log stack trace for marlin jit error

gptqmodel/utils/cpp.py

@@ -9,25 +9,24 @@
 import logging
 import math
 import os
+import pcre
 import platform
 import shutil
 import subprocess
 import sys
 import threading
 import time
+import traceback
 from contextlib import contextmanager
 from pathlib import Path
+from torch.utils.cpp_extension import CUDA_HOME, _get_build_directory, _get_cuda_arch_flags, load
 from typing import Callable, Optional, Sequence
 
-import pcre
 import torch
-from torch.utils.cpp_extension import CUDA_HOME, _get_build_directory, _get_cuda_arch_flags, load
-
 from .env import env_flag
 from .jit_compile_baselines import get_jit_compile_baseline_seconds
 from .logger import setup_logger
 
-
 log = logging.getLogger(__name__)
 
 # One process-local lock serializes every torch.ops JIT cache mutation and
@@ -64,6 +63,17 @@
 _TORCH_OPS_BUILD_ROOT_ENV = "GPTQMODEL_TORCH_EXTENSIONS_DIR"
 
 
+def _log_cache_clear_callsite(*, reason: str, target_path: str | Path) -> None:
+    stack_text = "".join(traceback.format_stack(limit=32))
+    log.warning(
+        "[jit-cache-clear] reason=%s pid=%s path=%s\ncallstack:\n%s",
+        reason,
+        os.getpid(),
+        target_path,
+        stack_text,
+    )
+
+
 def _nvcc_path() -> Optional[str]:
     return shutil.which("nvcc")
 
@@ -826,6 +836,10 @@ def clear_cache(self) -> None:
             self._op_cache = {}
             build_root = self.base_build_root()
             if build_root.exists():
+                _log_cache_clear_callsite(
+                    reason=f"{self.display_name}.clear_cache",
+                    target_path=build_root,
+                )
                 shutil.rmtree(build_root, ignore_errors=True)
 
     def last_error_message(self) -> str:
@@ -880,6 +894,10 @@ def load(self) -> bool:
 
             if force_rebuild and base_build_root.exists():
                 setup_logger().info(f"{self.display_name}: clearing cached JIT extension at `{base_build_root}`.")
+                _log_cache_clear_callsite(
+                    reason=f"{self.display_name}.force_rebuild",
+                    target_path=base_build_root,
+                )
                 shutil.rmtree(base_build_root, ignore_errors=True)
 
             build_root.mkdir(parents=True, exist_ok=True)
@@ -1023,6 +1041,10 @@ def safe_load_cpp_ext(
             build_directory = build_directory or _get_build_directory(name, verbose=verbose)
             if os.path.exists(build_directory):
                 try:
+                    _log_cache_clear_callsite(
+                        reason="safe_load_cpp_ext.first_init_cleanup",
+                        target_path=build_directory,
+                    )
                     shutil.rmtree(build_directory)
                     if verbose:
                         log.debug(f"[safe_cpp_extension_load] Removed old build directory: {build_directory}")