[Dep] Upgrade flashinfer to 0.6.14 (#29910)

Co-authored-by: Brayden Zhong <b8zhong@uwaterloo.ca>
Co-authored-by: Mohammad Miadh Angkad <176301910+mmangkad@users.noreply.github.com>

python/pyproject.toml

@@ -31,8 +31,7 @@ dependencies = [
   "einops",
   "fastapi",
   "flash-attn-4==4.0.0b15",
-  "flashinfer_cubin==0.6.12",
-  "flashinfer_python[cu13]==0.6.12", # keep it aligned with jit-cache version in Dockerfile
+  "flashinfer_python[cu13]==0.6.14", # keep it aligned with jit-cache version in Dockerfile
   "gguf",
   "interegular",
   "IPython",

python/sglang/srt/entrypoints/engine.py

@@ -1303,7 +1303,7 @@ def _set_envs_and_config(server_args: ServerArgs):
         if server_args.attention_backend == "flashinfer":
             assert_pkg_version(
                 "flashinfer_python",
-                "0.6.12",
+                "0.6.14",
                 "Please uninstall the old version and "
                 "reinstall the latest version by following the instructions "
                 "at https://docs.flashinfer.ai/installation.html.",

python/sglang/srt/utils/common.py

@@ -1891,7 +1891,7 @@ def check_pkg_version_at_least(pkg: str, min_version: str) -> bool:
 
     Args:
         pkg: Package name (distribution name, e.g., "flashinfer-python")
-        min_version: Minimum version required (e.g., "0.6.12")
+        min_version: Minimum version required (e.g., "0.6.14")
 
     Returns:
         True if package is installed and version >= min_version, False otherwise