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index.html
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| 19 |
</html>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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| 6 |
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<title>LLM Inference — Pipeline Simulator</title>
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<style>
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| 8 |
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:root {
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| 9 |
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--bg: #0d1117;
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| 10 |
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--surface: #161b22;
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| 11 |
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--border: #30363d;
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| 12 |
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--text: #c9d1d9;
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--dim: #8b949e;
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--accent: #58a6ff;
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--cpu: #f0883e;
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--ram: #3fb950;
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--gpu: #bc8cff;
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| 18 |
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--vram: #f778ba;
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| 19 |
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--prefill: #da3633;
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| 20 |
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--decode: #d29922;
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| 21 |
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--active: #58a6ff;
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}
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* { margin: 0; padding: 0; box-sizing: border-box; }
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| 24 |
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body {
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| 25 |
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background: var(--bg);
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| 26 |
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color: var(--text);
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| 27 |
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', monospace;
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| 28 |
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display: flex; justify-content: center; align-items: center;
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| 29 |
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min-height: 100vh; padding: 2rem;
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}
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| 31 |
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.sim {
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max-width: 820px; width: 100%;
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| 33 |
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background: var(--surface);
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| 34 |
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border: 1px solid var(--border);
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| 35 |
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border-radius: 12px; padding: 2rem;
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| 36 |
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}
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| 37 |
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h1 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.25rem; color: var(--text); }
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| 38 |
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.subtitle { font-size: 0.8rem; color: var(--dim); margin-bottom: 1.5rem; }
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| 39 |
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/* Pipeline */
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| 41 |
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.pipeline {
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| 42 |
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display: flex; align-items: center; justify-content: center;
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| 43 |
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gap: 0; margin-bottom: 1.5rem; flex-wrap: wrap;
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| 44 |
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}
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| 45 |
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.stage {
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| 46 |
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padding: 0.6rem 1rem; border-radius: 8px;
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| 47 |
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border: 2px solid var(--border); background: var(--bg);
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| 48 |
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font-size: 0.85rem; font-weight: 600;
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| 49 |
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text-align: center; min-width: 80px;
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transition: all 0.3s ease;
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| 51 |
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position: relative; z-index: 2;
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| 52 |
