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29 lines
1.3 KiB
29 lines
1.3 KiB
1 year ago
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from colossalai.cluster import ProcessGroupMesh
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class MoeParallelInfo:
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"""Moe parallelism information, storing parallel sizes and groups."""
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def __init__(self, ep_inside: bool, ep_size: int, dp_size: int, pp_size: int = 1):
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"""
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init MoeParallelInfo with ep_size, dp_size and pp_size
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Args:
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ep_size (int): expert parallel size
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dp_size (int): data parallel (zero) size
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pp_size (int, optional): pipeline parallel size. Defaults to 1.
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ep_inside (bool, optional): Use ep inside dp if True, dp inside ep if Fasle. Defaults to True.
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"""
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self.pp_size, self.dp_size, self.ep_size = pp_size, dp_size, ep_size
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if ep_inside:
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self.pp_axis, self.dp_axis, self.ep_axis = 0, 1, 2
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self.pg = ProcessGroupMesh(self.pp_size, self.dp_size, self.ep_size)
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else:
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self.pp_axis, self.ep_axis, self.dp_axis = 0, 1, 2
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self.pg = ProcessGroupMesh(self.pp_size, self.ep_size, self.dp_size)
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self.ep_group = self.pg.get_group_along_axis(self.ep_axis)
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self.ep_group_ranks = self.pg.get_ranks_in_group(self.ep_group)
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self.dp_group = self.pg.get_group_along_axis(self.dp_axis)
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self.dp_group_ranks = self.pg.get_ranks_in_group(self.dp_group)
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