torchinfo
v1.8.0
（以前是火炬 - 萨默里）
Torchinfo提供了pytorch中print(your_model)提供的信息，类似于Tensorflow的model.summary() API，以查看模型的可视化，在调试网络时，这很有帮助。在此项目中，我们在Pytorch中实现了类似的功能，并创建了一个干净，简单的接口以在您的项目中使用。
这是 @sksq96和@nmhkahn的原始Torchsummary和Torchsummaryx Projects的完全重写版本。该项目通过引入全新的API来解决原始项目中留下的所有问题，并提出了拉的请求。
支持Pytorch版本1.4.0+。
pip install torchinfo
或者，通过conda：
conda install -c conda-forge torchinfo
from torchinfo import summary
model = ConvNet ()
batch_size = 16
summary ( model , input_size = ( batch_size , 1 , 28 , 28 )) ================================================================================================================
Layer (type:depth-idx) Input Shape Output Shape Param # Mult-Adds
================================================================================================================
SingleInputNet [7, 1, 28, 28] [7, 10] -- --
├─Conv2d: 1-1 [7, 1, 28, 28] [7, 10, 24, 24] 260 1,048,320
├─Conv2d: 1-2 [7, 10, 12, 12] [7, 20, 8, 8] 5,020 2,248,960
├─Dropout2d: 1-3 [7, 20, 8, 8] [7, 20, 8, 8] -- --
├─Linear: 1-4 [7, 320] [7, 50] 16,050 112,350
├─Linear: 1-5 [7, 50] [7, 10] 510 3,570
================================================================================================================
Total params: 21,840
Trainable params: 21,840
Non-trainable params: 0
Total mult-adds (M): 3.41
================================================================================================================
Input size (MB): 0.02
Forward/backward pass size (MB): 0.40
Params size (MB): 0.09
Estimated Total Size (MB): 0.51
================================================================================================================
注意：如果您使用的是Jupyter笔记本或Google Colab， summary(model, ...)必须是单元格的返回值。如果不是这样，则应将摘要包装在打印（），例如print(summary(model, ...))中。有关示例，请参见tests/jupyter_test.ipynb 。
此版本现在支持：
其他新功能：
社区贡献：
def summary (
model : nn . Module ,
input_size : Optional [ INPUT_SIZE_TYPE ] = None ,
input_data : Optional [ INPUT_DATA_TYPE ] = None ,
batch_dim : Optional [ int ] = None ,
cache_forward_pass : Optional [ bool ] = None ,
col_names : Optional [ Iterable [ str ]] = None ,
col_width : int = 25 ,
depth : int = 3 ,
device : Optional [ torch . device ] = None ,
dtypes : Optional [ List [ torch . dtype ]] = None ,
mode : str = "same" ,
row_settings : Optional [ Iterable [ str ]] = None ,
verbose : int = 1 ,
** kwargs : Any ,
) -> ModelStatistics :
"""
Summarize the given PyTorch model. Summarized information includes:
1) Layer names,
2) input/output shapes,
3) kernel shape,
4) # of parameters,
5) # of operations (Mult-Adds),
6) whether layer is trainable
NOTE: If neither input_data or input_size are provided, no forward pass through the
network is performed, and the provided model information is limited to layer names.
Args:
model (nn.Module):
PyTorch model to summarize. The model should be fully in either train()
or eval() mode. If layers are not all in the same mode, running summary
may have side effects on batchnorm or dropout statistics. If you
encounter an issue with this, please open a GitHub issue.
input_size (Sequence of Sizes):
Shape of input data as a List/Tuple/torch.Size
(dtypes must match model input, default is FloatTensors).
You should include batch size in the tuple.
Default: None
input_data (Sequence of Tensors):
Arguments for the model's forward pass (dtypes inferred).
If the forward() function takes several parameters, pass in a list of
args or a dict of kwargs (if your forward() function takes in a dict
as its only argument, wrap it in a list).
Default: None
batch_dim (int):
Batch_dimension of input data. If batch_dim is None, assume
input_data / input_size contains the batch dimension, which is used
in all calculations. Else, expand all tensors to contain the batch_dim.
Specifying batch_dim can be an runtime optimization, since if batch_dim
is specified, torchinfo uses a batch size of 1 for the forward pass.
Default: None
cache_forward_pass (bool):
If True, cache the run of the forward() function using the model
class name as the key. If the forward pass is an expensive operation,
this can make it easier to modify the formatting of your model
summary, e.g. changing the depth or enabled column types, especially
in Jupyter Notebooks.
WARNING: Modifying the model architecture or input data/input size when
this feature is enabled does not invalidate the cache or re-run the
forward pass, and can cause incorrect summaries as a result.
Default: False
col_names (Iterable[str]):
Specify which columns to show in the output. Currently supported: (
"input_size",
"output_size",
"num_params",
"params_percent",
"kernel_size",
"groups",
"mult_adds",
"trainable",
)
Default: ("output_size", "num_params")
If input_data / input_size are not provided, only "num_params" is used.
col_width (int):
Width of each column.
