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Multi-layer capable --freeze argument #6019

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merged 4 commits into from
Dec 17, 2021
Merged

Multi-layer capable --freeze argument #6019

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cbdca3f
support specfiy multiple frozen layers
youyuxiansen Dec 17, 2021
ac3f6ef
fix bug
youyuxiansen Dec 17, 2021
efb5c79
Cleanup Freeze section
glenn-jocher Dec 17, 2021
5d561ba
Cleanup argument
glenn-jocher Dec 17, 2021
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4 changes: 2 additions & 2 deletions train.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,7 @@ def train(hyp, # path/to/hyp.yaml or hyp dictionary
model = Model(cfg, ch=3, nc=nc, anchors=hyp.get('anchors')).to(device) # create

# Freeze
freeze = [f'model.{x}.' for x in range(freeze)] # layers to freeze
freeze = [f'model.{x}.' for x in (freeze if isinstance(freeze, list) else range(freeze))] # layers to freeze
for k, v in model.named_parameters():
v.requires_grad = True # train all layers
if any(x in k for x in freeze):
Expand Down Expand Up @@ -469,7 +469,7 @@ def parse_opt(known=False):
parser.add_argument('--linear-lr', action='store_true', help='linear LR')
parser.add_argument('--label-smoothing', type=float, default=0.0, help='Label smoothing epsilon')
parser.add_argument('--patience', type=int, default=100, help='EarlyStopping patience (epochs without improvement)')
parser.add_argument('--freeze', type=int, default=0, help='Number of layers to freeze. backbone=10, all=24')
parser.add_argument('--freeze', nargs='+', type=int, default=0, help='Freeze layers: backbone=10, first3=0 1 2')
parser.add_argument('--save-period', type=int, default=-1, help='Save checkpoint every x epochs (disabled if < 1)')
parser.add_argument('--local_rank', type=int, default=-1, help='DDP parameter, do not modify')

Expand Down