def vgg19_train_and_eval(train_data,
test_data,
num_quantization_bits=32,
minibatch_size=128,
epoch_size=1281167,
max_epochs=80,
restore=True,
log_to_file=None,
num_mbs_per_log=None,
gen_heartbeat=False):
_cntk_py.set_computation_network_trace_level(0)
progress_printer = ProgressPrinter(freq=num_mbs_per_log,
tag='Training',
log_to_file=log_to_file,
rank=Communicator.rank(),
gen_heartbeat=gen_heartbeat,
num_epochs=max_epochs)
network = create_vgg19()
trainer = create_trainer(network, epoch_size, num_quantization_bits,
progress_printer)
train_source = create_image_mb_source(train_data,
True,
total_number_of_samples=max_epochs *
epoch_size)
test_source = create_image_mb_source(
test_data, False, total_number_of_samples=FULL_DATA_SWEEP)
train_and_test(network, trainer, train_source, test_source, minibatch_size,
epoch_size, restore)
def convnet_cifar10_dataaug(train_data,
test_data,
mean_data,
num_quantization_bits=32,
max_epochs=2,
log_to_file=None,
num_mbs_per_log=None,
gen_heartbeat=False):
_cntk_py.set_computation_network_trace_level(0)
epoch_size = 50000
progress_printer = ProgressPrinter(freq=num_mbs_per_log,
tag='Training',
log_to_file=log_to_file,
rank=Communicator.rank(),
gen_heartbeat=gen_heartbeat,
num_epochs=max_epochs)
network = create_conv_network()
trainer = create_trainer(network, epoch_size, num_quantization_bits)
train_source = create_image_mb_source(train_data,
mean_data,
train=True,
total_number_of_samples=max_epochs *
epoch_size)
test_source = create_image_mb_source(
test_data,
mean_data,
train=False,
total_number_of_samples=cntk.io.FULL_DATA_SWEEP)
train_and_test(network, trainer, train_source, test_source,
progress_printer, epoch_size)
def resnet_cifar10(train_data,
test_data,
mean_data,
network_name,
epoch_size,
num_quantization_bits=32,
block_size=3200,
warm_up=0,
max_epochs=5,
restore=True,
log_to_file=None,
num_mbs_per_log=None,
gen_heartbeat=False,
scale_up=False,
profiling=False):
set_computation_network_trace_level(0)
# NOTE: scaling up minibatch_size increases sample throughput. In 8-GPU machine,
# ResNet110 samples-per-second is ~7x of single GPU, comparing to ~3x without scaling
# up. However, bigger minimatch size on the same number of samples means less updates,
# thus leads to higher training error. This is a trade-off of speed and accuracy
minibatch_size = 128 * (Communicator.num_workers() if scale_up else 1)
progress_printer = ProgressPrinter(freq=num_mbs_per_log,
tag='Training',
log_to_file=log_to_file,
rank=Communicator.rank(),
gen_heartbeat=gen_heartbeat,
num_epochs=max_epochs)
network = create_resnet_network(network_name)
trainer = create_trainer(network, minibatch_size, epoch_size,
num_quantization_bits, block_size, warm_up,
progress_printer)
train_source = create_image_mb_source(train_data,
mean_data,
train=True,
total_number_of_samples=max_epochs *
epoch_size)
test_source = create_image_mb_source(
test_data,
mean_data,
train=False,
total_number_of_samples=cntk.io.FULL_DATA_SWEEP)
train_and_test(network, trainer, train_source, test_source, minibatch_size,
epoch_size, profiling)
def vgg19_train_and_eval(train_data, test_data, num_quantization_bits=32, minibatch_size=128, epoch_size = 1281167, max_epochs=80,
restore=True, log_to_file=None, num_mbs_per_log=None, gen_heartbeat=False):
_cntk_py.set_computation_network_trace_level(0)
progress_printer = ProgressPrinter(
freq=num_mbs_per_log,
tag='Training',
log_to_file=log_to_file,
rank=Communicator.rank(),
gen_heartbeat=gen_heartbeat,
num_epochs=max_epochs)
network = create_vgg19()
trainer = create_trainer(network, epoch_size, num_quantization_bits)
train_source = create_image_mb_source(train_data, True, total_number_of_samples=max_epochs * epoch_size)
test_source = create_image_mb_source(test_data, False, total_number_of_samples=FULL_DATA_SWEEP)
train_and_test(network, trainer, train_source, test_source, progress_printer, minibatch_size, epoch_size, restore)
def bn_inception_train_and_eval(train_data, test_data, mean_data, num_quantization_bits=32, epoch_size=50000, max_epochs=200,
restore=True, log_to_file=None, num_mbs_per_log=100, gen_heartbeat=False, scale_up=False, profiling=False):
_cntk_py.set_computation_network_trace_level(0)
# NOTE: scaling up minibatch_size increases sample throughput. In 8-GPU machine,
# ResNet110 samples-per-second is ~7x of single GPU, comparing to ~3x without scaling
# up. However, bigger minimatch size on the same number of samples means less updates,
# thus leads to higher training error. This is a trade-off of speed and accuracy
minibatch_size = 128 * (Communicator.num_workers() if scale_up else 1)
progress_printer = ProgressPrinter(
freq=num_mbs_per_log,
tag='Training',
log_to_file=log_to_file,
rank=Communicator.rank(),
gen_heartbeat=gen_heartbeat,
num_epochs=max_epochs)
network = create_bn_inception()
trainer = create_trainer(network, epoch_size, max_epochs, minibatch_size, num_quantization_bits, progress_printer)
train_source = create_image_mb_source(train_data, mean_data, True, total_number_of_samples=max_epochs * epoch_size)
test_source = create_image_mb_source(test_data, mean_data, False, total_number_of_samples=FULL_DATA_SWEEP)
train_and_test(network, trainer, train_source, test_source, minibatch_size, epoch_size, restore, profiling)