Default: 25
depth (int):
Depth of nested layers to display (e.g. Sequentials).
Nested layers below this depth will not be displayed in the summary.
Default: 3
device (torch.Device):
Uses this torch device for model and input_data.
If not specified, uses the dtype of input_data if given, or the
parameters of the model. Otherwise, uses the result of
torch.cuda.is_available().
Default: None
dtypes (List[torch.dtype]):
If you use input_size, torchinfo assumes your input uses FloatTensors.
If your model use a different data type, specify that dtype.
For multiple inputs, specify the size of both inputs, and
also specify the types of each parameter here.
Default: None
mode (str)
Either "train", "eval" or "same", which determines whether we call
model.train() or model.eval() before calling summary(). In any case,
original model mode is restored at the end.
Default: "same".
row_settings (Iterable[str]):
Specify which features to show in a row. Currently supported: (
"ascii_only",
"depth",
"var_names",
)
Default: ("depth",)
verbose (int):
0 (quiet): No output
1 (default): Print model summary
2 (verbose): Show weight and bias layers in full detail
Default: 1
If using a Juypter Notebook or Google Colab, the default is 0.
**kwargs:
Other arguments used in `model.forward` function. Passing *args is no
longer supported.
Return:
ModelStatistics object
See torchinfo/model_statistics.py for more information.
""" from torchinfo import summary
model_stats = summary ( your_model , ( 1 , 3 , 28 , 28 ), verbose = 0 )
summary_str = str ( model_stats )
# summary_str contains the string representation of the summary! class LSTMNet ( nn . Module ):
def __init__ ( self , vocab_size = 20 , embed_dim = 300 , hidden_dim = 512 , num_layers = 2 ):
super (). __init__ ()
self . hidden_dim = hidden_dim
self . embedding = nn . Embedding ( vocab_size , embed_dim )
self . encoder = nn . LSTM ( embed_dim , hidden_dim , num_layers = num_layers , batch_first = True )
self . decoder = nn . Linear ( hidden_dim , vocab_size )
def forward ( self , x ):
embed = self . embedding ( x )
out , hidden = self . encoder ( embed )
out = self . decoder ( out )
out = out . view ( - 1 , out . size ( 2 ))
return out , hidden
summary (
LSTMNet (),
( 1 , 100 ),
dtypes = [ torch . long ],
verbose = 2 ,
col_width = 16 ,
col_names = [ "kernel_size" , "output_size" , "num_params" , "mult_adds" ],
row_settings = [ "var_names" ],
) ========================================================================================================================
Layer (type (var_name)) Kernel Shape Output Shape Param # Mult-Adds
========================================================================================================================
LSTMNet (LSTMNet) -- [100, 20] -- --
├─Embedding (embedding) -- [1, 100, 300] 6,000 6,000
│ └─weight [300, 20] └─6,000
├─LSTM (encoder) -- [1, 100, 512] 3,768,320 376,832,000
│ └─weight_ih_l0 [2048, 300] ├─614,400
│ └─weight_hh_l0 [2048, 512] ├─1,048,576
│ └─bias_ih_l0 [2048] ├─2,048
│ └─bias_hh_l0 [2048] ├─2,048
│ └─weight_ih_l1 [2048, 512] ├─1,048,576
│ └─weight_hh_l1 [2048, 512] ├─1,048,576
│ └─bias_ih_l1 [2048] ├─2,048
│ └─bias_hh_l1 [2048] └─2,048
├─Linear (decoder) -- [1, 100, 20] 10,260 10,260
│ └─weight [512, 20] ├─10,240
│ └─bias [20] └─20
========================================================================================================================
Total params: 3,784,580
Trainable params: 3,784,580
Non-trainable params: 0
Total mult-adds (M): 376.85
========================================================================================================================
Input size (MB): 0.00
Forward/backward pass size (MB): 0.67
Params size (MB): 15.14
Estimated Total Size (MB): 15.80
========================================================================================================================
import torchvision
model = torchvision . models . resnet152 ()
summary ( model , ( 1 , 3 , 224 , 224 ), depth = 3 ) ==========================================================================================
Layer (type:depth-idx) Output Shape Param #
==========================================================================================
ResNet [1, 1000] --
├─Conv2d: 1-1 [1, 64, 112, 112] 9,408
├─BatchNorm2d: 1-2 [1, 64, 112, 112] 128
├─ReLU: 1-3 [1, 64, 112, 112] --
├─MaxPool2d: 1-4 [1, 64, 56, 56] --
├─Sequential: 1-5 [1, 256, 56, 56] --
│ └─Bottleneck: 2-1 [1, 256, 56, 56] --
│ │ └─Conv2d: 3-1 [1, 64, 56, 56] 4,096
│ │ └─BatchNorm2d: 3-2 [1, 64, 56, 56] 128
│ │ └─ReLU: 3-3 [1, 64, 56, 56] --
│ │ └─Conv2d: 3-4 [1, 64, 56, 56] 36,864
│ │ └─BatchNorm2d: 3-5 [1, 64, 56, 56] 128
│ │ └─ReLU: 3-6 [1, 64, 56, 56] --
│ │ └─Conv2d: 3-7 [1, 256, 56, 56] 16,384
│ │ └─BatchNorm2d: 3-8 [1, 256, 56, 56] 512
│ │ └─Sequential: 3-9 [1, 256, 56, 56] 16,896
│ │ └─ReLU: 3-10 [1, 256, 56, 56] --
│ └─Bottleneck: 2-2 [1, 256, 56, 56] --
...
