, 1)
elif 'weight' in n:
p.gaussian(0, 0.01)
else:
p.set_value(0.0)
print n, p.shape, p.l1()
tx = tensor.Tensor((self.batch_size, self.maxlen, self.vocab_size),
self.dev)
ty = tensor.Tensor((self.batch_size, ), self.dev, core_pb2.kInt)
train_x, train_y, test_x, test_y = data
num_train_batch = train_x.shape[0] / self.batch_size
num_test_batch = test_x.shape[0] / self.batch_size
idx = np.arange(train_x.shape[0], dtype=np.int32)
for epoch in range(max_epoch):
np.random.shuffle(idx)
loss, acc = 0.0, 0.0
print '\nEpoch %d' % epoch
start = time()
for b in range(num_train_batch):
batch_loss, batch_acc = 0.0, 0.0
grads = []
x = train_x[
idx[b * self.batch_size:(b + 1) *
self.batch_size]] # x.shape = (batch_size, maxlen)
y = train_y[idx[b * self.batch_size:(b + 1) *
self.batch_size]] # y.shape = (batch_size,)
# for input as (batch_size, max_len, vocab_size)
sam_arrs = convert_samples(x, x.shape[1], self.vocab_size,
self.dev)
tx.copy_from_numpy(sam_arrs)
ty.copy_from_numpy(np.array(y, dtype='int32'))
grads, (batch_loss, batch_acc) = self.net.train(tx, ty)
for (s, p, g) in zip(self.net.param_names(),
self.net.param_values(), grads):
opt.apply_with_lr(epoch, get_lr(epoch), g, p, str(s), b)
# update progress bar
utils.update_progress(
b * 1.0 / num_train_batch,
'training loss = %f, accuracy = %f' %
(batch_loss, batch_acc))
loss += batch_loss
acc += batch_acc
print "\ntraining time = ", time() - start
info = 'training loss = %f, training accuracy = %f, lr = %f' \
% (loss / num_train_batch, acc / num_train_batch, get_lr(epoch))
print info
loss, acc = 0.0, 0.0
start = time()
for b in range(num_test_batch):
batch_loss, batch_acc = 0.0, 0.0
x = test_x[b * self.batch_size:(b + 1) *
self.batch_size] # x.shape = (batch_size, maxlen)
y = test_y[b * self.batch_size:(b + 1) * self.batch_size]
sam_arrs = convert_samples(x, x.shape[1], self.vocab_size,
self.dev)
tx.copy_from_numpy(sam_arrs)
ty.copy_from_numpy(np.array(y, dtype='int32'))
grads, (batch_loss, batch_acc) = self.net.train(tx, ty)
loss += batch_loss
acc += batch_acc
print "evaluation time = ", time() - start
print 'test loss = %f, test accuracy = %f \n' \
% (loss / num_test_batch, acc / num_test_batch)
if (epoch % 2) == 1 or epoch + 1 == max_epoch:
# checkpoint the file model
with open('%s_%d.bin' % (model_path, epoch), 'wb') as fd:
print 'saving model to %s_%d.bin' % (model_path, epoch)
d = {}
for name, w in zip(self.net.param_names(),
self.net.param_values()):
w.to_host()
d[name] = tensor.to_numpy(w)
w.to_device(self.dev)
pickle.dump(d, fd)
def train_mnist_cnn(DIST=False,
local_rank=None,
world_size=None,
nccl_id=None,
spars=0,
topK=False,
corr=True):
# Define the hypermeters good for the mnist_cnn
max_epoch = 10
batch_size = 128
sgd = opt.SGD(lr=0.005, momentum=0.9, weight_decay=1e-5)
# Prepare training and valadiation data
train_x, train_y, test_x, test_y = load_dataset()
IMG_SIZE = 28
num_classes = 10
train_y = to_categorical(train_y, num_classes)
test_y = to_categorical(test_y, num_classes)
# Normalization
train_x = train_x / 255
test_x = test_x / 255
if DIST:
# For Distributed GPU Training
'''
sgd = opt.DistOpt(sgd,
nccl_id=nccl_id,
local_rank=local_rank,
world_size=world_size)
'''
dev = device.get_default_device()
# create kvstore
kv_type = 'dist_sync' #set synchronization mode
lr = 0.005
kv = singa_kvstore.create_kvstore(kv_type,
