[AMD CI] Add 2-GPU sgl-kernel Tests (#17555)

Co-authored-by: YC Tseng <yctseng@amd.com>

.github/workflows/pr-test-amd.yml

@@ -152,6 +152,47 @@ jobs:
           docker exec -w /sglang-checkout/sgl-kernel/tests/sgl_diffusion ci_sglang python3 -m pytest test_timestep_embedding.py
           docker exec -w /sglang-checkout/sgl-kernel/tests ci_sglang python3 -m pytest test_moe_topk_sigmoid.py
           docker exec -w /sglang-checkout/sgl-kernel/tests ci_sglang python3 -m pytest test_torch_defaults_reset.py
+
+  sgl-kernel-unit-test-2-gpu-amd:
+    needs: [check-changes]
+    if: |
+      always() &&
+      (
+        (inputs.target_stage == 'sgl-kernel-unit-test-2-gpu-amd') ||
+        (
+          !inputs.target_stage &&
+          needs.check-changes.outputs.sgl_kernel == 'true'
+        )
+      )
+    strategy:
+      fail-fast: false
+      matrix:
+        runner: [linux-mi325-gpu-2]
+    runs-on: ${{matrix.runner}}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.pr_head_sha || inputs.ref || github.sha }}
+
+      - name: Ensure VRAM is clear
+        run: bash scripts/ensure_vram_clear.sh rocm
+
+      - name: Start CI container
+        run: bash scripts/ci/amd_ci_start_container.sh
+        env:
+          GITHUB_WORKSPACE: ${{ github.workspace }}
+
+      - name: Install dependencies
+        run: |
+          bash scripts/ci/amd_ci_install_dependency.sh
+
+      - name: Run test
+        timeout-minutes: 20
+        run: |
+          docker exec -w /sglang-checkout/sgl-kernel/tests ci_sglang python3 -m pytest test_amd_deterministic_custom_allreduce.py
+          docker exec -w /sglang-checkout/sgl-kernel/tests ci_sglang python3 -m pytest test_amd_nccl_allreduce_determinism.py
+
   # =============================================== primary ====================================================
 
   stage-a-test-1-amd:
@@ -842,6 +883,7 @@ jobs:
         check-changes,
 
         sgl-kernel-unit-test-amd,
+        sgl-kernel-unit-test-2-gpu-amd,
         multimodal-gen-test-1-gpu-amd,
         multimodal-gen-test-2-gpu-amd,