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24 lines
796 B
24 lines
796 B
4 years ago
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import torch
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from timm.utils.agc import adaptive_clip_grad
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def dispatch_clip_grad(parameters, value: float, mode: str = 'norm', norm_type: float = 2.0):
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""" Dispatch to gradient clipping method
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Args:
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parameters (Iterable): model parameters to clip
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value (float): clipping value/factor/norm, mode dependant
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mode (str): clipping mode, one of 'norm', 'value', 'agc'
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norm_type (float): p-norm, default 2.0
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"""
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if mode == 'norm':
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torch.nn.utils.clip_grad_norm_(parameters, value, norm_type=norm_type)
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elif mode == 'value':
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torch.nn.utils.clip_grad_value_(parameters, value)
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elif mode == 'agc':
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adaptive_clip_grad(parameters, value, norm_type=norm_type)
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else:
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assert False, f"Unknown clip mode ({mode})."
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