'SingaSGD',
lr=0.005,
momentum=0.9,
weight_decay=1e-5)
global_rank = kv.rank
world_size = kv.num_workers
# Dataset partition for distributed training
train_x, train_y = data_partition(train_x, train_y, global_rank,
world_size)
test_x, test_y = data_partition(test_x, test_y, global_rank,
world_size)
# create model
model = CNN()
'''
num_channels = train_x.shape[1]
image_size = train_x.shape[2]
data_size = np.prod(train_x.shape[1:train_x.ndim]).item()
num_classes = (np.max(train_y) + 1).item()
model = resnet.resnet18(num_channels=1, num_classes=num_classes)
'''
tx = tensor.Tensor((batch_size, 1, IMG_SIZE, IMG_SIZE), dev,
tensor.float32)
ty = tensor.Tensor((batch_size, num_classes), dev, tensor.int32)
num_train_batch = train_x.shape[0] // batch_size
num_test_batch = test_x.shape[0] // batch_size
idx = np.arange(train_x.shape[0], dtype=np.int32)
'''
if DIST:
#Initial a batch to help obtain model parameters
autograd.training = True
x = np.random.randn(batch_size, 1, IMG_SIZE,
IMG_SIZE).astype(np.float32)
y = np.zeros(shape=(batch_size, num_classes), dtype=np.int32)
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
out = model.forward(tx)
loss = autograd.softmax_cross_entropy(out, ty)
#Initial kv store for workers of ps-architecture
key = 0
for p, g in autograd.backward(loss):
kv.init(key, mx.nd.array(tensor.to_numpy(p)))
key += 1
'''
# Training and Evaulation Loop
for epoch in range(max_epoch):
start_time = time.time()
np.random.shuffle(idx)
if (DIST == True):
print('^_^Starting Epoch %d:' % (epoch))
# Training Phase
autograd.training = True
train_correct = np.zeros(shape=[1], dtype=np.float32)
test_correct = np.zeros(shape=[1], dtype=np.float32)
train_loss = np.zeros(shape=[1], dtype=np.float32)
time_start = time.time()
for b in range(num_train_batch):
x = train_x[idx[b * batch_size:(b + 1) * batch_size]]
x = augmentation(x, batch_size)
y = train_y[idx[b * batch_size:(b + 1) * batch_size]]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
out = model.forward(tx)
loss = autograd.softmax_cross_entropy(out, ty)
train_correct += accuracy(tensor.to_numpy(out), y)
train_loss += tensor.to_numpy(loss)[0]
singa_kvstore.backward_and_update(kv, loss)
'''
if DIST:
#push
kv_pairs = []
key = 0
for p, g in autograd.backward(loss):
kv.push(key,mx.nd.array(tensor.to_numpy(g)))
kv_pairs.append((key,p,g))
key += 1
#pull
for key,p,g in kv_pairs:
out_buf = mx.nd.zeros(p.shape)
kv.pull(key,out=out_buf)
p.copy_from_numpy(out_buf.asnumpy())
'''
# Evaluation Phase
if b % 20 != 0:
continue
autograd.training = False
num_test_batch_inside = 20
test_correct = 0
for b in range(num_test_batch_inside):
x = test_x[b * batch_size:(b + 1) * batch_size]
y = test_y[b * batch_size:(b + 1) * batch_size]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
out_test = model.forward(tx)
test_correct += accuracy(tensor.to_numpy(out_test), y)
print('Evaluation accuracy = %f' %
(test_correct / (batch_size * num_test_batch_inside)),
flush=True)
autograd.training = True
print('epoch time is %f' % (time.time() - time_start))
def train_mnist_cnn(DIST=False,
local_rank=None,
world_size=None,
nccl_id=None,
spars=0,
topK=False,
corr=True):
# Define the hypermeters good for the mnist_cnn
max_epoch = 10
batch_size = 64
sgd = opt.SGD(lr=0.005, momentum=0.9, weight_decay=1e-5)
