| import os
|
| import torch
|
| import torch.distributed as dist
|
|
|
| class ProcessGroupManager:
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| def __init__(self, dp_size, pp_size, tp_size):
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| self.global_rank = dist.get_rank()
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| self.world_size = dist.get_world_size()
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| self.local_rank = int(os.environ.get("LOCAL_RANK", self.global_rank % self.world_size))
|
|
|
| assert self.world_size == dp_size * pp_size * tp_size, f"World size ({self.world_size}) != DP ({self.dp_size}) * PP ({self.pp_size}) * TP ({self.tp_size})"
|
|
|
| self.grid = torch.arange(self.world_size).view(dp_size, pp_size, tp_size)
|
|
|
| self.dp_rank, self.pp_rank, self.tp_rank = (self.grid == self.global_rank).nonzero().flatten().tolist()
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|
|
|
|
| self.tp_group = dist.new_subgroups_by_enumeration([self.grid[d, p, :].tolist() for d in range(dp_size) for p in range(pp_size)])[0]
|
| self.pp_group = dist.new_subgroups_by_enumeration([self.grid[d, :, t].tolist() for d in range(dp_size) for t in range(tp_size)])[0]
|
| self.dp_group = dist.new_subgroups_by_enumeration([self.grid[:, p, t].tolist() for p in range(pp_size) for t in range(tp_size)])[0]
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| self.pp_dp_group = dist.new_subgroups_by_enumeration([self.grid[:, :, t].flatten().tolist() for t in range(tp_size)])[0]
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|
|
| self.world_group = dist.group.WORLD
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|
|
|
|
| self.tp_group_ids = self.grid[self.dp_rank, self.pp_rank, :].tolist()
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| self.pp_group_ids = self.grid[self.dp_rank, :, self.tp_rank].tolist()
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| self.dp_group_ids = self.grid[:, self.pp_rank, self.tp_rank].tolist()
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|
|
|
|
| self.tp_world_size = dist.get_world_size(group=self.tp_group)
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| self.tp_first_rank = self.tp_group_ids[0]
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| self.tp_last_rank = self.tp_group_ids[-1]
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|
|
|
|
| self.pp_world_size = dist.get_world_size(group=self.pp_group)
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| self.pp_first_rank = self.pp_group_ids[0]
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| self.pp_last_rank = self.pp_group_ids[-1]
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| self.pp_is_first_stage = self.pp_rank == 0
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| self.pp_is_last_stage = self.pp_rank == self.pp_world_size - 1
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| self.pp_next_rank = None if self.pp_rank == self.pp_world_size - 1 else int(self.grid[self.dp_rank, self.pp_rank + 1, self.tp_rank].item())
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| self.pp_prev_rank = None if self.pp_rank == 0 else int(self.grid[self.dp_rank, self.pp_rank - 1, self.tp_rank].item())
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|
|
|
|
| self.dp_world_size = dist.get_world_size(group=self.dp_group)
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| self.dp_first_rank = self.dp_group_ids[0]
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| self.dp_last_rank = self.dp_group_ids[-1]
|
|
|
| def __str__(self):
|
| return f"DP({self.dp_world_size})-PP({self.pp_world_size})-TP({self.tp_world_size})-Rank({self.global_rank})"
|
|
|
| def setup_process_group_manager(dp_size, pp_size, tp_size):
|
| global process_group_manager
|
| process_group_manager = ProcessGroupManager(dp_size, pp_size, tp_size) |
