{
 "estate_schema_version": "1.0",
 "id": "giant-gobi-sun",
 "name": "Imagined 1 GW solar compute hub — Gobi",
 "names": {
  "zh": "想象中的 1 GW 戈壁光伏算力枢纽"
 },
 "operator": "Imagined (fictional design)",
 "kind": "imagined",
 "year": null,
 "imagined": true,
 "label": "Imagined — a fictional design built from public numbers",
 "label_zh": "想象设计——依据公开数据构建的虚构方案",
 "concept": "Solar + storage compute hub (East-Data-West-Computing context)",
 "famous_for": "Solar + storage compute hub (East-Data-West-Computing context): 1,002 MW IT, 546,048 GPUs, PUE 1.17 — designed by us, checked by the engine",
 "story": "An imagined 1 GW compute hub in the Gobi near Jiuquan, in the spirit of the East-Data-West-Computing plan: 4 halls, 79 pods of 96 GB200 NVL72 rack systems, dry coolers in a plateau climate with a 14 °C daily swing, and a 2 GW solar field with 4 GWh of batteries next door. The engine gives PUE 1.17 at a summer afternoon; the national backbone links it to Qingyang, Xi'an, Beijing and Shanghai.",
 "notable": [
  "79 pods × 96 GB200 NVL72 rack systems (120 kW each from the catalog) = 546,048 GPUs.",
  "Per pod the engine sees 12,686.1 kW IT, 14,864.5 kW facility, PUE 1.17 and 28,199,753 tokens/s at the design afternoon.",
  "24 CoolIT CHx750 CDUs per pod carry 70 % of the heat as liquid; Vertiv Liebert CW CRAHs take the rest.",
  "A year at 0.32 CNY/kWh: ¥3291 M for 10,284,240 MWh; 823 kt CO₂ at 80 g/kWh.",
  "Catalog list prices cover 5 of 8 part types per pod; the GB200 NVL72 has no list price in the catalog, so the BOM leaves it out."
 ],
 "assumptions": [
  "Scale: 1,000 MW IT target from the brief (IMAGINED-GIANTS.md §1); the pod count is that target ÷ the engine's pod IT load.",
  "Rack system: catalog record rack_system/nvidia/gb200-nvl72, 120 kW IT, 72 GPUs, 70 % liquid-cooled (catalog thermal data).",
  "Cooling: cdu/coolit/chx750 CDUs (750 kW, catalog) in loops of 3 per row, N+1; heat rejected to dry coolers; crah/vertiv/liebert-cw CRAHs (120 kW) on a chilled-water plant for the air share.",
  "Power: 2N from a 400 kV substation through ATS (grid / genset bank), transformers, switchboards and MW-class UPS banks (generic nodes: no MW-class UPS in the catalog), busway taps per rack; standby genset banks of Cat 3516C (2 MW standby, catalog); 2 GW solar PV + 4 GWh battery storage (as a site summary; diesel standby in the hall model).",
  "Climate: a July day at 22 °C mean with a 14 °C daily swing and 35 % RH (typical July climate for the region); the numbers are read at 15:00 local, the warmest hour.",
  "Grid factor 80 g CO₂/kWh and tariff 0.32 CNY/kWh: dc-world/reports/giants-references.md §2 / §3.",
  "Tokens: every rack serves a 70B chat model at 70–95 % load (engine estimate from GPU memory bandwidth and FLOPS; labelled estimated, not a benchmark).",
  "Water: closed-loop dry coolers, no consumptive water (evaporative trim not modelled).",
  "Estate: the DR and peer sites, link capacities and carriers are part of the imagined design, not real contracts; latency is estimated from distance.",
  "References for scale, cooling and power patterns: §1.7 东数西算 hubs: Qingyang PUE < 1.15, 0.28–0.38 RMB/kWh, free-air plateau climate; §1.6 Zhangbei: free-air cooling up to 300 days/year; §2.4 Northwest grid 560–620 g/kWh; green PPA ~50–120 g/kWh (dc-world/reports/giants-references.md)."
