def get_model(conf, num_class=10, data_parallel=True):
name = conf['type']
if name == 'resnet50':
model = ResNet(dataset='imagenet',
depth=50,
num_classes=num_class,
bottleneck=True)
elif name == 'resnet200':
model = ResNet(dataset='imagenet',
depth=200,
num_classes=num_class,
bottleneck=True)
elif name == 'wresnet40_2':
model = WideResNet(40, 2, dropout_rate=None, num_classes=num_class)
elif name == 'wresnet28_10':
model = WideResNet(28, 10, dropout_rate=None, num_classes=num_class)
elif name == 'shakeshake26_2x32d':
model = ShakeResNet(26, 32, num_class)
elif name == 'shakeshake26_2x64d':
model = ShakeResNet(26, 64, num_class)
elif name == 'shakeshake26_2x96d':
model = ShakeResNet(26, 96, num_class)
elif name == 'shakeshake26_2x112d':
model = ShakeResNet(26, 112, num_class)
elif name == 'shakeshake26_2x96d_next':
model = ShakeResNeXt(26, 96, 4, num_class)
elif name == 'pyramid':
model = PyramidNet('cifar10',
depth=conf['depth'],
alpha=conf['alpha'],
num_classes=num_class,
bottleneck=conf['bottleneck'])
else:
raise NameError('no model named, %s' % name)
if data_parallel:
model = model.cuda()
model = DataParallel(model)
else:
import horovod.torch as hvd
device = torch.device('cuda', hvd.local_rank())
model = model.to(device)
cudnn.benchmark = True
return model
def get_model(conf, num_class=10, local_rank=-1):
"""
获取训练模型
:param conf: 模型的配置文件
:param num_class: 训练集类的数量
:param local_rank: gpu核心数量
:return: 返回各种网络的模型
"""
name = conf['type']
if name == 'resnet50':
model = ResNet(dataset='imagenet',
depth=50,
num_classes=num_class,
bottleneck=True)
elif name == 'resnet200':
model = ResNet(dataset='imagenet',
depth=200,
num_classes=num_class,
bottleneck=True)
elif name == 'wresnet40_2':
model = WideResNet(40, 2, dropout_rate=0.0, num_classes=num_class)
elif name == 'wresnet28_10':
model = WideResNet(28, 10, dropout_rate=0.0, num_classes=num_class)
elif name == 'shakeshake26_2x32d':
model = ShakeResNet(26, 32, num_class)
elif name == 'shakeshake26_2x64d':
model = ShakeResNet(26, 64, num_class)
elif name == 'shakeshake26_2x96d':
model = ShakeResNet(26, 96, num_class)
elif name == 'shakeshake26_2x112d':
model = ShakeResNet(26, 112, num_class)
elif name == 'shakeshake26_2x96d_next':
model = ShakeResNeXt(26, 96, 4, num_class)
elif name == 'pyramid':
model = PyramidNet('cifar10',
depth=conf['depth'],
alpha=conf['alpha'],
num_classes=num_class,
bottleneck=conf['bottleneck'])
elif 'efficientnet' in name:
model = EfficientNet.from_name(
name,
condconv_num_expert=conf['condconv_num_expert'],
norm_layer=None) # TpuBatchNormalization
if local_rank >= 0:
model = nn.SyncBatchNorm.convert_sync_batchnorm(model)
def kernel_initializer(module):
def get_fan_in_out(module):
num_input_fmaps = module.weight.size(1)
num_output_fmaps = module.weight.size(0)
receptive_field_size = 1
if module.weight.dim() > 2:
receptive_field_size = module.weight[0][0].numel()
fan_in = num_input_fmaps * receptive_field_size
fan_out = num_output_fmaps * receptive_field_size
return fan_in, fan_out
if isinstance(module, torch.nn.Conv2d):
# https://github.com/tensorflow/tpu/blob/master/models/official/efficientnet/efficientnet_model.py#L58
fan_in, fan_out = get_fan_in_out(module)
torch.nn.init.normal_(module.weight,
mean=0.0,
std=np.sqrt(2.0 / fan_out))
if module.bias is not None:
torch.nn.init.constant_(module.bias, val=0.)
elif isinstance(module, RoutingFn):
torch.nn.init.xavier_uniform_(module.weight)
torch.nn.init.constant_(module.bias, val=0.)
elif isinstance(module, torch.nn.Linear):
# https://github.com/tensorflow/tpu/blob/master/models/official/efficientnet/efficientnet_model.py#L82
fan_in, fan_out = get_fan_in_out(module)
delta = 1.0 / np.sqrt(fan_out)
torch.nn.init.uniform_(module.weight, a=-delta, b=delta)
if module.bias is not None:
torch.nn.init.constant_(module.bias, val=0.)
model.apply(kernel_initializer)
else:
raise NameError('no model named, %s' % name)
if local_rank >= 0:
device = torch.device('cuda', local_rank)
model = model.to(device)
model = DistributedDataParallel(model,
device_ids=[local_rank],
output_device=local_rank)
else:
model = model.cuda()
# model = DataParallel(model)
cudnn.benchmark = True
return model
def get_model(conf, num_class=10, data_parallel=True):
name = conf['type']
if name == 'wresnet40_2':
model = WideResNet(40, 2, dropout_rate=0.0, num_classes=num_class)
elif name == 'wresnet28_10':
model = WideResNet(28, 10, dropout_rate=0.0, num_classes=num_class)
elif name == 'shakeshake26_2x32d':
model = ShakeResNet(26, 32, num_class)
elif name == 'shakeshake26_2x96d':
model = ShakeResNet(26, 96, num_class)
elif name == 'shakeshake26_2x112d':
model = ShakeResNet(26, 112, num_class)
elif name == 'pyramid':
model = PyramidNet('cifar10',
depth=conf['depth'],
alpha=conf['alpha'],
num_classes=num_class,
bottleneck=conf['bottleneck'])
elif name == 'pyramid_skip':
model = PyramidSkipNet(depth=conf['depth'],
alpha=conf['alpha'],
num_classes=num_class,
bottleneck=conf['bottleneck'])
elif name == 'resnet50':
model = models.resnet50(num_classes=num_class, pretrained=None)
model.avgpool = nn.AdaptiveAvgPool2d((1, 1))
model.fc = nn.Linear(512 * 1, num_class)
elif name == 'resnet200':
model = preresnet200(num_classes=num_class)
model.features._modules['final_pool'] = nn.AdaptiveAvgPool2d((1, 1))
else:
raise NameError('no model named, %s' % name)
if data_parallel:
model = model.cuda()
model = DataParallel(model)
else:
import horovod.torch as hvd
device = torch.device('cuda', hvd.local_rank())
model = model.to(device)
cudnn.benchmark = True
return model