diff --git a/.github/workflows/pr-test-rust.yml b/.github/workflows/pr-test-rust.yml
index 4202f6c2e..a1e96316e 100644
--- a/.github/workflows/pr-test-rust.yml
+++ b/.github/workflows/pr-test-rust.yml
@@ -287,7 +287,7 @@ jobs:
 
       - name: Run E2E tests
         run: |
-          bash scripts/killall_sglang.sh "nuk_gpus"
+          bash scripts/killall_sglang.sh all
           cd sgl-model-gateway
           ${{ matrix.env_vars }} ROUTER_LOCAL_MODEL_PATH="/home/ubuntu/models" pytest ${{ matrix.reruns }} ${{ matrix.parallel_opts }} ${{ matrix.test_dirs }} -s -vv -o log_cli=true --log-cli-level=INFO
 
diff --git a/scripts/killall_sglang.sh b/scripts/killall_sglang.sh
index e637aaee9..538b55911 100755
--- a/scripts/killall_sglang.sh
+++ b/scripts/killall_sglang.sh
@@ -1,11 +1,34 @@
 #!/bin/bash
 
+# Usage:
+#   ./killall_sglang.sh              - Kill SGLang processes only (NVIDIA mode)
+#   ./killall_sglang.sh rocm         - Kill SGLang processes only (ROCm mode)
+#   ./killall_sglang.sh all          - Kill all GPU processes (NVIDIA mode)
+#   ./killall_sglang.sh gpus 0,1,2,3 - Kill all processes on specific GPUs
+
 if [ "$1" = "rocm" ]; then
     echo "Running in ROCm mode"
 
     # Clean SGLang processes
     pgrep -f 'sglang::|sglang\.launch_server|sglang\.bench|sglang\.data_parallel|sglang\.srt|sgl_diffusion::' | xargs -r kill -9
 
+elif [ "$1" = "gpus" ] && [ -n "$2" ]; then
+    # Kill all processes on specific GPUs only
+    echo "Killing all processes on GPUs: $2"
+
+    # Show current GPU status
+    nvidia-smi
+
+    # Build device file list from GPU IDs (e.g., "0,1,2,3" -> "/dev/nvidia0 /dev/nvidia1 ...")
+    devices=$(echo "$2" | tr ',' '\n' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | sed 's|^|/dev/nvidia|' | tr '\n' ' ')
+    echo "Targeting devices: $devices"
+
+    # Kill all processes using specified GPU devices
+    [ -n "$devices" ] && lsof $devices 2>/dev/null | awk 'NR>1 {print $2}' | sort -u | xargs -r kill -9 2>/dev/null
+
+    # Show GPU status after clean up
+    nvidia-smi
+
 else
     # Show current GPU status
     nvidia-smi
@@ -13,8 +36,8 @@ else
     # Clean SGLang processes
     pgrep -f 'sglang::|sglang\.launch_server|sglang\.bench|sglang\.data_parallel|sglang\.srt|sgl_diffusion::' | xargs -r kill -9
 
-    # Clean all GPU processes if any argument is provided
-    if [ $# -gt 0 ]; then
+    # Clean all GPU processes if "all" argument is provided
+    if [ "$1" = "all" ]; then
         # Check if sudo is available
         if command -v sudo >/dev/null 2>&1; then
             sudo apt-get update