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from bitsandbytes.optim.optimizer import Optimizer1State |
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class Adagrad(Optimizer1State): |
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def __init__( |
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self, |
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params, |
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lr=1e-2, |
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lr_decay=0, |
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weight_decay=0, |
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initial_accumulator_value=0, |
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eps=1e-10, |
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optim_bits=32, |
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args=None, |
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min_8bit_size=4096, |
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percentile_clipping=100, |
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block_wise=True, |
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): |
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""" |
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Base Adagrad optimizer. |
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Arguments: |
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params (`torch.tensor`): |
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The input parameters to optimize. |
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lr (`float`, defaults to 1e-2): |
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The learning rate. |
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lr_decay (`int`, defaults to 0): |
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The learning rate decay. |
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weight_decay (`float`, defaults to 0.0): |
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The weight decay value for the optimizer. |
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initial_accumulator_value (`int`, defaults to 0): |
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The initial momemtum values. |
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eps (`float`, defaults to 1e-10): |
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The epsilon value prevents division by zero in the optimizer. |
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optim_bits (`int`, defaults to 32): |
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The number of bits of the optimizer state. |
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args (`object`, defaults to `None`): |
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An object with additional arguments. |
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min_8bit_size (`int`, defaults to 4096): |
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The minimum number of elements of the parameter tensors for 8-bit optimization. |
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percentile_clipping (`int`, defaults to 100): |
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Adapts clipping threshold automatically by tracking the last 100 gradient norms and clipping the gradient at a certain percentile to improve stability. |
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block_wise (`bool`, defaults to `True`): |
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Whether to independently quantize each block of tensors to reduce outlier effects and improve stability. |
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""" |
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if not 0.0 <= lr: |
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raise ValueError(f"Invalid learning rate: {lr}") |
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if not 0.0 <= weight_decay: |
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raise ValueError(f"Invalid weight_decay value: {weight_decay}") |
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if not 0.0 <= eps: |
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raise ValueError(f"Invalid epsilon value: {eps}") |
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if initial_accumulator_value != 0.0: |
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raise ValueError("Initial accumulator value != 0.0 not supported!") |
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if lr_decay != 0.0: |
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raise ValueError("Lr Decay != 0.0 not supported!") |
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super().__init__( |
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"adagrad", |
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params, |
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lr, |
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(0.0, 0.0), |
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eps, |
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weight_decay, |
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optim_bits, |
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args, |
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min_8bit_size, |
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percentile_clipping, |
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block_wise, |
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) |
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class Adagrad8bit(Optimizer1State): |
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def __init__( |
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self, |
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params, |
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lr=1e-2, |
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lr_decay=0, |
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weight_decay=0, |
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initial_accumulator_value=0, |
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eps=1e-10, |
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optim_bits=8, |
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args=None, |
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min_8bit_size=4096, |
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percentile_clipping=100, |
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block_wise=True, |
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): |
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""" |
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8-bit Adagrad optimizer. |
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Arguments: |
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params (`torch.tensor`): |
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The input parameters to optimize. |
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lr (`float`, defaults to 1e-2): |
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The learning rate. |
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lr_decay (`int`, defaults to 0): |
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The learning rate decay. |
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weight_decay (`float`, defaults to 0.0): |
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The weight decay value for the optimizer. |
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initial_accumulator_value (`int`, defaults to 0): |
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The initial momemtum values. |
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eps (`float`, defaults to 1e-10): |
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The epsilon value prevents division by zero in the optimizer. |
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optim_bits (`int`, defaults to 8): |
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The number of bits of the optimizer state. |
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args (`object`, defaults to `None`): |
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An object with additional arguments. |
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min_8bit_size (`int`, defaults to 4096): |
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The minimum number of elements of the parameter tensors for 8-bit optimization. |
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percentile_clipping (`int`, defaults to 100): |
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Adapts clipping threshold automatically by tracking the last 100 gradient norms and clipping the gradient at a certain percentile to improve stability. |
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block_wise (`bool`, defaults to `True`): |
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Whether to independently quantize each block of tensors to reduce outlier effects and improve stability. |
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""" |
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if not 0.0 <= lr: |
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raise ValueError(f"Invalid learning rate: {lr}") |
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if not 0.0 <= weight_decay: |
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raise ValueError(f"Invalid weight_decay value: {weight_decay}") |
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if not 0.0 <= eps: |
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raise ValueError(f"Invalid epsilon value: {eps}") |
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if initial_accumulator_value != 0.0: |
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raise ValueError("Initial accumulator value != 0.0 not supported!") |
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if lr_decay != 0.0: |
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raise ValueError("Lr Decay != 0.0 not supported!") |
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assert block_wise |
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super().__init__( |
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"adagrad", |
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params, |
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lr, |
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(0.0, 0.0), |
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eps, |
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weight_decay, |
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8, |
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args, |
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min_8bit_size, |
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percentile_clipping, |
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block_wise, |
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) |
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class Adagrad32bit(Optimizer1State): |
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def __init__( |
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self, |
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params, |
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lr=1e-2, |
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lr_decay=0, |
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weight_decay=0, |
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initial_accumulator_value=0, |
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eps=1e-10, |
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optim_bits=32, |
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args=None, |
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min_8bit_size=4096, |
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percentile_clipping=100, |
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block_wise=True, |
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): |
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""" |
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32-bit Adagrad optimizer. |
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Arguments: |
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params (`torch.tensor`): |
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The input parameters to optimize. |
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|
lr (`float`, defaults to 1e-2): |
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|
The learning rate. |
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lr_decay (`int`, defaults to 0): |
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The learning rate decay. |
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weight_decay (`float`, defaults to 0.0): |
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The weight decay value for the optimizer. |
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initial_accumulator_value (`int`, defaults to 0): |
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The initial momemtum values. |
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eps (`float`, defaults to 1e-10): |
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The epsilon value prevents division by zero in the optimizer. |
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optim_bits (`int`, defaults to 32): |
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The number of bits of the optimizer state. |
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args (`object`, defaults to `None`): |
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|
An object with additional arguments. |
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min_8bit_size (`int`, defaults to 4096): |
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The minimum number of elements of the parameter tensors for 8-bit optimization. |
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percentile_clipping (`int`, defaults to 100): |
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|
Adapts clipping threshold automatically by tracking the last 100 gradient norms and clipping the gradient at a certain percentile to improve stability. |
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block_wise (`bool`, defaults to `True`): |
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Whether to independently quantize each block of tensors to reduce outlier effects and improve stability. |
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""" |
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if not 0.0 <= lr: |
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raise ValueError(f"Invalid learning rate: {lr}") |
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if not 0.0 <= weight_decay: |
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raise ValueError(f"Invalid weight_decay value: {weight_decay}") |
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if not 0.0 <= eps: |
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raise ValueError(f"Invalid epsilon value: {eps}") |
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if initial_accumulator_value != 0.0: |
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raise ValueError("Initial accumulator value != 0.0 not supported!") |
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if lr_decay != 0.0: |
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raise ValueError("Lr Decay != 0.0 not supported!") |
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super().__init__( |
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"adagrad", |
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params, |
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lr, |
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(0.0, 0.0), |
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eps, |
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weight_decay, |
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32, |
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args, |
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min_8bit_size, |
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percentile_clipping, |
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block_wise, |
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) |
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