33 lines
1.7 KiB
Python
33 lines
1.7 KiB
Python
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# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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from bitsandbytes.optim.optimizer import Optimizer1State
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class SGD(Optimizer1State):
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def __init__(self, params, lr, momentum=0, dampening=0,
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weight_decay=0, nesterov=False, optim_bits=32, args=None,
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min_8bit_size=4096, percentile_clipping=100, block_wise=True):
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if momentum == 0:
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raise NotImplementError(f'SGD without momentum is not supported!')
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super(SGD, self).__init__('momentum', params, lr, (momentum, dampening), 0.0,
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weight_decay, optim_bits, args, min_8bit_size, percentile_clipping, block_wise)
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class SGD8bit(Optimizer1State):
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def __init__(self, params, lr, momentum=0, dampening=0,
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weight_decay=0, nesterov=False, args=None,
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min_8bit_size=4096, percentile_clipping=100, block_wise=True):
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if momentum == 0:
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raise NotImplementError(f'SGD without momentum is not supported!')
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super(SGD8bit, self).__init__('momentum', params, lr, (momentum, dampening), 0.0,
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weight_decay, 8, args, min_8bit_size, percentile_clipping, block_wise)
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class SGD32bit(Optimizer1State):
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def __init__(self, params, lr, momentum=0, dampening=0,
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weight_decay=0, nesterov=False, args=None,
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min_8bit_size=4096, percentile_clipping=100, block_wise=True):
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if momentum == 0:
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raise NotImplementError(f'SGD without momentum is not supported!')
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super(SGD32bit, self).__init__('momentum', params, lr, (momentum, dampening), 0.0,
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weight_decay, 32, args, min_8bit_size, percentile_clipping, block_wise)
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