File size: 25,939 Bytes
6acf70c
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>GCP Datacenter Accelerator Map</title>
    <script src="https://cesium.com/downloads/cesiumjs/releases/1.117/Build/Cesium/Cesium.js"></script>
    <link href="https://cesium.com/downloads/cesiumjs/releases/1.117/Build/Cesium/Widgets/widgets.css" rel="stylesheet">
    <style>
        html, body, #cesiumContainer {
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
            overflow: hidden;
            font-family: sans-serif;
        }
        #controls {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(40, 40, 40, 0.8);
            padding: 10px;
            border-radius: 5px;
            color: white;
            z-index: 1;
        }
        #controls label {
            margin-right: 5px;
        }
        #infoBox {
            position: absolute;
            bottom: 10px;
            left: 10px;
            background: rgba(40, 40, 40, 0.8);
            padding: 10px;
            border-radius: 5px;
            color: white;
            z-index: 1;
            max-width: 300px;
            display: none; /* Hidden by default */
        }
        #infoBox h3 {
            margin-top: 0;
        }
    </style>
</head>
<body>
    <div id="cesiumContainer"></div>
    <div id="controls">
        <label for="acceleratorFilter">Filter by Accelerator:</label>
        <select id="acceleratorFilter">
            <option value="all">All Accelerators</option>
        </select>
    </div>
    <div id="infoBox">
        <h3>Location Details</h3>
        <p id="locationName"></p>
        <p><strong>Region ID(s):</strong> <span id="regionId"></span></p>
        <p><strong>Zone(s):</strong> <span id="zoneId"></span></p>
        <p><strong>Available Accelerators here:</strong></p>
        <ul id="acceleratorList"></ul>
    </div>

    <script>
        // --- Data Preparation ---
        // Approximate coordinates (Latitude, Longitude)
        const locations = {
            "Council Bluffs, Iowa, USA": { lat: 41.2619, lon: -95.8608, accelerators: {} },
            "Eemshaven, Netherlands": { lat: 53.442, lon: 6.83, accelerators: {} },
            "Changhua County, Taiwan": { lat: 24.0706, lon: 120.5417, accelerators: {} },
            "Columbus, Ohio, USA": { lat: 39.9612, lon: -82.9988, accelerators: {} },
            "Dallas, Texas, USA": { lat: 32.7767, lon: -96.7970, accelerators: {} },
            "The Dalles, Oregon, USA": { lat: 45.5946, lon: -121.1787, accelerators: {} },
            "Las Vegas, Nevada, USA": { lat: 36.1699, lon: -115.1398, accelerators: {} },
            "St. Ghislain, Belgium": { lat: 50.446, lon: 3.82, accelerators: {} },
            "Jurong West, Singapore": { lat: 1.3398, lon: 103.7053, accelerators: {} },
            "Moncks Corner, South Carolina, USA": { lat: 33.1913, lon: -80.0195, accelerators: {} },
            "Ashburn, Virginia, USA": { lat: 39.0438, lon: -77.4874, accelerators: {} },
            "Tokyo, Japan": { lat: 35.6895, lon: 139.6917, accelerators: {} },
            "Sydney, Australia": { lat: -33.8688, lon: 151.2093, accelerators: {} },
            "Toronto, Ontario, Canada": { lat: 43.6532, lon: -79.3832, accelerators: {} },
            "Seoul, South Korea": { lat: 37.5665, lon: 126.9780, accelerators: {} },
            "Mumbai, India": { lat: 19.0760, lon: 72.8777, accelerators: {} },
            "London, UK": { lat: 51.5074, lon: -0.1278, accelerators: {} },
            "Frankfurt, Germany": { lat: 50.1109, lon: 8.6821, accelerators: {} },
            "Salt Lake City, Utah, USA": { lat: 40.7608, lon: -111.8910, accelerators: {} },
            "Hong Kong": { lat: 22.3193, lon: 114.1694, accelerators: {} },
            "Jakarta, Indonesia": { lat: -6.2088, lon: 106.8456, accelerators: {} },
            "Warsaw, Poland": { lat: 52.2297, lon: 21.0122, accelerators: {} },
            "Tel Aviv, Israel": { lat: 32.0853, lon: 34.7818, accelerators: {} },
            "Osasco, São Paulo, Brazil": { lat: -23.5325, lon: -46.7917, accelerators: {} },
            "Montréal, Québec, Canada": { lat: 45.5017, lon: -73.5673, accelerators: {} },
            "Los Angeles, California, USA": { lat: 34.0522, lon: -118.2437, accelerators: {} },
            "Zurich, Switzerland": { lat: 47.3769, lon: 8.5417, accelerators: {} },
            "Dammam, Saudi Arabia": { lat: 26.4207, lon: 50.0888, accelerators: {} }
        };

