[core][executor] simplify instance id

vllm/config.py

@@ -27,7 +27,8 @@
     get_hf_text_config, get_pooling_config,
     get_sentence_transformer_tokenizer_config, is_encoder_decoder, uses_mrope)
 from vllm.utils import (GiB_bytes, cuda_device_count_stateless, get_cpu_memory,
-                        print_warning_once, resolve_obj_by_qualname)
+                        print_warning_once, random_uuid,
+                        resolve_obj_by_qualname)
 
 if TYPE_CHECKING:
     from ray.util.placement_group import PlacementGroup
@@ -2408,6 +2409,7 @@ class VllmConfig:
                                                   init=True)  # type: ignore
     kv_transfer_config: KVTransferConfig = field(default=None,
                                                  init=True)  # type: ignore
+    instance_id: str = ""
 
     @staticmethod
     def get_graph_batch_size(batch_size: int) -> int:
@@ -2565,6 +2567,9 @@ def __post_init__(self):
 
         current_platform.check_and_update_config(self)
 
+        if not self.instance_id:
+            self.instance_id = random_uuid()[:5]
+
     def __str__(self):
         return ("model=%r, speculative_config=%r, tokenizer=%r, "
         "skip_tokenizer_init=%s, tokenizer_mode=%s, revision=%s, "

vllm/envs.py

@@ -8,7 +8,6 @@
     VLLM_RPC_BASE_PATH: str = tempfile.gettempdir()
     VLLM_USE_MODELSCOPE: bool = False
     VLLM_RINGBUFFER_WARNING_INTERVAL: int = 60
-    VLLM_INSTANCE_ID: Optional[str] = None
     VLLM_NCCL_SO_PATH: Optional[str] = None
     LD_LIBRARY_PATH: Optional[str] = None
     VLLM_USE_TRITON_FLASH_ATTN: bool = False
@@ -175,11 +174,6 @@ def get_default_config_root():
     "VLLM_USE_MODELSCOPE":
     lambda: os.environ.get("VLLM_USE_MODELSCOPE", "False").lower() == "true",
 
-    # Instance id represents an instance of the VLLM. All processes in the same
-    # instance should have the same instance id.
-    "VLLM_INSTANCE_ID":
-    lambda: os.environ.get("VLLM_INSTANCE_ID", None),
-
     # Interval in seconds to log a warning message when the ring buffer is full
     "VLLM_RINGBUFFER_WARNING_INTERVAL":
     lambda: int(os.environ.get("VLLM_RINGBUFFER_WARNING_INTERVAL", "60")),

vllm/executor/cpu_executor.py

@@ -10,8 +10,7 @@
 from vllm.model_executor.layers.sampler import SamplerOutput
 from vllm.prompt_adapter.request import PromptAdapterRequest
 from vllm.sequence import ExecuteModelRequest
-from vllm.utils import (get_distributed_init_method, get_open_port,
-                        get_vllm_instance_id, make_async)
+from vllm.utils import get_distributed_init_method, get_open_port, make_async
 from vllm.worker.worker_base import WorkerWrapperBase
 
 logger = init_logger(__name__)
@@ -31,9 +30,6 @@ def _init_executor(self) -> None:
         # Environment variables for CPU executor
         #
 
-        # Ensure that VLLM_INSTANCE_ID is set, to be inherited by workers
-        os.environ["VLLM_INSTANCE_ID"] = get_vllm_instance_id()
-
         # Disable torch async compiling which won't work with daemonic processes
         os.environ["TORCHINDUCTOR_COMPILE_THREADS"] = "1"
 

vllm/executor/multiproc_gpu_executor.py

@@ -16,7 +16,7 @@
 from vllm.triton_utils.importing import HAS_TRITON
 from vllm.utils import (_run_task_with_lock, cuda_device_count_stateless,
                         cuda_is_initialized, get_distributed_init_method,
-                        get_open_port, get_vllm_instance_id, make_async,
+                        get_open_port, make_async,
                         update_environment_variables)
 
 if HAS_TRITON:
@@ -37,9 +37,6 @@ def _init_executor(self) -> None:
         world_size = self.parallel_config.world_size
         tensor_parallel_size = self.parallel_config.tensor_parallel_size
 
