packed_memmap# Read-only fixed-sequence token storage shared by every distributed stage. Classes PackedTokenMemmapDataset Map N x (S+1) uint32 tokens to shifted input/target tensors. class PackedTokenMemmapDataset# Bases: Dataset Map N x (S+1) uint32 tokens to shifted input/target tensors. __init__(path, *, limit=None, sequence_length=None)# Parameters: path (str | Path) limit (int | None) sequence_length (int | None)