{
  "study_id": "dash0-qwen30b-a3b-community-vllm020-chat-0-8k-noharness",
  "hardware": {
    "gpu_count": 8,
    "gpu_model": "H20",
    "host_candidates": [
      "dash0"
    ]
  },
  "model": {
    "model_id": "Qwen/Qwen3-30B-A3B",
    "served_model_name": "qwen3-30b-a3b-community"
  },
  "engine": {
    "engine_name": "vllm",
    "engine_version": "0.20.0",
    "exec_path": "/tmp/wjh/venvs/vllm-0.20.0-cu129/bin/vllm",
    "cwd": "/home/admin/cpfs/wjh/aituner/aituner",
    "host": "127.0.0.1",
    "port": 18231,
    "healthcheck_path": "/v1/models",
    "ready_timeout_s": 900,
    "request_timeout_s": 900,
    "launch_args": [
      "serve",
      "/home/admin/cpfs/wjh/models/Qwen/Qwen3-30B-A3B"
    ],
    "base_envs": {
      "CUDA_VISIBLE_DEVICES": "0,1,2,3,4,5,6,7",
      "HOME": "/tmp/wjh",
      "XDG_CACHE_HOME": "/tmp/wjh/.cache"
    },
    "base_flags": {
      "host": "127.0.0.1",
      "port": 18231,
      "served-model-name": "qwen3-30b-a3b-community"
    },
    "tunable_envs": [],
    "tunable_flags": [
      "tensor-parallel-size",
      "data-parallel-size",
      "enable-expert-parallel",
      "expert-parallel-size",
      "gpu-memory-utilization",
      "max-num-batched-tokens",
      "max-num-seqs",
      "block-size",
      "enable-prefix-caching",
      "enable-chunked-prefill"
    ],
    "topology_constraints": {
      "require_tp_dp_product_equals_gpu_count": false,
      "require_ep_size_leq_tp_dp_product": true,
      "require_ep_size_divides_tp_dp_product": true,
      "require_enable_expert_parallel_when_ep_gt_one": true,
      "validate_cuda_graph_sizes_divisible_by_tp_when_tp_ep_reduce_scatter": true,
      "allowed_tp_dp_products": [1, 2, 4, 8],
      "allowed_tensor_parallel_sizes": [1, 2, 4, 8],
      "allowed_data_parallel_sizes": [1, 2, 4, 8],
      "allowed_expert_parallel_sizes": [1, 2, 4, 8]
    },
    "python_executable": "/tmp/wjh/venvs/vllm-0.20.0-cu129/bin/python"
  },
  "trace": {
    "windows_path": "/home/admin/cpfs/wjh/aituner/aituner/trace_windows/windows.json",
    "window_id": "chat_w20260311_1000",
    "u_field": "sampling_u",
    "timestamp_field": "timestamp",
    "max_concurrency": 64,
    "input_length_filter": {
      "min_input_tokens": 0,
      "max_input_tokens": 8192
    },
    "max_requests_per_probe": 2048,
    "replay_time_scale": 1.0,
    "early_stop_max_lag_s": 120.0,
    "early_stop_max_elapsed_s": 900.0
  },
  "slo": {
    "target_pass_rate": 0.95,
    "ttft_rule": {
      "kind": "step_ms",
      "buckets": [
        {
          "max_input_tokens": 4096,
          "threshold_ms": 2000
        },
        {
          "max_input_tokens": 32768,
          "threshold_ms": 4000
        },
        {
          "threshold_ms": 6000
        }
      ]
    },
    "tpot_rule": {
      "kind": "fixed_ms",
      "threshold_ms": 50
    }
  },
  "search": {
    "low": 0.0,
    "high": 0.125,
    "tolerance": 0.001,
    "max_probes": 6,
    "sample_seed": 20260325
  },
  "llm": {
    "system_prompt": "Tune community vLLM 0.20.0 serving for Qwen3-30B-A3B. Start from the default vLLM engine configuration, use only launch-safe patches, and optimize request_rate_per_gpu under the configured SLO.",
    "max_history_trials": 8,
    "use_harness": false,
    "endpoint": {
      "provider": "codex",
      "model": "gpt-5.4",
      "stream": true,
      "api_key_env": "OPENAI_API_KEY",
      "timeout_s": 240
    }
  }
}