Show detailed GPU status in UI

app.py

@@ -505,7 +505,16 @@ with gr.Blocks(title="KAIdol A/B Test Arena", theme=gr.themes.Soft()) as demo:
     gr.Markdown("# KAIdol A/B Test Arena")
     gr.Markdown("K-pop 아이돌 롤플레이 모델 A/B 비교 평가 (소형 Student 모델 11개)")
 
-    mode_text = "**GPU 모드**: 실제 모델 추론" if GPU_AVAILABLE else "**Mock 모드**: 테스트 응답 생성"
+    # GPU 상태 상세 정보
+    try:
+        import torch
+        torch_ver = torch.__version__
+        cuda_avail = torch.cuda.is_available()
+        cuda_ver = torch.version.cuda if cuda_avail else "N/A"
+        gpu_name = torch.cuda.get_device_name(0) if cuda_avail else "N/A"
+        mode_text = f"**GPU 모드**: {gpu_name} (CUDA {cuda_ver}, PyTorch {torch_ver})" if cuda_avail else f"**Mock 모드**: CUDA not available (PyTorch {torch_ver})"
+    except:
+        mode_text = "**Mock 모드**: PyTorch not loaded"
     gr.Markdown(mode_text)
 
     with gr.Tabs():