da7d3af56e
varlen_fwd()崩溃是因为xformers patch只打到了corex-3.2.3/lib64路径, 但runtime加载的是corex/lib/python3路径(PYTHONPATH优先级更高)。 launch_server.py现在覆盖所有关键文件到每个vllm安装: - qwen3_5.py, paged_attn.py, model_runner.py等 - 12个prebuilt .so - 运行patch_xformers_sdpa_seq.py等源码patch脚本
111 lines
4.8 KiB
Python
111 lines
4.8 KiB
Python
#!/usr/bin/env python3
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"""launch_server.py — Ensure our patched api_server.py runs, not the base image's.
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Patches the RUNNING vllm install's api_server.py/cli_args.py in-place before
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importing, then delegates to the standard vllm api_server main().
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"""
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import os, sys, shutil
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def _force_patch():
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"""Copy our files over ALL vllm installs found on sys.path."""
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src_dir = os.path.dirname(os.path.abspath(__file__))
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patched = set()
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for p in sys.path:
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vllm_root = os.path.join(p, "vllm")
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api = os.path.join(vllm_root, "entrypoints", "openai", "api_server.py")
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if not os.path.isfile(api) or api in patched:
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continue
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# --- Entrypoints ---
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for f in ["api_server.py", "cli_args.py", "serving_chat.py",
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"protocol.py", "serving_tokenization.py"]:
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src = os.path.join(src_dir, f)
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dst = os.path.join(vllm_root, "entrypoints", "openai", f)
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if os.path.isfile(src):
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shutil.copy2(src, dst)
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# chat_utils
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cu_src = os.path.join(src_dir, "chat_utils.py")
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cu_dst = os.path.join(vllm_root, "entrypoints", "chat_utils.py")
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if os.path.isfile(cu_src):
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shutil.copy2(cu_src, cu_dst)
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# reasoning
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reason_src = os.path.join(src_dir, "reasoning")
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reason_dst = os.path.join(vllm_root, "reasoning")
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if os.path.isdir(reason_src):
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shutil.copytree(reason_src, reason_dst, dirs_exist_ok=True)
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# tool parser
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tp_src = os.path.join(src_dir, "qwen3coder_tool_parser.py")
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tp_dst = os.path.join(vllm_root, "entrypoints", "openai",
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"tool_parsers", "qwen3coder_tool_parser.py")
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if os.path.isfile(tp_src) and os.path.isdir(os.path.dirname(tp_dst)):
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shutil.copy2(tp_src, tp_dst)
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# --- Model, attention, engine files (critical for runtime) ---
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model_dir = os.path.join(vllm_root, "model_executor", "models")
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attn_dir = os.path.join(vllm_root, "attention", "ops")
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core_dir = os.path.join(vllm_root, "core")
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for fname, dst_dir in [
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("qwen3_5.py", model_dir),
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("mamba_cache.py", model_dir),
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("registry.py", model_dir),
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("_custom_ops.py", vllm_root),
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("paged_attn.py", attn_dir),
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("sequence.py", vllm_root),
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("scheduler.py", core_dir),
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("model_runner.py", os.path.join(vllm_root, "worker")),
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("bi100_env.py", vllm_root),
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("bi100_profile.py", vllm_root),
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("block_major_kv_cache.py", vllm_root),
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("gdn_prefix.py", vllm_root),
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("logits_processor.py", os.path.join(vllm_root, "model_executor", "layers")),
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("sampler.py", os.path.join(vllm_root, "model_executor", "layers")),
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]:
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src = os.path.join(src_dir, fname)
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if os.path.isfile(src) and os.path.isdir(dst_dir):
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shutil.copy2(src, os.path.join(dst_dir, fname))
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# --- Prebuilt .so files ---
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prebuilt_dir = os.path.join(src_dir, "prebuilt", "corex-3.2.3-ivcore10")
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if os.path.isdir(prebuilt_dir):
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for so_file in os.listdir(prebuilt_dir):
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if so_file.endswith(".so"):
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src_so = os.path.join(prebuilt_dir, so_file)
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dst_so = os.path.join(vllm_root, so_file)
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if not os.path.isfile(dst_so):
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shutil.copy2(src_so, dst_so)
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# --- Run Python source patches on this vllm install ---
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for patch_script in [
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"patch_xformers_sdpa_seq.py",
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"patch_xformers_profile.py",
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"patch_model_runner.py",
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"patch_vllm_qwen3_5.py",
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"patch_corex_swap_blocks.py",
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]:
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script_path = os.path.join(src_dir, patch_script)
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if os.path.isfile(script_path):
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try:
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import subprocess
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subprocess.run([sys.executable, script_path],
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cwd=src_dir, timeout=30,
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capture_output=True)
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except Exception:
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pass
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patched.add(api)
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if patched:
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print(f"[launch] Force-patched {len(patched)} vllm installs", file=sys.stderr)
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else:
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print("[launch] WARNING: no vllm installs found to patch", file=sys.stderr)
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_force_patch()
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# execvp replaces this process with vllm api_server, passing all CLI args through.
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# This is the safest approach: no import issues, our patched files are already on disk.
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print("[launch] Starting vllm api_server with args:", sys.argv[1:], file=sys.stderr)
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os.execvp(sys.executable, [
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sys.executable, "-m", "vllm.entrypoints.openai.api_server"
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] + sys.argv[1:])
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