[CI] Add triton ascend in nightly CI (#5716)

### What this PR does / why we need it?
Add triton ascend in nightly
### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.13.0
- vLLM main:
2f4e6548ef

---------

Signed-off-by: Meihan-chen <jcccx.cmh@gmail.com>

.github/workflows/_e2e_nightly_single_node.yaml

@@ -123,8 +123,7 @@ jobs:
           pip install custom_ops-1.0-cp311-cp311-linux_aarch64.whl
           . /usr/local/Ascend/ascend-toolkit/set_env.sh
 
-      - name: Install triton-ascend
-        if: ${{ inputs.name == 'test_custom_op' }}
+      - name: Install Ascend toolkit & triton_ascend
         shell: bash -l {0}
         run: |
           BISHENG_NAME="Ascend-BiSheng-toolkit_aarch64_20260105.run"

.github/workflows/_e2e_nightly_single_node_models.yaml

@@ -104,8 +104,7 @@ jobs:
           pip install -r requirements-dev.txt
           pip install -v -e .
 
-      - name: Install Ascend toolkit & triton_ascend (for Qwen3-Next-80B-A3B-Instruct)
-        if: ${{ inputs.runner == 'linux-aarch64-a2-4' && contains(inputs.model_list, 'Qwen3-Next-80B-A3B-Instruct') }}
+      - name: Install Ascend toolkit & triton_ascend
         shell: bash -l {0}
         run: |
           BISHENG_NAME="Ascend-BiSheng-toolkit_aarch64_20260105.run"

tests/e2e/nightly/multi_node/scripts/run.sh

@@ -125,6 +125,31 @@ install_extra_components() {
     echo "====> Extra components installation completed"
 }
 
+install_triton_ascend() {
+    echo "====> Installing triton_ascend"
+
+    BISHENG_NAME="Ascend-BiSheng-toolkit_aarch64_20260105.run"
+    BISHENG_URL="https://vllm-ascend.obs.cn-north-4.myhuaweicloud.com/vllm-ascend/${BISHENG_NAME}"
+
+    if ! wget -q -O "${BISHENG_NAME}" "${BISHENG_URL}"; then
+        echo "Failed to download ${BISHENG_NAME}"
+        return 1
+    fi
+    chmod +x "${BISHENG_NAME}"
+
+    if ! "./${BISHENG_NAME}" --install; then
+        rm -f "${BISHENG_NAME}"
+        echo "Failed to install ${BISHENG_NAME}"
+        return 1
+    fi
+    rm -f "${BISHENG_NAME}"
+
+    export PATH=/usr/local/Ascend/tools/bishengir/bin:$PATH
+    which bishengir-compile
+    python3 -m pip install -i https://test.pypi.org/simple/ triton-ascend==3.2.0.dev20260105
+    echo "====> Triton ascend installation completed"
+}
+
 kill_npu_processes() {
   pgrep python3 | xargs -r kill -9
   pgrep VLLM | xargs -r kill -9
@@ -152,6 +177,7 @@ main() {
     check_npu_info
     check_and_config
     show_vllm_info
+    install_triton_ascend
     if [[ "$CONFIG_YAML_PATH" == *"DeepSeek-V3_2-Exp-bf16.yaml" ]]; then
         install_extra_components
     fi