vllm/vllm/triton_utils/importing.py
Mengqing Cao 2f54045508
[Bugfix][Misc] Use TritonPlaceholderModule to defensively import triton (#15099)
Signed-off-by: Mengqing Cao <cmq0113@163.com>
2025-04-24 22:51:02 -07:00

54 lines
1.6 KiB
Python

# SPDX-License-Identifier: Apache-2.0
import sys
import types
from importlib.util import find_spec
from vllm.logger import init_logger
logger = init_logger(__name__)
HAS_TRITON = (
find_spec("triton") is not None
or find_spec("pytorch-triton-xpu") is not None # Not compatible
)
if not HAS_TRITON:
logger.info("Triton not installed or not compatible; certain GPU-related"
" functions will not be available.")
class TritonPlaceholder(types.ModuleType):
def __init__(self):
super().__init__("triton")
self.jit = self._dummy_decorator("jit")
self.autotune = self._dummy_decorator("autotune")
self.heuristics = self._dummy_decorator("heuristics")
self.language = TritonLanguagePlaceholder()
logger.warning_once(
"Triton is not installed. Using dummy decorators. "
"Install it via `pip install triton` to enable kernel"
"compilation.")
def _dummy_decorator(self, name):
def decorator(func=None, **kwargs):
if func is None:
return lambda f: f
return func
return decorator
class TritonLanguagePlaceholder(types.ModuleType):
def __init__(self):
super().__init__("triton.language")
self.constexpr = None
self.dtype = None
sys.modules['triton'] = TritonPlaceholder()
sys.modules['triton.language'] = TritonLanguagePlaceholder()
if 'triton' in sys.modules:
logger.info("Triton module has been replaced with a placeholder.")