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feat(add layernorm op): layernorm operator added
添加layernorm 算子
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import torch.onnx | ||
import torch | ||
import onnx | ||
import onnxsim | ||
import torch.nn as nn | ||
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class Model(torch.nn.Module): | ||
def __init__(self): | ||
super().__init__() | ||
self.conv1 = nn.Conv2d(in_channels=3, out_channels=3, kernel_size=3, padding=1) | ||
self.norm = nn.LayerNorm(3) | ||
self.act = nn.ReLU() | ||
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def forward(self, x): | ||
_, _, H, W = x.shape | ||
L = H * W | ||
x = self.conv1(x) | ||
x = x.view(x.shape[0], x.shape[1], L).permute(0, 2, 1) | ||
x = self.norm(x) | ||
x = self.act(x) | ||
return x | ||
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def export_onnx_graph(): | ||
input = torch.Tensor(1, 3, 5, 5).uniform_(-1, 1) | ||
model = Model() | ||
model.eval() | ||
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file = "./sample-ln-before.onnx" | ||
torch.onnx.export( | ||
model = model, | ||
args = (input,), | ||
f = file, | ||
input_names = ["input0"], | ||
output_names = ["output0"], | ||
opset_version = 12) | ||
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print("\nFinished export {}".format(file)) | ||
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model_onnx = onnx.load(file) | ||
onnx.checker.check_model(model_onnx) | ||
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print(f"Simplifying with onnx-simplifier {onnxsim.__version__}...") | ||
model_onnx, check = onnxsim.simplify(model_onnx) | ||
assert check, "assert check failed" | ||
onnx.save(model_onnx, file) | ||
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export_onnx_graph() |
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import onnx_graphsurgeon as gs | ||
import numpy as np | ||
import onnx | ||
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# Register functions to make graph generation easier | ||
@gs.Graph.register() | ||
def min(self, *args): | ||
return self.layer(op="Min", inputs=args, outputs=["min_out"])[0] | ||
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@gs.Graph.register() | ||
def max(self, *args): | ||
return self.layer(op="Max", inputs=args, outputs=["max_out"])[0] | ||
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@gs.Graph.register() | ||
def identity(self, inp): | ||
return self.layer(op="Identity", inputs=[inp], outputs=["identity_out"])[0] | ||
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# Generate the graph | ||
graph = gs.Graph() | ||
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graph.inputs = [gs.Variable("input", shape=(4, 4), dtype=np.float32)] | ||
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# Clip values to [0, 6] | ||
MIN_VAL = np.array(0, np.float32) | ||
MAX_VAL = np.array(6, np.float32) | ||
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# Add identity nodes to make the graph structure a bit more interesting | ||
inp = graph.identity(graph.inputs[0]) | ||
max_out = graph.max(graph.min(inp, MAX_VAL), MIN_VAL) | ||
graph.outputs = [graph.identity(max_out), ] | ||
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# Graph outputs must include dtype information | ||
graph.outputs[0].to_variable(dtype=np.float32, shape=(4, 4)) | ||
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onnx.save(gs.export_onnx(graph), "model.onnx") |
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