...
...
├─AdaptiveAvgPool2d: 1-9 [1, 2048, 1, 1] --
├─Linear: 1-10 [1, 1000] 2,049,000
==========================================================================================
Total params: 60,192,808
Trainable params: 60,192,808
Non-trainable params: 0
Total mult-adds (G): 11.51
==========================================================================================
Input size (MB): 0.60
Forward/backward pass size (MB): 360.87
Params size (MB): 240.77
Estimated Total Size (MB): 602.25
==========================================================================================
class MultipleInputNetDifferentDtypes ( nn . Module ):
def __init__ ( self ):
super (). __init__ ()
self . fc1a = nn . Linear ( 300 , 50 )
self . fc1b = nn . Linear ( 50 , 10 )
self . fc2a = nn . Linear ( 300 , 50 )
self . fc2b = nn . Linear ( 50 , 10 )
def forward ( self , x1 , x2 ):
x1 = F . relu ( self . fc1a ( x1 ))
x1 = self . fc1b ( x1 )
x2 = x2 . type ( torch . float )
x2 = F . relu ( self . fc2a ( x2 ))
x2 = self . fc2b ( x2 )
x = torch . cat (( x1 , x2 ), 0 )
return F . log_softmax ( x , dim = 1 )
summary ( model , [( 1 , 300 ), ( 1 , 300 )], dtypes = [ torch . float , torch . long ])另外，您也可以传递Input_Data本身，Torchinfo将自动推断数据类型。
input_data = torch . randn ( 1 , 300 )
other_input_data = torch . randn ( 1 , 300 ). long ()
model = MultipleInputNetDifferentDtypes ()
summary ( model , input_data = [ input_data , other_input_data , ...]) class ContainerModule ( nn . Module ):
def __init__ ( self ):
super (). __init__ ()
self . _layers = nn . ModuleList ()
self . _layers . append ( nn . Linear ( 5 , 5 ))
self . _layers . append ( ContainerChildModule ())
self . _layers . append ( nn . Linear ( 5 , 5 ))
def forward ( self , x ):
for layer in self . _layers :
x = layer ( x )
return x
class ContainerChildModule ( nn . Module ):
def __init__ ( self ):
super (). __init__ ()
self . _sequential = nn . Sequential ( nn . Linear ( 5 , 5 ), nn . Linear ( 5 , 5 ))
self . _between = nn . Linear ( 5 , 5 )
def forward ( self , x ):
out = self . _sequential ( x )
out = self . _between ( out )
for l in self . _sequential :
out = l ( out )
out = self . _sequential ( x )
for l in self . _sequential :
out = l ( out )
return out
summary ( ContainerModule (), ( 1 , 5 )) ==========================================================================================
Layer (type:depth-idx) Output Shape Param #
==========================================================================================
ContainerModule [1, 5] --
├─ModuleList: 1-1 -- --
│ └─Linear: 2-1 [1, 5] 30
│ └─ContainerChildModule: 2-2 [1, 5] --
│ │ └─Sequential: 3-1 [1, 5] --
│ │ │ └─Linear: 4-1 [1, 5] 30
│ │ │ └─Linear: 4-2 [1, 5] 30
│ │ └─Linear: 3-2 [1, 5] 30
│ │ └─Sequential: 3-3 -- (recursive)
│ │ │ └─Linear: 4-3 [1, 5] (recursive)
│ │ │ └─Linear: 4-4 [1, 5] (recursive)
│ │ └─Sequential: 3-4 [1, 5] (recursive)
│ │ │ └─Linear: 4-5 [1, 5] (recursive)
│ │ │ └─Linear: 4-6 [1, 5] (recursive)
│ │ │ └─Linear: 4-7 [1, 5] (recursive)
│ │ │ └─Linear: 4-8 [1, 5] (recursive)
│ └─Linear: 2-3 [1, 5] 30
==========================================================================================
Total params: 150
Trainable params: 150
Non-trainable params: 0
Total mult-adds (M): 0.00
==========================================================================================
Input size (MB): 0.00
Forward/backward pass size (MB): 0.00
Params size (MB): 0.00
Estimated Total Size (MB): 0.00
==========================================================================================
所有问题和拉的请求都非常感谢！如果您想知道如何构建项目：
pip install -r requirements-dev.txt 。我们使用所有开发软件包的最新版本。pre-commit install 。pre-commit run -a 。pytest 。pytest --overwrite 。pytest --no-output
