Reserve more memory for DeepSeekOCR model and adjust server start timeout for DeepGEMM to reduce flakiness (#15277)

test/srt/test_vision_openai_server_a.py

@@ -162,6 +162,10 @@ class TestQwen2AudioServer(AudioOpenAITestMixin):
 class TestDeepseekOCRServer(TestOpenAIMLLMServerBase):
     model = "deepseek-ai/DeepSeek-OCR"
     trust_remote_code = False
+    extra_args = [
+        "--mem-fraction-static=0.70",
+        "--cuda-graph-max-bs=4",
+    ]
 
     def verify_single_image_response_for_ocr(self, response):
         """Verify DeepSeek-OCR grounding output with coordinates"""