# Prepare training and valadiation data
train_x, train_y, test_x, test_y = load_dataset()
IMG_SIZE = 28
num_classes = 10
train_y = to_categorical(train_y, num_classes)
test_y = to_categorical(test_y, num_classes)
# Normalization
train_x = train_x / 255
test_x = test_x / 255
if DIST:
# For Distributed GPU Training
sgd = opt.DistOpt(sgd,
nccl_id=nccl_id,
local_rank=local_rank,
world_size=world_size)
dev = device.get_default_device(sgd.local_rank)
# Dataset partition for distributed training
train_x, train_y = data_partition(train_x, train_y, sgd.global_rank,
sgd.world_size)
test_x, test_y = data_partition(test_x, test_y, sgd.global_rank,
sgd.world_size)
world_size = sgd.world_size
else:
# For Single GPU
dev = device.get_default_device()
world_size = 1
# create model
model = CNN()
tx = tensor.Tensor((batch_size, 1, IMG_SIZE, IMG_SIZE), dev,
tensor.float32)
ty = tensor.Tensor((batch_size, num_classes), dev, tensor.int32)
num_train_batch = train_x.shape[0] // batch_size
num_test_batch = test_x.shape[0] // batch_size
idx = np.arange(train_x.shape[0], dtype=np.int32)
if DIST:
#Sychronize the initial parameters
autograd.training = True
x = np.random.randn(batch_size, 1, IMG_SIZE,
IMG_SIZE).astype(np.float32)
y = np.zeros(shape=(batch_size, num_classes), dtype=np.int32)
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
out = model.forward(tx)
loss = autograd.softmax_cross_entropy(out, ty)
for p, g in autograd.backward(loss):
print('tensor.data.type is %s' % type(p.data).__name__)
synchronize(p, sgd)
# Training and Evaulation Loop
for epoch in range(max_epoch):
start_time = time.time()
np.random.shuffle(idx)
if ((DIST == False) or (sgd.global_rank == 0)):
print('Starting Epoch %d:' % (epoch))
# Training Phase
autograd.training = True
train_correct = np.zeros(shape=[1], dtype=np.float32)
test_correct = np.zeros(shape=[1], dtype=np.float32)
train_loss = np.zeros(shape=[1], dtype=np.float32)
time_start = time.time()
for b in range(num_train_batch):
x = train_x[idx[b * batch_size:(b + 1) * batch_size]]
x = augmentation(x, batch_size)
y = train_y[idx[b * batch_size:(b + 1) * batch_size]]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
out = model.forward(tx)
loss = autograd.softmax_cross_entropy(out, ty)
train_correct += accuracy(tensor.to_numpy(out), y)
train_loss += tensor.to_numpy(loss)[0]
if DIST:
if (spars == 0):
sgd.backward_and_update(loss, threshold=50000)
else:
sgd.backward_and_sparse_update(loss,
spars=spars,
topK=topK,
corr=corr)
else:
sgd.backward_and_update(loss)
# Evaluation Phase
if b % 20 != 0:
continue
autograd.training = False
num_test_batch_inside = 20
test_correct = 0
for b in range(num_test_batch_inside):
x = test_x[b * batch_size:(b + 1) * batch_size]
y = test_y[b * batch_size:(b + 1) * batch_size]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
out_test = model.forward(tx)
test_correct += accuracy(tensor.to_numpy(out_test), y)
print('Evaluation accuracy = %f' %
(test_correct / (batch_size * num_test_batch_inside)),
flush=True)
autograd.training = True
print('epoch time is %f' % (time.time() - time_start))
if DIST:
# Reduce the Evaluation Accuracy and Loss from Multiple Devices
reducer = tensor.Tensor((1, ), dev, tensor.float32)
train_correct = reduce_variable(train_correct, sgd, reducer)
train_loss = reduce_variable(train_loss, sgd, reducer)
