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# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
"""For backward compatibility, we need the class definitions to deserialize."""
class LossScaler:
def __init__(self, scale=1):
self.cur_scale = scale
class DynamicLossScaler:
def __init__(self,
init_scale=2**32,
scale_factor=2.,
scale_window=1000,
min_scale=1,
delayed_shift=1,
consecutive_hysteresis=False):
self.cur_scale = init_scale
self.cur_iter = 0
self.last_overflow_iter = -1
self.scale_factor = scale_factor
self.scale_window = scale_window
self.min_scale = min_scale
self.delayed_shift = delayed_shift
self.cur_hysteresis = delayed_shift
self.consecutive_hysteresis = consecutive_hysteresis
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