You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.4 KiB
43 lines
1.4 KiB
from .cosine_lr import CosineLRScheduler
|
|
from .tanh_lr import TanhLRScheduler
|
|
from .step_lr import StepLRScheduler
|
|
|
|
|
|
def create_scheduler(args, optimizer):
|
|
num_epochs = args.epochs
|
|
#FIXME expose cycle parms of the scheduler config to arguments
|
|
if args.sched == 'cosine':
|
|
lr_scheduler = CosineLRScheduler(
|
|
optimizer,
|
|
t_initial=num_epochs,
|
|
t_mul=1.0,
|
|
lr_min=args.min_lr,
|
|
decay_rate=args.decay_rate,
|
|
warmup_lr_init=args.warmup_lr,
|
|
warmup_t=args.warmup_epochs,
|
|
cycle_limit=1,
|
|
t_in_epochs=True,
|
|
)
|
|
num_epochs = lr_scheduler.get_cycle_length() + args.cooldown_epochs
|
|
elif args.sched == 'tanh':
|
|
lr_scheduler = TanhLRScheduler(
|
|
optimizer,
|
|
t_initial=num_epochs,
|
|
t_mul=1.0,
|
|
lr_min=args.min_lr,
|
|
warmup_lr_init=args.warmup_lr,
|
|
warmup_t=args.warmup_epochs,
|
|
cycle_limit=1,
|
|
t_in_epochs=True,
|
|
)
|
|
num_epochs = lr_scheduler.get_cycle_length() + args.cooldown_epochs
|
|
else:
|
|
lr_scheduler = StepLRScheduler(
|
|
optimizer,
|
|
decay_t=args.decay_epochs,
|
|
decay_rate=args.decay_rate,
|
|
warmup_lr_init=args.warmup_lr,
|
|
warmup_t=args.warmup_epochs,
|
|
)
|
|
return lr_scheduler, num_epochs
|