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}
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| 53 |
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.stage.active {
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| 54 |
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border-color: var(--active);
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| 55 |
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background: #1a2332;
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| 56 |
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box-shadow: 0 0 16px rgba(88,166,255,0.25);
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| 57 |
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color: var(--active);
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| 58 |
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}
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| 59 |
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.arrow {
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| 60 |
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width: 32px; height: 2px; background: var(--border);
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| 61 |
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margin: 0 4px; flex-shrink: 0; position: relative; z-index: 1;
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| 62 |
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}
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| 63 |
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.arrow::after {
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| 64 |
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content: '▸'; position: absolute; right: -6px; top: -8px;
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| 65 |
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font-size: 0.7rem; color: var(--border);
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| 66 |
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}
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| 67 |
+
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| 68 |
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/* Decode loop indicator */
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| 69 |
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.decode-loop {
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| 70 |
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display: flex; align-items: center; gap: 6px;
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| 71 |
+
margin-top: 0.3rem; justify-content: center;
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| 72 |
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font-size: 0.7rem; color: var(--dim);
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| 73 |
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}
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| 74 |
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.loop-arrow {
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| 75 |
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width: 20px; height: 2px; background: var(--dim);
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| 76 |
+
}
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| 77 |
+
.loop-count {
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| 78 |
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padding: 2px 8px; border: 1px solid var(--border);
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| 79 |
+
border-radius: 4px; font-size: 0.7rem;
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| 80 |
+
}
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| 81 |
+
.loop-count.active {
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| 82 |
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border-color: var(--decode); color: var(--decode);
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| 83 |
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background: rgba(210,153,34,0.1);
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| 84 |
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}
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| 85 |
+
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| 86 |
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/* Resources */
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| 87 |
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.resources {
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| 88 |
+
display: grid; grid-template-columns: repeat(4, 1fr);
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| 89 |
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gap: 1rem; margin-bottom: 1.5rem;
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| 90 |
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}
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| 91 |
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.res {
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| 92 |
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border: 2px solid var(--border); border-radius: 8px;
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| 93 |
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padding: 0.6rem 0.4rem; background: var(--bg); text-align: center;
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| 94 |
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transition: all 0.3s ease;
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| 95 |
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}
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| 96 |
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.res-label {
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| 97 |
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font-size: 0.7rem; text-transform: uppercase;
