[ci] add ray_test.yml running on self-hosted v100

.github/workflows/ray_test.yml

@@ -0,0 +1,38 @@
+name: ray
+
+on:
+  # Trigger the workflow on push or pull request,
+  # but only for the main branch
+  push:
+    branches:
+      - main
+    paths:
+      - "**/*.py"
+      - .github/workflows/ray_test.yml
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "**/*.py"
+      - .github/workflows/ray_test.yml
+
+jobs:
+  ray:
+    runs-on: self-host-gpu
+    strategy:
+      matrix:
+        python-version: ["3.12"]
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
+        with:
+          python-version: ${{ matrix.python-version }}
+      # - name: Install dependencies
+      #   run: |
+      #     python -m pip install --upgrade pip
+      #     pip install yapf
+      #     pip install toml==0.10.2
+      - name: Running some ray test that only need 2 GPUs
+        run: |
+          pytest -s -x test_rvdz.py test_driverfunc_to_worker.py test_data_transfer.py test_colocated_workers.py test_check_worker_alive.py