Adjust GPU memory utilization and device settings in qwen2_5_omni_ci.yaml for improved performance

Signed-off-by: tzhouam <tzhouam@connect.ust.hk>

tests/e2e/stage_configs/qwen2_5_omni_ci.yaml

@@ -47,7 +47,7 @@ stage_args:
       max_model_len: 16384
       max_num_batched_tokens: 16384
       max_num_seqs: 1
-      gpu_memory_utilization: 0.9
+      gpu_memory_utilization: 0.4
       skip_mm_profiling: true
       enforce_eager: true
       trust_remote_code: true
@@ -67,14 +67,14 @@ stage_args:
   - stage_id: 2
     runtime:
       process: true
-      devices: "2"            # Example: use a different GPU than the previous stage; use "0" if single GPU
+      devices: "1"            # Example: use a different GPU than the previous stage; use "0" if single GPU
       max_batch_size: 1
     engine_args:
       model_stage: code2wav
       model_arch: Qwen2_5OmniForConditionalGeneration
       worker_type: generation
       scheduler_cls: vllm_omni.core.sched.omni_generation_scheduler.OmniGenerationScheduler
-      gpu_memory_utilization: 0.9 #increase the gpu memory utilization to enable the test on H800
+      gpu_memory_utilization: 0.5 #increase the gpu memory utilization to enable the test on H800
       enforce_eager: true
       trust_remote_code: true
       enable_prefix_caching: false