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| 98 |
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letter-spacing: 0.05em; margin-bottom: 0.15rem;
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| 99 |
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}
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| 100 |
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.res-status { font-size: 0.65rem; color: var(--dim); }
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| 101 |
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.res.cpu .res-label { color: var(--cpu); }
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| 102 |
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.res.ram .res-label { color: var(--ram); }
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| 103 |
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.res.gpu .res-label { color: var(--gpu); }
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| 104 |
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.res.vram .res-label { color: var(--vram); }
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| 105 |
+
.res.active.cpu { border-color: var(--cpu); box-shadow: 0 0 10px rgba(240,136,62,0.25); }
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| 106 |
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.res.active.ram { border-color: var(--ram); box-shadow: 0 0 10px rgba(63,185,80,0.25); }
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| 107 |
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.res.active.gpu { border-color: var(--gpu); box-shadow: 0 0 10px rgba(188,140,255,0.25); }
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| 108 |
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.res.active.vram { border-color: var(--vram); box-shadow: 0 0 10px rgba(247,120,186,0.25); }
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| 109 |
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.res.active .res-status { color: inherit; }
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| 110 |
+
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| 111 |
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/* Token display */
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| 112 |
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.token-area {
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| 113 |
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background: var(--bg); border: 1px solid var(--border);
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| 114 |
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border-radius: 8px; padding: 1rem; margin-bottom: 1.5rem;
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| 115 |
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min-height: 80px;
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| 116 |
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}
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| 117 |
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.token-label {
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| 118 |
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font-size: 0.65rem; text-transform: uppercase;
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| 119 |
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letter-spacing: 0.05em; color: var(--dim); margin-bottom: 0.5rem;
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| 120 |
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}
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| 121 |
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.token-row {
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| 122 |
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display: flex; gap: 6px; flex-wrap: wrap; align-items: center;
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| 123 |
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}
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| 124 |
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.token {
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| 125 |
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padding: 4px 10px; border-radius: 6px; font-size: 0.8rem;
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| 126 |
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border: 1px solid var(--border); background: var(--surface);
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| 127 |
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font-family: monospace; transition: all 0.3s ease;
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| 128 |
+
}
|
| 129 |
+
.token.prefill { border-color: var(--prefill); background: rgba(218,54,51,0.1); }
|
| 130 |
+
.token.decode { border-color: var(--decode); background: rgba(210,153,34,0.1); }
|
| 131 |
+
.token.new { border-color: var(--active); background: rgba(88,166,255,0.1); animation: pulse 0.6s ease; }
|
| 132 |
+
.token.cached { border-color: var(--ram); opacity: 0.6; font-size: 0.7rem; }
|
| 133 |
+
@keyframes pulse {
|
| 134 |
+
0%,100% { transform: scale(1); }
|
| 135 |
+
50% { transform: scale(1.08); }
|
| 136 |
+
}
|
| 137 |
+
|
| 138 |
+
/* KV cache */
|
| 139 |
+
.kvcache {
|
| 140 |
+
background: var(--bg); border: 1px solid var(--border);
|
| 141 |
+
border-radius: 8px; padding: 0.75rem 1rem; margin-bottom: 1.5rem;
|
| 142 |
+
display: flex; align-items: center; gap: 0.75rem;
|
| 143 |
+
}
|
| 144 |
+
.kvcache-label {
|
| 145 |
+
font-size: 0.65rem; text-transform: uppercase;
|
| 146 |
+
letter-spacing: 0.05em; color: var(--dim); white-space: nowrap;
|
| 147 |
+
}
|
| 148 |
+
.kvcache-entries {
|
| 149 |
+
display: flex; gap: 4px; flex-wrap: wrap;
|
| 150 |
+
}
|
| 151 |
+
.kv-cell {
|
| 152 |
+
width: 14px; height: 14px; border-radius: 3px;
|
| 153 |
+
border: 1px solid var(--border); background: var(--surface);
|
