[CI] Fix rerun-ut workflow: add DeepEP install, RDMA env, Blackwell detection (#19803)

.github/workflows/rerun-ut.yml

@@ -17,10 +17,16 @@ on:
         required: false
         type: string
         default: ""
+      use_deepep:
+        description: "Use ci_install_deepep.sh instead of ci_install_dependency.sh"
+        required: false
+        type: string
+        default: "false"
 
 env:
   SGLANG_IS_IN_CI: true
   SGLANG_CUDA_COREDUMP: "1"
+  SGLANG_JIT_DEEPGEMM_FAST_WARMUP: true
 
 permissions:
   actions: write
@@ -32,7 +38,8 @@ jobs:
     timeout-minutes: 120
     env:
       RUNNER_LABELS: ${{ inputs.runner_label }}
-      IS_BLACKWELL: ${{ inputs.runner_label == '1-gpu-5090' && '1' || '' }}
+      IS_BLACKWELL: ${{ (inputs.runner_label == '1-gpu-5090' || contains(inputs.runner_label, 'b200')) && '1' || '' }}
+      SGLANG_CI_RDMA_ALL_DEVICES: ${{ inputs.runner_label == '8-gpu-h20' && 'mlx5_1,mlx5_2,mlx5_3,mlx5_4' || '' }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -45,7 +52,11 @@ jobs:
           if [[ "${{ inputs.runner_label }}" == "1-gpu-5090" ]]; then
             source /etc/profile.d/sglang-ci.sh
           fi
-          bash scripts/ci/cuda/ci_install_dependency.sh
+          if [[ "${{ inputs.use_deepep }}" == "true" ]]; then
+            bash scripts/ci/cuda/ci_install_deepep.sh
+          else
+            bash scripts/ci/cuda/ci_install_dependency.sh
+          fi
 
       - name: Run test
         timeout-minutes: 60