Add stable ci (#3460)

* add stable ci

* fix

* update

* fix

* rename tests dir;fix stable ci bug

* add timeout limit

* update

tests/distributed/test_custom_all_reduce.py

@@ -0,0 +1,48 @@
+# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import subprocess
+import sys
+
+
+def test_custom_all_reduce_launch():
+    """
+    test_custom_all_reduce
+    """
+    current_dir = os.path.dirname(os.path.abspath(__file__))
+    custom_all_reduce_script = os.path.join(current_dir, "custom_all_reduce.py")
+    os.environ["CUDA_VISIBLE_DEVICES"] = "0,1"
+    command = [
+        sys.executable,
+        "-m",
+        "paddle.distributed.launch",
+        "--gpus",
+        "0,1",
+        custom_all_reduce_script,
+    ]
+
+    process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
+
+    try:
+        stdout, stderr = process.communicate(timeout=400)
+        return_code = process.returncode
+    except subprocess.TimeoutExpired:
+        process.kill()
+        stdout, stderr = process.communicate()
+        return_code = -1
+    assert return_code == 0, f"Process exited with code {return_code}"
+
+
+test_custom_all_reduce_launch()