 ],
 "derived": {
  "basis": "engine on the representative hall (hall.json) at 15:00 local, mid-July, scaled by the pod count; rounded",
  "pod": {
   "racks": 96,
   "gpus": 6912,
   "itKw": 12686.1,
   "facilityKw": 14864.5,
   "pue": 1.17,
   "tokensPerS": 28199753,
   "tokensPerKwh": 8002362,
   "maxInletC": 21.4,
   "cdus": 24,
   "devicesOff": 0
  },
  "pods": 79,
  "halls": 4,
  "podsPerHall": 20,
  "itMw": 1002,
  "totalMw": 1174,
  "pue": 1.17,
  "racks": 7584,
  "gpus": 546048,
  "tokensPerS": 2227780487,
  "tokensPerKwh": 8002362,
  "waterM3PerDay": {
   "value": 0,
   "note": "closed-loop dry coolers: no consumptive water; evaporative trim on the hottest days is not modelled"
  },
  "energyMwhPerYear": 10284240,
  "energyCostPerYear": {
   "value": 3290956800,
   "currency": "CNY",
   "tariff": 0.32,
   "source": "dc-world/reports/giants-references.md"
  },
  "co2TonnesPerYear": {
   "value": 822739,
   "gco2PerKwh": 80,
   "source": "dc-world/reports/giants-references.md"
  },
  "bomPerPod": {
   "lines": [
    {
     "id": "rack_system/nvidia/gb200-nvl72",
     "name": "NVIDIA GB200 NVL72",
     "qty": 96,
     "unitUsd": null,
     "date": null,
     "source": "no public list price"
    },
    {
     "id": "switch/arista/7060x5-64d",
     "name": "Arista 7060X5-64D",
     "qty": 8,
     "unitUsd": null,
     "date": null,
     "source": "no public list price"
    },
    {
     "id": "switch/arista/7800r3-chassis",
     "name": "Arista 7800R3 Modular Chassis",
     "qty": 2,
     "unitUsd": null,
     "date": null,
     "source": "no public list price"
    },
    {
     "id": "cdu/coolit/chx750",
     "name": "CoolIT CHx750 Liquid-to-Liquid CDU",
     "qty": 24,
     "unitUsd": 62000,
     "date": "2022-09-15",
     "source": "https://www.coolitsystems.com/products/cdu/chx750/"
    },
    {
     "id": "crah/vertiv/liebert-cw",
     "name": "Vertiv Liebert CW Chilled Water CRAH",
     "qty": 41,
     "unitUsd": 32000,
     "date": "2020-01-15",
     "source": "https://www.vertiv.com/en-us/products-catalog/thermal-management/room-cooling/liebert-cw-chilled-water-cooling-system/"
    },
    {
     "id": "genset/cat/3516c",
     "name": "Caterpillar Cat 3516C HD Diesel Generator",
     "qty": 16,
     "unitUsd": 315000,
     "date": "2020-01-15",
     "source": "https://www.cat.com/en_US/products/new/power-systems/electric-power/diesel-generator-sets/1000000858.html"
    },
    {
     "id": "fire_detection/xtralis/vesda-vep",
     "name": "Xtralis VESDA-E VEP (VEP-A00-P)",
     "qty": 5,
     "unitUsd": 3800,
     "date": "2020-01-15",
     "source": "https://xtralis.com/p/vesda-e-vep"
    },
    {
     "id": "leak_detection/rle/seahawk-ld2100",
     "name": "RLE Technologies SeaHawk LD2100 Distance-Read Controller",
     "qty": 1,
     "unitUsd": 1650,
     "date": "2020-01-15",
     "source": "https://www.rletech.com/product/seahawk-ld2100/"
    }
   ],
   "pricedUsd": 7860650,
   "unpriced": [
    "NVIDIA GB200 NVL72 × 96",
    "Arista 7060X5-64D × 8",
    "Arista 7800R3 Modular Chassis × 2"
   ]
  },
  "powerChecks": {
   "dark": 0,
   "singleFeed": 0,
   "overloaded": []
  },
  "designChecks": []
 },
