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remove .item which causes sync issues (Lightning-AI#1254)
* remove .item which causes sync issues * fixed gradient acc sched * fixed gradient acc sched
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Original file line number | Diff line number | Diff line change |
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import torch | ||
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class TensorRunningMean(object): | ||
""" | ||
Tracks a running mean without graph references. | ||
Round robbin for the mean | ||
""" | ||
def __init__(self, window_length): | ||
self.window_length = window_length | ||
self.reset() | ||
self.last_idx = 0 | ||
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def reset(self): | ||
self.memory = torch.Tensor(self.window_length) | ||
self.current_idx = 0 | ||
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def last(self): | ||
return self.memory[self.last_idx] | ||
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def append(self, x): | ||
# map proper type for memory if they don't match | ||
if self.memory.type() != x.type(): | ||
self.memory.type_as(x) | ||
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# store without grads | ||
with torch.no_grad(): | ||
self.memory[self.current_idx] = x | ||
self.last_idx = self.current_idx | ||
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# increase index | ||
self.current_idx += 1 | ||
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# reset index when hit limit of tensor | ||
if self.current_idx >= self.window_length: | ||
self.current_idx = 0 | ||
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def mean(self): | ||
return self.memory.mean() |
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