        const datacenterData = [
            // TPU v2
            { accelerator: "TPU v2", region: "us-central1", zones: "b, c, f", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "TPU v2", region: "europe-west4", zones: "a", location: "Eemshaven, Netherlands" },
            { accelerator: "TPU v2", region: "asia-east1", zones: "c", location: "Changhua County, Taiwan" },
            // TPU v3 (many are repeated in source, assuming unique locations for now)
            { accelerator: "TPU v3", region: "us-central1", zones: "a, b, f", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "TPU v3", region: "europe-west4", zones: "a", location: "Eemshaven, Netherlands" },
            // TPU v4
            { accelerator: "TPU v4", region: "us-central2", zones: "b", location: "Council Bluffs, Iowa, USA" }, // Note: Original data has "(?)"
            // TPU v5e
            { accelerator: "TPU v5e", region: "us-central1", zones: "a", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "TPU v5e", region: "us-east5", zones: "a, b, c", location: "Columbus, Ohio, USA" },
            { accelerator: "TPU v5e", region: "us-south1", zones: "a", location: "Dallas, Texas, USA" },
            { accelerator: "TPU v5e", region: "us-west1", zones: "c", location: "The Dalles, Oregon, USA" },
            { accelerator: "TPU v5e", region: "us-west4", zones: "a", location: "Las Vegas, Nevada, USA" },
            { accelerator: "TPU v5e", region: "europe-west1", zones: "b", location: "St. Ghislain, Belgium" },
            { accelerator: "TPU v5e", region: "asia-southeast1", zones: "b", location: "Jurong West, Singapore" },
            // TPU v5p
            { accelerator: "TPU v5p", region: "us-east5", zones: "a", location: "Columbus, Ohio, USA" },
            { accelerator: "TPU v5p", region: "europe-west4", zones: "b", location: "Eemshaven, Netherlands" },
            // TPU v6e (Data seems to have a typo for H100 A3 Mega, correcting as TPU v6e based on position)
            { accelerator: "TPU v6e", region: "us-east1", zones: "d", location: "Moncks Corner, South Carolina, USA" },
            { accelerator: "TPU v6e", region: "us-east5", zones: "b", location: "Columbus, Ohio, USA" },
            { accelerator: "TPU v6e", region: "europe-west4", zones: "a", location: "Eemshaven, Netherlands" },
            { accelerator: "TPU v6e", region: "asia-northeast1", zones: "b", location: "Tokyo, Japan" },
            // H100 A3 Mega
            { accelerator: "H100 A3 Mega", region: "us-central1", zones: "a, b*, c", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "H100 A3 Mega", region: "us-east4", zones: "a, b, c", location: "Ashburn, Virginia, USA" },
            { accelerator: "H100 A3 Mega", region: "us-west1", zones: "a, b", location: "The Dalles, Oregon, USA" },
            { accelerator: "H100 A3 Mega", region: "us-west4", zones: "a", location: "Las Vegas, Nevada, USA" },
            { accelerator: "H100 A3 Mega", region: "asia-northeast1", zones: "b", location: "Tokyo, Japan" },
            { accelerator: "H100 A3 Mega", region: "asia-southeast1", zones: "b, c", location: "Jurong West, Singapore" },
            { accelerator: "H100 A3 Mega", region: "australia-southeast1", zones: "c*", location: "Sydney, Australia" },
            { accelerator: "H100 A3 Mega", region: "europe-west1", zones: "b*, c*", location: "St. Ghislain, Belgium" },
            { accelerator: "H100 A3 Mega", region: "europe-west4", zones: "b, c", location: "Eemshaven, Netherlands" },
            // H100 A3 High
            { accelerator: "H100 A3 High", region: "us-central1", zones: "a, c", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "H100 A3 High", region: "us-east4", zones: "a, b", location: "Ashburn, Virginia, USA" },
            { accelerator: "H100 A3 High", region: "us-east5", zones: "a", location: "Columbus, Ohio, USA" },
            { accelerator: "H100 A3 High", region: "us-west1", zones: "a, b", location: "The Dalles, Oregon, USA" },
            { accelerator: "H100 A3 High", region: "us-west4", zones: "a", location: "Las Vegas, Nevada, USA" },
            { accelerator: "H100 A3 High", region: "asia-northeast1", zones: "b", location: "Tokyo, Japan" },
            { accelerator: "H100 A3 High", region: "asia-southeast1", zones: "b, c", location: "Jurong West, Singapore" },
            { accelerator: "H100 A3 High", region: "europe-west1", zones: "b*", location: "St. Ghislain, Belgium" },
            // H100 A3 Edge
            { accelerator: "H100 A3 Edge", region: "northamerica-northeast2", zones: "c", location: "Toronto, Ontario, Canada" },