-        # Ensure that VLLM_INSTANCE_ID is set, to be inherited by workers
-        os.environ["VLLM_INSTANCE_ID"] = get_vllm_instance_id()
-
         # Disable torch async compiling which won't work with daemonic processes
         os.environ["TORCHINDUCTOR_COMPILE_THREADS"] = "1"
 

vllm/executor/ray_gpu_executor.py

@@ -15,8 +15,7 @@
 from vllm.model_executor.layers.sampler import SamplerOutput
 from vllm.sequence import ExecuteModelRequest
 from vllm.utils import (_run_task_with_lock, get_distributed_init_method,
-                        get_ip, get_open_port, get_vllm_instance_id,
-                        make_async)
+                        get_ip, get_open_port, make_async)
 
 if ray is not None:
     from ray.util.scheduling_strategies import PlacementGroupSchedulingStrategy
@@ -220,14 +219,10 @@ def sort_by_driver_then_worker_ip(worker):
                 " environment variable, make sure it is unique for"
                 " each node.")
 
-        VLLM_INSTANCE_ID = get_vllm_instance_id()
-
         # Set environment variables for the driver and workers.
         all_args_to_update_environment_variables = [({
             "CUDA_VISIBLE_DEVICES":
             ",".join(map(str, node_gpus[node_id])),
-            "VLLM_INSTANCE_ID":
-            VLLM_INSTANCE_ID,
             "VLLM_TRACE_FUNCTION":
             str(envs.VLLM_TRACE_FUNCTION),
             **({

vllm/executor/ray_hpu_executor.py

@@ -15,8 +15,7 @@
 from vllm.model_executor.layers.sampler import SamplerOutput
 from vllm.sequence import ExecuteModelRequest
 from vllm.utils import (_run_task_with_lock, get_distributed_init_method,
-                        get_ip, get_open_port, get_vllm_instance_id,
-                        make_async)
+                        get_ip, get_open_port, make_async)
 
 if ray is not None:
     from ray.util.scheduling_strategies import PlacementGroupSchedulingStrategy
@@ -196,12 +195,8 @@ def sort_by_driver_then_worker_ip(worker):
                 "environment variable, make sure it is unique for"
                 " each node.")
 
-        VLLM_INSTANCE_ID = get_vllm_instance_id()
-
         # Set environment variables for the driver and workers.
         all_args_to_update_environment_variables = [({
-            "VLLM_INSTANCE_ID":
-            VLLM_INSTANCE_ID,
             "VLLM_TRACE_FUNCTION":
             str(envs.VLLM_TRACE_FUNCTION),
         }, ) for (node_id, _) in worker_node_and_gpu_ids]

vllm/executor/ray_tpu_executor.py

@@ -13,7 +13,7 @@
 from vllm.model_executor.layers.sampler import SamplerOutput
 from vllm.sequence import ExecuteModelRequest
 from vllm.utils import (get_distributed_init_method, get_ip, get_open_port,
-                        get_vllm_instance_id, make_async)
+                        make_async)
 
 if ray is not None:
     from ray.util.scheduling_strategies import PlacementGroupSchedulingStrategy
@@ -144,12 +144,8 @@ def sort_by_driver_then_worker_ip(worker):
         for i, (node_id, _) in enumerate(worker_node_and_gpu_ids):
             node_workers[node_id].append(i)
 
-        VLLM_INSTANCE_ID = get_vllm_instance_id()
-
         # Set environment variables for the driver and workers.
         all_args_to_update_environment_variables = [({
-            "VLLM_INSTANCE_ID":
-            VLLM_INSTANCE_ID,
             "VLLM_TRACE_FUNCTION":
             str(envs.VLLM_TRACE_FUNCTION),
         }, ) for _ in worker_node_and_gpu_ids]

vllm/executor/ray_xpu_executor.py

@@ -5,7 +5,7 @@
 from vllm.executor.ray_gpu_executor import RayGPUExecutor, RayGPUExecutorAsync
 from vllm.executor.xpu_executor import XPUExecutor
 from vllm.logger import init_logger
-from vllm.utils import get_vllm_instance_id, make_async
+from vllm.utils import make_async
 
 logger = init_logger(__name__)
 
