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PyTorch 1.11.0 compatibility updates #6932

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Mar 10, 2022
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PyTorch 1.11.0 compatibility updates #6932

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19 changes: 10 additions & 9 deletions models/experimental.py
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Original file line number Diff line number Diff line change
Expand Up @@ -94,21 +94,22 @@ def attempt_load(weights, map_location=None, inplace=True, fuse=True):
model = Ensemble()
for w in weights if isinstance(weights, list) else [weights]:
ckpt = torch.load(attempt_download(w), map_location=map_location) # load
if fuse:
model.append(ckpt['ema' if ckpt.get('ema') else 'model'].float().fuse().eval()) # FP32 model
else:
model.append(ckpt['ema' if ckpt.get('ema') else 'model'].float().eval()) # without layer fuse
ckpt = (ckpt['ema'] or ckpt['model']).float() # FP32 model
model.append(ckpt.fuse().eval() if fuse else ckpt.eval()) # fused or un-fused model in eval mode

# Compatibility updates
for m in model.modules():
if type(m) in [nn.Hardswish, nn.LeakyReLU, nn.ReLU, nn.ReLU6, nn.SiLU, Detect, Model]:
m.inplace = inplace # pytorch 1.7.0 compatibility
if type(m) is Detect:
t = type(m)
if t in (nn.Hardswish, nn.LeakyReLU, nn.ReLU, nn.ReLU6, nn.SiLU, Detect, Model):
m.inplace = inplace # torch 1.7.0 compatibility
if t is Detect:
if not isinstance(m.anchor_grid, list): # new Detect Layer compatibility
delattr(m, 'anchor_grid')
setattr(m, 'anchor_grid', [torch.zeros(1)] * m.nl)
elif type(m) is Conv:
m._non_persistent_buffers_set = set() # pytorch 1.6.0 compatibility
elif t is nn.Upsample:
m.recompute_scale_factor = None # torch 1.11.0 compatibility
elif t is Conv:
m._non_persistent_buffers_set = set() # torch 1.6.0 compatibility

if len(model) == 1:
return model[-1] # return model
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