v0.10.1rc1

vllm_ascend/distributed/parallel_state.py

@@ -0,0 +1,119 @@
+from typing import Optional
+
+import torch
+from vllm.config import ParallelConfig
+from vllm.distributed.parallel_state import (GroupCoordinator, get_world_group,
+                                             init_model_parallel_group)
+
+import vllm_ascend.envs as envs_ascend
+from vllm_ascend.ascend_config import get_ascend_config
+
+# Currently, mc2 op need their own group coordinator.
+_MC2: Optional[GroupCoordinator] = None
+_MLP_TP: Optional[GroupCoordinator] = None
+
+_LMTP: Optional[GroupCoordinator] = None
+
+
+def get_mc2_group() -> GroupCoordinator:
+    assert _MC2 is not None, ("mc2 group is not initialized")
+    return _MC2
+
+
+def get_lmhead_tp_group() -> GroupCoordinator:
+    assert _LMTP is not None, (
+        "lm head tensor parallel group is not initialized")
+    return _LMTP
+
+
+def get_mlp_tp_group() -> GroupCoordinator:
+    assert _MLP_TP is not None, ("mlp group is not initialized")
+    return _MLP_TP
+
+
+def model_parallel_initialized():
+    return (_MC2 is not None)
+
+
+def init_ascend_model_parallel(parallel_config: ParallelConfig, ):
+    if model_parallel_initialized():
+        return
+    assert torch.distributed.is_initialized()
+    world_size = torch.distributed.get_world_size()
+    backend = torch.distributed.get_backend(get_world_group().device_group)
+
+    # The layout of all ranks: ExternalDP * EP
+    # ExternalDP is the data parallel group that is not part of the model,
+    # every dp rank can generate independently (in verl integration).
+    all_ranks = torch.arange(world_size).reshape(
+        -1, parallel_config.data_parallel_size *
+        parallel_config.tensor_parallel_size)
+    global _MC2
+    group_ranks = all_ranks.unbind(0)
+    group_ranks = [x.tolist() for x in group_ranks]
+
+    _MC2 = init_model_parallel_group(group_ranks,
+                                     get_world_group().local_rank,
+                                     backend,
+                                     group_name="mc2")
+    if envs_ascend.VLLM_ASCEND_ENABLE_MLP_OPTIMIZE:
+        global _MLP_TP
+        assert _MLP_TP is None, (
+            "mlp tensor model parallel group is already initialized")
+
+        mlp_tp = parallel_config.data_parallel_size
+
+        all_ranks_mlp_head = torch.arange(world_size).reshape(
+            -1, mlp_tp, parallel_config.pipeline_parallel_size, 1)  # noqa
+        group_ranks = all_ranks_mlp_head.view(-1, mlp_tp).unbind(0)
+        group_ranks = [x.tolist() for x in group_ranks]
+
+        # message queue broadcaster is only used in tensor model parallel group
+        _MLP_TP = init_model_parallel_group(group_ranks,
+                                            get_world_group().local_rank,
+                                            backend,
+                                            group_name="mlp_tp")
+
+    lmhead_tensor_parallel_size = get_ascend_config(
+    ).lmhead_tensor_parallel_size
+    if lmhead_tensor_parallel_size is not None:
+        group_ranks = []
+        global _LMTP
+        num_lmhead_tensor_parallel_groups: int = (world_size //
+                                                  lmhead_tensor_parallel_size)
+        for i in range(num_lmhead_tensor_parallel_groups):
+            ranks = list(
+                range(i * lmhead_tensor_parallel_size,
+                      (i + 1) * lmhead_tensor_parallel_size))
+            group_ranks.append(ranks)
+        _LMTP = init_model_parallel_group(group_ranks,
+                                          get_world_group().local_rank,
+                                          backend,
+                                          group_name="lmheadtp")
+
+
+def get_mlp_tensor_model_parallel_world_size():
+    """Return world size for the tensor model parallel group."""
+    return get_mlp_tp_group().world_size
+
+
+def get_mlp_tensor_model_parallel_rank():
+    """Return world size for the tensor model parallel group."""
+    return get_mlp_tp_group().rank_in_group
+
+
+def destroy_ascend_model_parallel():
+    global _MC2
+    if _MC2:
+        _MC2.destroy()
+    _MC2 = None
+
+    global _MLP_TP
+    if _MLP_TP:
+        _MLP_TP.destroy()
+    _MLP_TP = None
+
+    global _LMTP
+    if _LMTP:
+        _LMTP.destroy()
+    _LMTP = None