 "halls": [
  {
   "name": "Hall 1",
   "pods": 20,
   "itMw": 251
  },
  {
   "name": "Hall 2",
   "pods": 20,
   "itMw": 251
  },
  {
   "name": "Hall 3",
   "pods": 20,
   "itMw": 251
  },
  {
   "name": "Hall 4",
   "pods": 20,
   "itMw": 251
  }
 ],
 "what_ifs": [
  {
   "name": "Substation trip (utility lost for 15 minutes)",
   "verdict": "Rides through. lowest UPS runtime 10 min.",
   "findings": [
    "Substation (400 kV, imagined) lost power (+6 more)",
    "UPS bank A on battery · 10 min left (+3 more)"
   ]
  },
  {
   "name": "CDU loop leak at a rack manifold (6 L/min)",
   "verdict": "Outage. 1 devices lose power or trip (72 GPUs); 1.4 L released before isolation; 254.4 M tokens lost.",
   "findings": [
    "Leak at Manifold R001 · 0 L released",
    "Manifold R001 isolated after leak",
    "nvl72-r001 throttled to 20 %",
    "nvl72-r001 thermal shutdown"
   ]
  },
  {
   "name": "Trunk cable cut (GBS-1 ↔ XIY-POP)",
   "verdict": "GBS-1 ↔ XIY-POP cut, not protected — 2240 Gb/s rerouted via QY-HUB–XIY-POP, GBS-1–QY-HUB (17 ms instead of 16.6)",
   "findings": []
  }
 ],
 "sites": [
  {
   "site": "GBS-1",
   "city": "Gobi solar hub (imagined)",
   "country": "CN",
   "lat": 39.75,
   "lon": 98.45,
   "timezone": "Asia/Shanghai",
   "role": "primary",
   "provider": "own",
   "it_kw": 1002000,
   "pue": 1.17,
   "site_ref": null
  },
  {
   "site": "QY-HUB",
   "city": "Qingyang",
   "country": "CN",
   "lat": 36,
   "lon": 107.64,
   "timezone": "Asia/Shanghai",
   "role": "dr",
   "provider": "colo",
   "it_kw": 200000,
   "pue": 1.15,
   "site_ref": null
  },
  {
   "site": "XIY-POP",
   "city": "Xi'an",
   "country": "CN",
   "lat": 34.34,
   "lon": 108.94,
   "timezone": "Asia/Shanghai",
   "role": "pop",
   "provider": "colo",
   "it_kw": 3000,
   "pue": 1.3,
   "site_ref": null
  },
  {
   "site": "PEK-POP",
   "city": "Beijing",
   "country": "CN",
   "lat": 39.9,
   "lon": 116.4,
   "timezone": "Asia/Shanghai",
   "role": "pop",
   "provider": "colo",
   "it_kw": 5000,
   "pue": 1.3,
   "site_ref": null
  },
  {
   "site": "SHA-POP",
   "city": "Shanghai",
   "country": "CN",
   "lat": 31.23,
   "lon": 121.47,
   "timezone": "Asia/Shanghai",
   "role": "pop",
   "provider": "colo",
   "it_kw": 5000,
   "pue": 1.3,
   "site_ref": null
  }
 ],
 "links": [
  {
   "site_a": "GBS-1",
   "site_b": "QY-HUB",
   "type": "backbone",
   "bandwidth_gbps": 12800,
   "latency_ms": null,
   "length_km": null,
   "year": null,
   "protected": true,
   "carrier": "National backbone (imagined)",
   "sources": []
  },
  {
   "site_a": "GBS-1",
   "site_b": "XIY-POP",
   "type": "backbone",
   "bandwidth_gbps": 6400,
   "latency_ms": null,
   "length_km": null,
   "year": null,
   "protected": false,
   "carrier": "National backbone (imagined)",
   "sources": []
  },
  {
   "site_a": "QY-HUB",
   "site_b": "XIY-POP",
   "type": "backbone",
   "bandwidth_gbps": 6400,
   "latency_ms": null,
   "length_km": null,
   "year": null,
   "protected": true,
   "carrier": "National backbone (imagined)",
   "sources": []
  },
  {
   "site_a": "XIY-POP",
   "site_b": "PEK-POP",
   "type": "backbone",
   "bandwidth_gbps": 12800,