@@ -17,12 +17,8 @@ def _get_env_vars_to_be_updated(self):
         worker_node_and_gpu_ids = self._run_workers("get_node_and_gpu_ids",
                                                     use_dummy_driver=True)
 
-        VLLM_INSTANCE_ID = get_vllm_instance_id()
-
         # Set environment variables for the driver and workers.
         all_args_to_update_environment_variables = [({
-            "VLLM_INSTANCE_ID":
-            VLLM_INSTANCE_ID,
             "VLLM_TRACE_FUNCTION":
             str(envs.VLLM_TRACE_FUNCTION),
         }, ) for (_, _) in worker_node_and_gpu_ids]

vllm/utils.py

@@ -24,9 +24,9 @@
 from collections.abc import Iterable, Mapping
 from functools import lru_cache, partial, wraps
 from platform import uname
-from typing import (Any, AsyncGenerator, Awaitable, Callable, Dict, Generic,
-                    Hashable, List, Literal, Optional, OrderedDict, Set, Tuple,
-                    Type, TypeVar, Union, overload)
+from typing import (TYPE_CHECKING, Any, AsyncGenerator, Awaitable, Callable,
+                    Dict, Generic, Hashable, List, Literal, Optional,
+                    OrderedDict, Set, Tuple, Type, TypeVar, Union, overload)
 from uuid import uuid4
 
 import numpy as np
@@ -43,6 +43,9 @@
 from vllm.logger import enable_trace_function_call, init_logger
 from vllm.platforms import current_platform
 
+if TYPE_CHECKING:
+    from vllm.config import VllmConfig
+
 logger = init_logger(__name__)
 
 # Exception strings for non-implemented encoder/decoder scenarios
@@ -335,17 +338,6 @@ def random_uuid() -> str:
     return str(uuid.uuid4().hex)
 
 
-@lru_cache(maxsize=None)
-def get_vllm_instance_id() -> str:
-    """
-    If the environment variable VLLM_INSTANCE_ID is set, return it.
-    Otherwise, return a random UUID.
-    Instance id represents an instance of the VLLM. All processes in the same
-    instance should have the same instance id.
-    """
-    return envs.VLLM_INSTANCE_ID or f"vllm-instance-{random_uuid()}"
-
-
 @lru_cache(maxsize=None)
 def in_wsl() -> bool:
     # Reference: https://github.com/microsoft/WSL/issues/4071
@@ -997,7 +989,7 @@ def find_nccl_library() -> str:
     return so_file
 
 
-def enable_trace_function_call_for_thread() -> None:
+def enable_trace_function_call_for_thread(vllm_config: "VllmConfig") -> None:
     """Set up function tracing for the current thread,
     if enabled via the VLLM_TRACE_FUNCTION environment variable
     """
@@ -1009,7 +1001,8 @@ def enable_trace_function_call_for_thread() -> None:
         filename = (f"VLLM_TRACE_FUNCTION_for_process_{os.getpid()}"
                     f"_thread_{threading.get_ident()}_"
                     f"at_{datetime.datetime.now()}.log").replace(" ", "_")
-        log_path = os.path.join(tmp_dir, "vllm", get_vllm_instance_id(),
+        log_path = os.path.join(tmp_dir, "vllm",
+                                f"vllm-instance-{vllm_config.instance_id}",
                                 filename)
         os.makedirs(os.path.dirname(log_path), exist_ok=True)
         enable_trace_function_call(log_path)

vllm/worker/worker_base.py

@@ -439,7 +439,7 @@ def init_worker(self, *args, **kwargs):
         Here we inject some common logic before initializing the worker.
         Arguments are passed to the worker class constructor.
         """
-        enable_trace_function_call_for_thread()
+        enable_trace_function_call_for_thread(self.vllm_config)
 
         # see https://github.com/NVIDIA/nccl/issues/1234
         os.environ['NCCL_CUMEM_ENABLE'] = '0'