Add Llama 4 to FA3 test (#5509)

.github/workflows/pr-test.yml

@@ -87,6 +87,26 @@ jobs:
           cd test/srt
           python3 run_suite.py --suite per-commit-2-gpu
 
+  unit-test-backend-8-gpu:
+    if: (github.repository == 'sgl-project/sglang' || github.event_name == 'pull_request') &&
+        github.event.pull_request.draft == false
+    runs-on: 8-gpu-runner
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        env:
+          FLASHINFER_REPO: ${{ inputs.version == 'nightly' && 'https://flashinfer.ai/whl/nightly/cu124/torch2.5/flashinfer-python' || 'https://flashinfer.ai/whl/cu124/torch2.5/flashinfer-python' }}
+        run: |
+          bash scripts/ci_install_dependency.sh
+
+      - name: Run test
+        timeout-minutes: 30
+        run: |
+          cd test/srt
+          python3 run_suite.py --suite per-commit-8-gpu
+
   performance-test-1-gpu-part-1:
     if: (github.repository == 'sgl-project/sglang' || github.event_name == 'pull_request') &&
         github.event.pull_request.draft == false