   "latency_ms": null,
   "length_km": null,
   "year": null,
   "protected": true,
   "carrier": "National backbone (imagined)",
   "sources": []
  },
  {
   "site_a": "XIY-POP",
   "site_b": "SHA-POP",
   "type": "backbone",
   "bandwidth_gbps": 12800,
   "latency_ms": null,
   "length_km": null,
   "year": null,
   "protected": true,
   "carrier": "National backbone (imagined)",
   "sources": []
  }
 ],
 "sources": [
  {
   "url": "https://github.com/lida0407/dcsim-plan/blob/main/dc-world/reports/giants-references.md",
   "title": "Mega-campus public references (giants-references.md)",
   "publisher": "dc-world",
   "date": "2026-10-15",
   "kind": "academic"
  }
 ],
 "confidence": "low",
 "updated": "2026-10-15",
 "hall": "hall.json",
 "zh": {
  "operator": "想象设计（虚构）",
  "concept": "光伏 + 储能算力枢纽（东数西算背景）",
  "famous_for": "光伏 + 储能算力枢纽（东数西算背景）：IT 1,002 MW、546,048 块 GPU、PUE 1.17——由我们设计，经引擎校验",
  "story": "想象中的 1 GW 算力枢纽，位于酒泉附近的戈壁，呼应\"东数西算\"：4 个机房、79 个单元，每个单元 96 台 GB200 NVL72 整机柜；高原气候昼夜温差 14 °C，采用干冷器散热，旁边是 2 GW 光伏和 4 GWh 储能。引擎给出夏季午后 PUE 1.17；国家骨干网将它连到庆阳、西安、北京和上海。",
  "water": "闭式干冷器：不消耗水；最热天的蒸发辅助冷却未模拟",
  "assumptions": [
   "规模：IT 目标 1,000 MW（来自 IMAGINED-GIANTS.md §1）；单元数 = 该目标 ÷ 引擎算出的单元 IT 负载。",
   "整机柜：目录记录 rack_system/nvidia/gb200-nvl72，IT 120 kW、72 块 GPU，70% 液冷（目录热参数）。",
   "冷却：cdu/coolit/chx750 CDU（750 kW，目录），每列 3 台组成环路，N+1；热量排向干冷器；风冷部分由 crah/vertiv/liebert-cw 精密空调（120 kW，冷冻水）承担。",
   "供电：400 kV 变电站 2N 接入，经 ATS（市电 / 柴发组）、变压器、配电柜和兆瓦级 UPS（通用节点：目录中没有兆瓦级 UPS），每台机柜由母线槽插接箱供电；备用电源为 Cat 3516C 柴发组（2 MW 备用，目录）；2 GW 光伏 + 4 GWh 储能（作为站点概要；机房模型中为柴油备用）。",
   "气候：七月典型日，平均 22 °C、昼夜温差 14 °C、相对湿度 35%；数值取当地 15:00，即最热的时段。",
   "电网排放因子 80 g CO₂/kWh，电价 0.32 CNY/kWh：dc-world/reports/giants-references.md §2 / §3。",
   "Token：每台机柜以 70–95% 负载运行一个 70B 对话模型（引擎根据 GPU 显存带宽和算力估算，标注为估算，并非基准测试）。",
   "用水：闭式干冷器，不消耗水（未模拟蒸发辅助冷却）。",
   "网络：灾备与对等站点、链路容量和运营商都是想象设计的一部分，并非真实合同；时延按距离估算。",
   "规模、冷却和供电方式的参考：§1.7 东数西算 hubs: Qingyang PUE < 1.15, 0.28–0.38 RMB/kWh, free-air plateau climate；§1.6 Zhangbei: free-air cooling up to 300 days/year；§2.4 Northwest grid 560–620 g/kWh; green PPA ~50–120 g/kWh（dc-world/reports/giants-references.md）。"
  ],
  "what_ifs": [
   {
    "name": "变电站跳闸（市电中断 15 分钟）",
    "verdict": "可平稳度过。 UPS 最低剩余后备 10 分钟。",
    "findings": [
     "Substation (400 kV, imagined) 失电 （另 6 项）",
     "UPS bank A 电池供电 · 剩余 10 分钟 （另 3 项）"
    ]
   },
   {
    "name": "CDU 环路在机柜分水器处泄漏（6 L/min）",
    "verdict": "业务中断。 1 台设备断电或保护停机（72 张 GPU）；关阀前漏出 1.4 L；损失 254.4 M Token。",
    "findings": [
     "Manifold R001 漏液 · 已漏出 0 L",
     "Manifold R001 漏液后已关阀隔离",
     "nvl72-r001 降频至 20%",
     "nvl72-r001 过热保护停机"
    ]
   },
   {
    "name": "骨干光缆中断（GBS-1 ↔ XIY-POP）",
    "verdict": "GBS-1 ↔ XIY-POP 中断且无保护——流量绕行 QY-HUB–XIY-POP、GBS-1–QY-HUB（17 ms，原 16.6 ms）",
    "findings": []
   }
  ],
  "notable": [
   "79 个单元 × 96 台 GB200 NVL72 整机柜（目录：每台 120 kW）= 546,048 块 GPU。",
   "引擎在设计午后看到的单个单元：IT 12,686 kW、设施 14,865 kW、PUE 1.17、每秒 28,199,753 Token。",
   "每个单元 24 台 CoolIT CHx750 CDU 以液冷带走 70% 的热量；其余由 Vertiv Liebert CW 精密空调承担。",
   "按 0.32 CNY/kWh 计一年：10,284,240 MWh、¥3,291 M；按 80 g/kWh 计 822,739 吨 CO₂。",
   "每个单元 8 类部件中有 5 类有目录价；GB200 NVL72 在目录中无报价，物料清单未计入。"
  ]
 }
}