            { accelerator: "H100 A3 Edge", region: "asia-northeast1", zones: "b", location: "Tokyo, Japan" },
            { accelerator: "H100 A3 Edge", region: "asia-northeast3", zones: "a, c", location: "Seoul, South Korea" },
            { accelerator: "H100 A3 Edge", region: "asia-south1", zones: "c", location: "Mumbai, India" },
            { accelerator: "H100 A3 Edge", region: "europe-west2", zones: "b", location: "London, UK" },
            { accelerator: "H100 A3 Edge", region: "europe-west3", zones: "a", location: "Frankfurt, Germany" },
            // A100 A2 Ultra
            { accelerator: "A100 A2 Ultra", region: "us-central1", zones: "a, c", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "A100 A2 Ultra", region: "us-east4", zones: "c", location: "Ashburn, Virginia, USA" },
            { accelerator: "A100 A2 Ultra", region: "us-east5", zones: "b", location: "Columbus, Ohio, USA" },
            { accelerator: "A100 A2 Ultra", region: "asia-southeast1", zones: "c", location: "Jurong West, Singapore" },
            { accelerator: "A100 A2 Ultra", region: "europe-west4", zones: "a, b, c", location: "Eemshaven, Netherlands" },
            // A100 40GB A2 Standard
            { accelerator: "A100 40GB A2 Standard", region: "us-central1", zones: "a*, b*, c*, f*", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "A100 40GB A2 Standard", region: "us-east1", zones: "b", location: "Moncks Corner, South Carolina, USA" },
            { accelerator: "A100 40GB A2 Standard", region: "us-west1", zones: "b", location: "The Dalles, Oregon, USA" },
            { accelerator: "A100 40GB A2 Standard", region: "us-west3", zones: "b", location: "Salt Lake City, Utah, USA" },
            { accelerator: "A100 40GB A2 Standard", region: "us-west4", zones: "b", location: "Las Vegas, Nevada, USA" },
            { accelerator: "A100 40GB A2 Standard", region: "asia-northeast1", zones: "a, c", location: "Tokyo, Japan" },
            { accelerator: "A100 40GB A2 Standard", region: "asia-northeast3", zones: "a, b", location: "Seoul, South Korea" },
            { accelerator: "A100 40GB A2 Standard", region: "asia-southeast1", zones: "b, c*", location: "Jurong West, Singapore" },
            { accelerator: "A100 40GB A2 Standard", region: "me-west1", zones: "a, c", location: "Tel Aviv, Israel" },
            { accelerator: "A100 40GB A2 Standard", region: "europe-west4", zones: "a*, b*", location: "Eemshaven, Netherlands" },
            // G2 (L4)
            { accelerator: "G2 (L4)", region: "us-central1", zones: "a, b, c", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "G2 (L4)", region: "us-east1", zones: "b, c, d", location: "Moncks Corner, South Carolina, USA" },
            { accelerator: "G2 (L4)", region: "us-east4", zones: "a", location: "Ashburn, Virginia, USA" },
            { accelerator: "G2 (L4)", region: "us-west1", zones: "a, b, c", location: "The Dalles, Oregon, USA" },
            { accelerator: "G2 (L4)", region: "us-west4", zones: "a, c", location: "Las Vegas, Nevada, USA" },
            { accelerator: "G2 (L4)", region: "northamerica-northeast2", zones: "a", location: "Toronto, Ontario, Canada" },
            { accelerator: "G2 (L4)", region: "asia-east1", zones: "a, b, c", location: "Changhua County, Taiwan" },
            { accelerator: "G2 (L4)", region: "asia-northeast1", zones: "a, b, c", location: "Tokyo, Japan" },
            { accelerator: "G2 (L4)", region: "asia-northeast3", zones: "a, b", location: "Seoul, South Korea" },
            { accelerator: "G2 (L4)", region: "asia-south1", zones: "a, b, c", location: "Mumbai, India" },
            { accelerator: "G2 (L4)", region: "asia-southeast1", zones: "a, b, c", location: "Jurong West, Singapore" },
            { accelerator: "G2 (L4)", region: "australia-southeast1", zones: "a", location: "Sydney, Australia" },
            { accelerator: "G2 (L4)", region: "europe-west1", zones: "b, c", location: "St. Ghislain, Belgium" },
            { accelerator: "G2 (L4)", region: "europe-west2", zones: "a, b", location: "London, UK" },
            { accelerator: "G2 (L4)", region: "europe-west3", zones: "a, b", location: "Frankfurt, Germany" },
            { accelerator: "G2 (L4)", region: "europe-west4", zones: "a, b, c", location: "Eemshaven, Netherlands" },
            { accelerator: "G2 (L4)", region: "europe-west6", zones: "b, c", location: "Zurich, Switzerland" },
            { accelerator: "G2 (L4)", region: "me-central2", zones: "a", location: "Dammam, Saudi Arabia" },
            // N1+T4