# Output the Training Loss and Accuracy
if ((DIST == False) or (sgd.global_rank == 0)):
print('Training loss = %f, training accuracy = %f' %
(train_loss, train_correct /
(num_train_batch * batch_size * world_size)),
flush=True)
# Evaluation Phase
autograd.training = False
for b in range(num_test_batch):
x = test_x[b * batch_size:(b + 1) * batch_size]
y = test_y[b * batch_size:(b + 1) * batch_size]
tx.copy_from_numpy(x)
ty.copy_from_numpy(y)
out_test = model.forward(tx)
test_correct += accuracy(tensor.to_numpy(out_test), y)
if DIST:
# Reduce the Evaulation Accuracy from Multiple Devices
test_correct = reduce_variable(test_correct, sgd, reducer)
# Output the Evaluation Accuracy
if ((DIST == False) or (sgd.global_rank == 0)):
print('Evaluation accuracy = %f, Elapsed Time = %fs' %
(test_correct / (num_test_batch * batch_size * world_size),
time.time() - start_time),
flush=True)
import unittest
from builtins import str
from singa import tensor
from singa import singa_wrap as singa
from singa import device
from singa import autograd
import numpy as np
autograd.training = True
CTensor = singa.Tensor
gpu_dev = device.create_cuda_gpu()
cpu_dev = device.get_default_device()
dy = CTensor([2, 1, 2, 2])
singa.Gaussian(0.0, 1.0, dy)
def _tuple_to_string(t):
lt = [str(x) for x in t]
return '(' + ', '.join(lt) + ')'
def prepare_inputs_targets_for_rnn_test():
x_0 = np.random.random((2, 3)).astype(np.float32)
x_1 = np.random.random((2, 3)).astype(np.float32)
x_2 = np.random.random((2, 3)).astype(np.float32)
def serve(agent, net, use_cpu, parameter_file, topk=5):
if use_cpu:
print('running with cpu')
dev = device.get_default_device()
layer.engine = 'singacpp'
else:
print("runing with gpu")
dev = device.create_cuda_gpu()
agent = agent
print('Start intialization............')
# fix the bug when creating net
if net == 'v3':
model = inception_v3
else:
model = inception_v4
net, _ = model.create_net(is_training=False)
net.load(parameter_file, use_pickle=True)
net.to_device(dev)
print('End intialization............')
labels = np.loadtxt('synset_words.txt', str, delimiter='\t').tolist()
labels.insert(0, 'empty background')
while True:
key, val = agent.pull()
if key is None:
time.sleep(0.1)
continue
msg_type = MsgType.parse(key)
if msg_type.is_request():
try:
response = ""
ratio = 0.875
img = image_tool.load_img(val['image'])
height, width = img.size[0], img.size[1]
print(img.size)
crop_h, crop_w = int(height * ratio), int(width * ratio)
img = np.array(image_tool.crop(img,\
(crop_h, crop_w), 'center').\
resize((299, 299))).astype(np.float32) / float(255)
img -= 0.5
img *= 2
# img[:,:,[0,1,2]] = img[:,:,[2,1,0]]
img = img.transpose((2, 0, 1))
images = np.expand_dims(img, axis=0)
x = tensor.from_numpy(images.astype(np.float32))
x.to_device(dev)
y = net.predict(x)
prob = np.average(tensor.to_numpy(y), 0)
# sort and reverse
idx = np.argsort(-prob)[0:topk]
for i in idx:
response += "%s:%s<br/>" % (labels[i], prob[i])
except:
traceback.print_exc()
response = "Sorry, system error during prediction."
agent.push(MsgType.kResponse, response)
elif MsgType.kCommandStop.equal(msg_type):
print('get stop command')
agent.push(MsgType.kStatus, "success")
break
else:
print('get unsupported message %s' % str(msg_type))
agent.push(MsgType.kStatus, "Unknown command")
break
# while loop
print("server stop")
