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Fix ONNX dynamic axes export support with onnx simplifier, make onnx simplifier optional #2856

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merged 3 commits into from
Apr 20, 2021
Merged

Fix ONNX dynamic axes export support with onnx simplifier, make onnx simplifier optional #2856

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2ce38a0
Ensure dynamic export works succesfully, onnx simplifier optional
Apr 18, 2021
ff03e37
Update export.py
glenn-jocher Apr 20, 2021
1190aa0
add dashes
glenn-jocher Apr 20, 2021
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25 changes: 15 additions & 10 deletions models/export.py
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
parser.add_argument('--dynamic', action='store_true', help='dynamic ONNX axes')
parser.add_argument('--grid', action='store_true', help='export Detect() layer grid')
parser.add_argument('--device', default='cpu', help='cuda device, i.e. 0 or 0,1,2,3 or cpu')
parser.add_argument('--onnx-simplify', action='store_true', help='simplify the exported onnx model using onnxsim')
opt = parser.parse_args()
opt.img_size *= 2 if len(opt.img_size) == 1 else 1 # expand
print(opt)
Expand Down Expand Up @@ -87,16 +88,20 @@
# print(onnx.helper.printable_graph(model_onnx.graph)) # print

# Simplify
try:
check_requirements(['onnx-simplifier'])
import onnxsim

print(f'{prefix} simplifying with onnx-simplifier {onnxsim.__version__}...')
model_onnx, check = onnxsim.simplify(model_onnx)
assert check, 'assert check failed'
onnx.save(model_onnx, f)
except Exception as e:
print(f'{prefix} simplifier failure: {e}')
if opt.onnx_simplify:
try:
check_requirements(['onnx-simplifier'])
import onnxsim

print(f'{prefix} simplifying with onnx-simplifier {onnxsim.__version__}...')
model_onnx, check = onnxsim.simplify(
model_onnx,
dynamic_input_shape=opt.dynamic,
input_shapes={'images': list(img.shape)} if opt.dynamic else None)
assert check, 'assert check failed'
onnx.save(model_onnx, f)
except Exception as e:
print(f'{prefix} simplifier failure: {e}')
print(f'{prefix} export success, saved as {f}')
except Exception as e:
print(f'{prefix} export failure: {e}')
Expand Down