            { accelerator: "N1+T4", region: "us-central1", zones: "a, b, f", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "N1+T4", region: "us-east1", zones: "c, d", location: "Moncks Corner, South Carolina, USA" },
            { accelerator: "N1+T4", region: "us-east4", zones: "a, b", location: "Ashburn, Virginia, USA" },
            { accelerator: "N1+T4", region: "us-west1", zones: "a, b", location: "The Dalles, Oregon, USA" },
            { accelerator: "N1+T4", region: "us-west3", zones: "b", location: "Salt Lake City, Utah, USA" },
            { accelerator: "N1+T4", region: "us-west4", zones: "a, b", location: "Las Vegas, Nevada, USA" },
            { accelerator: "N1+T4", region: "northamerica-northeast1", zones: "c", location: "Montréal, Québec, Canada" },
            { accelerator: "N1+T4", region: "asia-east1", zones: "a, c", location: "Changhua County, Taiwan" },
            { accelerator: "N1+T4", region: "asia-east2", zones: "a, c", location: "Hong Kong" },
            { accelerator: "N1+T4", region: "asia-northeast1", zones: "a, c", location: "Tokyo, Japan" },
            { accelerator: "N1+T4", region: "asia-northeast3", zones: "b, c", location: "Seoul, South Korea" },
            { accelerator: "N1+T4", region: "asia-south1", zones: "a, b", location: "Mumbai, India" },
            { accelerator: "N1+T4", region: "asia-southeast1", zones: "a, b, c", location: "Jurong West, Singapore" },
            { accelerator: "N1+T4", region: "asia-southeast2", zones: "a", location: "Jakarta, Indonesia" },
            { accelerator: "N1+T4", region: "australia-southeast1", zones: "a, c", location: "Sydney, Australia" },
            { accelerator: "N1+T4", region: "europe-central2", zones: "b, c", location: "Warsaw, Poland" },
            { accelerator: "N1+T4", region: "europe-west1", zones: "b, c, d", location: "St. Ghislain, Belgium" },
            { accelerator: "N1+T4", region: "europe-west2", zones: "a, b", location: "London, UK" },
            { accelerator: "N1+T4", region: "europe-west3", zones: "b", location: "Frankfurt, Germany" },
            { accelerator: "N1+T4", region: "europe-west4", zones: "a, b, c", location: "Eemshaven, Netherlands" },
            { accelerator: "N1+T4", region: "me-west1", zones: "b, c", location: "Tel Aviv, Israel" },
            { accelerator: "N1+T4", region: "southamerica-east1", zones: "a, c", location: "Osasco, São Paulo, Brazil" },
             // N1+V100
            { accelerator: "N1+V100", region: "us-central1", zones: "a, b, c, f", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "N1+V100", region: "us-east1", zones: "c", location: "Moncks Corner, South Carolina, USA" },
            { accelerator: "N1+V100", region: "us-west1", zones: "a, b", location: "The Dalles, Oregon, USA" },
            { accelerator: "N1+V100", region: "asia-east1", zones: "c", location: "Changhua County, Taiwan" },
            { accelerator: "N1+V100", region: "europe-west4", zones: "a, b, c", location: "Eemshaven, Netherlands" },
            // N1+P100
            { accelerator: "N1+P100", region: "us-central1", zones: "c, f", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "N1+P100", region: "us-east1", zones: "b, c", location: "Moncks Corner, South Carolina, USA" },
            { accelerator: "N1+P100", region: "us-west1", zones: "a, b", location: "The Dalles, Oregon, USA" },
            { accelerator: "N1+P100", region: "asia-east1", zones: "a, c", location: "Changhua County, Taiwan" },
            { accelerator: "N1+P100", region: "australia-southeast1", zones: "c", location: "Sydney, Australia" },
            { accelerator: "N1+P100", region: "europe-west1", zones: "b, d", location: "St. Ghislain, Belgium" },
            { accelerator: "N1+P100", region: "europe-west4", zones: "a", location: "Eemshaven, Netherlands" },
            // N1+P4
            { accelerator: "N1+P4", region: "us-central1", zones: "a, c", location: "Council Bluffs, Iowa, USA" },
            { accelerator: "N1+P4", region: "us-east4", zones: "a, b, c", location: "Ashburn, Virginia, USA" },
            { accelerator: "N1+P4", region: "northamerica-northeast1", zones: "a, b, c", location: "Montréal, Québec, Canada" },
            { accelerator: "N1+P4", region: "us-west2", zones: "b, c", location: "Los Angeles, California, USA" }, // Assumed LA based on region
            { accelerator: "N1+P4", region: "asia-southeast1", zones: "b, c", location: "Jurong West, Singapore" },
            { accelerator: "N1+P4", region: "australia-southeast1", zones: "a, b", location: "Sydney, Australia" },
            { accelerator: "N1+P4", region: "europe-west4", zones: "b, c", location: "Eemshaven, Netherlands" },
        ];

