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[Feature] Add AttentionContext #730

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[Feature] Add AttentionContext #730

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@HIT-cwh HIT-cwh commented May 29, 2024

Usage

from xtuner.utils import AttentionContext

seqlen_list = [1, 3]
AttentionContext.update(seqlen_list)
print(AttentionContext.get_cumulative_len())  # [0, 1, 4]
print(AttentionContext.get_max_seqlen())  # 3
AttentionContext.clear()
print(AttentionContext.get_cumulative_len() is None)  # True
print(AttentionContext.get_max_seqlen() is None)  # True

@HIT-cwh HIT-cwh requested a review from pppppM May 30, 2024 02:10
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