        // Group accelerators by physical location for easier display and entity creation
        const groupedLocations = {};
        datacenterData.forEach(item => {
            if (!locations[item.location]) {
                console.warn(`Location data for "${item.location}" not found. Skipping.`);
                return;
            }
            if (!groupedLocations[item.location]) {
                groupedLocations[item.location] = {
                    lat: locations[item.location].lat,
                    lon: locations[item.location].lon,
                    name: item.location,
                    accelerators: [],
                    regions: new Set(), // To store unique region IDs for this location
                    zones: new Set() // To store unique zones for this location
                };
            }
            // Add accelerator if not already listed for this location
            if (!groupedLocations[item.location].accelerators.some(acc => acc.type === item.accelerator)) {
                 groupedLocations[item.location].accelerators.push({
                    type: item.accelerator,
                    region: item.region,
                    zones: item.zones
                });
            }
            // Consolidate region and zone info at the location level
            // This part is tricky because region/zones can be specific to an accelerator
            // For simplicity, we'll list all associated, but for precise info, click is needed
            groupedLocations[item.location].regions.add(item.region);
            item.zones.split(',').map(z => z.trim()).forEach(z => groupedLocations[item.location].zones.add(z));
        });


        // Cesium.Ion.defaultAccessToken = 'YOUR_CESIUM_ION_ACCESS_TOKEN'; // Only if using Cesium Ion assets

        const viewer = new Cesium.Viewer('cesiumContainer', {
            terrainProvider: Cesium.createWorldTerrain(), // Optional: adds terrain
            // imageryProvider: new Cesium.OpenStreetMapImageryProvider({ // Optional: different base map
            //     url : 'https://a.tile.openstreetmap.org/'
            // }),
            animation: false,
            timeline: false,
            geocoder: false,
            homeButton: false,
            sceneModePicker: false,
            baseLayerPicker: false,
            navigationHelpButton: false,
            fullscreenButton: false,
        });

        viewer.camera.flyTo({
            destination: Cesium.Cartesian3.fromDegrees(-95, 38, 15000000), // Fly to a general view of the US
            duration: 3
        });

        const acceleratorFilter = document.getElementById('acceleratorFilter');
        const infoBox = document.getElementById('infoBox');
        const locationNameEl = document.getElementById('locationName');
        const regionIdEl = document.getElementById('regionId');
        const zoneIdEl = document.getElementById('zoneId');
        const acceleratorListEl = document.getElementById('acceleratorList');

        const uniqueAccelerators = new Set();
        datacenterData.forEach(dc => uniqueAccelerators.add(dc.accelerator));
        uniqueAccelerators.forEach(acc => {
            const option = document.createElement('option');
            option.value = acc;
            option.textContent = acc;
            acceleratorFilter.appendChild(option);
        });

        const locationEntities = [];

        Object.values(groupedLocations).forEach(locData => {
            if (locData.lat === undefined || locData.lon === undefined) {
                console.warn(`Missing coordinates for ${locData.name}`);
                return;
            }
            const entity = viewer.entities.add({
                position: Cesium.Cartesian3.fromDegrees(locData.lon, locData.lat),
                point: {
                    pixelSize: 10,
                    color: Cesium.Color.DODGERBLUE,
                    outlineColor: Cesium.Color.WHITE,
                    outlineWidth: 2
                },
                label: {
                    text: locData.name,
                    font: '12pt monospace',
                    style: Cesium.LabelStyle.FILL_AND_OUTLINE,
                    outlineWidth: 2,
                    verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
                    pixelOffset: new Cesium.Cartesian2(0, -12)
                },
                properties: { // Custom properties
                    name: locData.name,
                    accelerators: locData.accelerators, // Array of {type, region, zones}
                    all_regions_at_location: Array.from(locData.regions).join(', '),
                    all_zones_at_location: Array.from(locData.zones).join(', ')
                }
            });
            locationEntities.push(entity);
        });


        acceleratorFilter.addEventListener('change', (event) => {
            const selectedAccelerator = event.target.value;
            infoBox.style.display = 'none'; // Hide info box on filter change

            locationEntities.forEach(entity => {
                if (selectedAccelerator === 'all') {
                    entity.show = true;
                } else {
                    // Check if any of the accelerators at this location match the filter
                    const hasAccelerator = entity.properties.accelerators.getValue().some(acc => acc.type === selectedAccelerator);
                    entity.show = hasAccelerator;
                }
            });
        });

        // Handle clicks on entities
        viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(movement) {
            const pickedObject = viewer.scene.pick(movement.position);
            infoBox.style.display = 'none'; // Hide by default

            if (Cesium.defined(pickedObject) && Cesium.defined(pickedObject.id) && Cesium.defined(pickedObject.id.properties)) {
                const properties = pickedObject.id.properties;
                const locationName = properties.name.getValue();
                const acceleratorsAtLocation = properties.accelerators.getValue(); // This is an array of {type, region, zones}
                
                locationNameEl.textContent = locationName;

                // Collect all regions and zones for *this specific picked location*
                const regionsForDisplay = new Set();
                const zonesForDisplay = new Set();
                acceleratorListEl.innerHTML = ''; // Clear previous list

                acceleratorsAtLocation.forEach(acc => {
                    regionsForDisplay.add(acc.region);
                    acc.zones.split(',').map(z => z.trim()).forEach(zone => zonesForDisplay.add(zone));
                    
                    const listItem = document.createElement('li');
                    listItem.textContent = `${acc.type} (Region: ${acc.region}, Zones: ${acc.zones})`;
                    acceleratorListEl.appendChild(listItem);
                });

                regionIdEl.textContent = Array.from(regionsForDisplay).join(', ') || 'N/A';
                zoneIdEl.textContent = Array.from(zonesForDisplay).sort().join(', ') || 'N/A';
                
                infoBox.style.display = 'block';
            }
        }, Cesium.ScreenSpaceEventType.LEFT_CLICK);

    </script>
</body>
</html>