| 154 |
+
transition: all 0.3s ease;
|
| 155 |
+
}
|
| 156 |
+
.kv-cell.filled { background: var(--vram); border-color: var(--vram); }
|
| 157 |
+
|
| 158 |
+
/* Status */
|
| 159 |
+
.status {
|
| 160 |
+
font-size: 0.8rem; color: var(--text); margin-bottom: 1rem;
|
| 161 |
+
text-align: center; min-height: 1.2em;
|
| 162 |
+
}
|
| 163 |
+
.status .highlight { color: var(--active); }
|
| 164 |
+
|
| 165 |
+
/* Controls */
|
| 166 |
+
.controls {
|
| 167 |
+
display: flex; gap: 0.75rem; justify-content: center;
|
| 168 |
+
}
|
| 169 |
+
button {
|
| 170 |
+
padding: 0.5rem 1.25rem; border-radius: 6px; border: 1px solid var(--border);
|
| 171 |
+
background: var(--bg); color: var(--text); font-size: 0.8rem;
|
| 172 |
+
cursor: pointer; font-family: inherit; transition: all 0.2s;
|
| 173 |
+
}
|
| 174 |
+
button:hover { border-color: var(--dim); background: #1c2128; }
|
| 175 |
+
button.primary {
|
| 176 |
+
border-color: var(--accent); color: var(--accent);
|
| 177 |
+
background: rgba(88,166,255,0.1);
|
| 178 |
+
}
|
| 179 |
+
button.primary:hover { background: rgba(88,166,255,0.2); }
|
| 180 |
+
button:disabled { opacity: 0.4; cursor: not-allowed; }
|
| 181 |
+
|
| 182 |
+
/* Step indicator dots */
|
| 183 |
+
.steps {
|
| 184 |
+
display: flex; gap: 6px; justify-content: center; margin-bottom: 1rem;
|
| 185 |
+
}
|
| 186 |
+
.step-dot {
|
| 187 |
+
width: 8px; height: 8px; border-radius: 50%;
|
| 188 |
+
background: var(--border); transition: background 0.3s;
|
| 189 |
+
}
|
| 190 |
+
.step-dot.done { background: var(--accent); }
|
| 191 |
+
.step-dot.current { background: var(--accent); box-shadow: 0 0 6px var(--accent); }
|
| 192 |
+
</style>
|
| 193 |
+
</head>
|
| 194 |
+
<body>
|
| 195 |
+
<div class="sim">
|
| 196 |
+
<h1>LLM Inference Pipeline</h1>
|
| 197 |
+
<p class="subtitle">Prompt: <strong>"The cat sat"</strong> — watch how it flows through the system</p>
|
| 198 |
+
|
| 199 |
+
<!-- Step dots -->
|
| 200 |
+
<div class="steps" id="stepDots">
|
| 201 |
+
<div class="step-dot"></div>
|
| 202 |
+
<div class="step-dot"></div>
|
| 203 |
+
<div class="step-dot"></div>
|
| 204 |
+
<div class="step-dot"></div>
|
| 205 |
+
<div class="step-dot"></div>
|
| 206 |
+
</div>
|
| 207 |
+
|
| 208 |
+
<!-- Pipeline stages -->
|
| 209 |
+
<div class="pipeline">
|
| 210 |
+
<div class="stage" id="s_input">📥 Input</div>
|
| 211 |
+
<div class="arrow"></div>
|
| 212 |
+
<div class="stage" id="s_tokenize">🔤 Tokenize</div>
|
| 213 |
+
<div class="arrow"></div>
|
| 214 |
+
<div class="stage" id="s_prefill">⚡ Prefill</div>
|
| 215 |
+
<div class="arrow"></div>
|
| 216 |
+
<div class="stage" id="s_decode">🔄 Decode</div>
|
| 217 |
+
<div class="arrow"></div>
|
| 218 |
+
<div class="stage" id="s_output">📤 Output</div>
|
| 219 |
+
</div>
|
| 220 |
+
<div class="decode-loop" id="loopInfo">
|
| 221 |
+
<span class="loop-arrow"></span>
|
| 222 |
+
<span>loop</span>
|
| 223 |
+
<span class="loop-count" id="loopCount">0 / 3</span>
|
| 224 |
+
</div>
|
| 225 |
+
|
| 226 |
+
<!-- Resources -->
|
| 227 |
+
<div class="resources">
|
| 228 |
+
<div class="res cpu" id="resCpu">
|
| 229 |
+
<div class="res-label">CPU</div>
|
| 230 |
+
<div class="res-status">idle</div>
|
| 231 |
+
</div>
|
| 232 |
+
<div class="res ram" id="resRam">
|
| 233 |
+
<div class="res-label">RAM</div>
|
| 234 |
+
<div class="res-status">idle</div>
|
| 235 |
+
</div>
|
| 236 |
+
<div class="res gpu" id="resGpu">
|
| 237 |
+
<div class="res-label">GPU Compute</div>
|
| 238 |
+
<div class="res-status">idle</div>
|
| 239 |
+
</div>
|
| 240 |
+
<div class="res vram" id="resVram">
|
| 241 |
+
<div class="res-label">VRAM / KV Cache</div>
|
| 242 |
+
<div class="res-status">idle</div>
|
| 243 |
+
</div>
|
| 244 |
+
</div>
|
| 245 |
+
|
| 246 |
+
<!-- Tokens -->
|
| 247 |
+
<div class="token-area">
|
| 248 |
+
<div class="token-label">Tokens</div>
|
| 249 |
+
<div class="token-row" id="tokenRow">
|
| 250 |
+
<span style="color:var(--dim); font-size:0.8rem;">Waiting for input...</span>
|
| 251 |
+
</div>
|
| 252 |
+
</div>
|
| 253 |
+
|
| 254 |
+
<!-- KV Cache -->
|
| 255 |
+
<div class="kvcache">
|
| 256 |
+
<span class="kvcache-label">KV Cache entries:</span>
|
| 257 |
+
<span class="kvcache-entries" id="kvEntries">
|
| 258 |
+
<span style="color:var(--dim); font-size:0.75rem;">empty</span>
|
| 259 |
+
</span>
|
| 260 |
+
</div>
|
| 261 |
+
|
| 262 |
+
<!-- Status -->
|
| 263 |
+
<div class="status" id="status">Click <span class="highlight">Auto</span> to run the full pipeline, or use <span class="highlight">Forward</span> / <span class="highlight">Back</span> to walk through one stage at a time.</div>
|
| 264 |
+
|
| 265 |
+
<!-- Controls -->
|
| 266 |
+
<div class="controls">
|
| 267 |
+
<button class="primary" id="btnAuto" onclick="toggleAuto()">Auto ▶</button>
|
| 268 |
+
<button id="btnBack" onclick="back()">◀ Back</button>
|
| 269 |
+
<button id="btnStep" onclick="step()">Forward ▶</button>
|
| 270 |
+
<button id="btnReset" onclick="reset()">↺ Reset</button>
|
| 271 |
+
</div>
|
| 272 |
+
</div>
|
| 273 |
+
|
| 274 |
+
<script>
|
| 275 |
+
// --- State ---
|
| 276 |
+
const TOKENS = [
|
| 277 |
+
{ id: 576, text: 'The' },
|
| 278 |
+
{ id: 3797, text: ' cat' },
|
| 279 |
+
{ id: 7236, text: ' sat' },
|
| 280 |
+
];
|
| 281 |
+
const OUTPUT = [
|
| 282 |
+
{ id: 389, text: ' on' },
|
| 283 |
+
{ id: 278, text: ' the' },
|
| 284 |
+
{ id: 3098, text: ' mat' },
|
| 285 |
+
];
|
| 286 |
+
|
| 287 |
+
const TOTAL_STEPS = 7; // 0:idle, 1:input, 2:tokenize, 3:prefill, 4-6:decode steps
|
| 288 |
+
let currentStep = 0;
|
| 289 |
+
let autoTimer = null;
|
| 290 |
+
let decodeIdx = 0;
|
| 291 |
+
|
| 292 |
+
// --- DOM refs ---
|
| 293 |
+
const els = {
|
| 294 |
+
s_input: document.getElementById('s_input'),
|
| 295 |
+
s_tokenize: document.getElementById('s_tokenize'),
|
| 296 |
+
s_prefill: document.getElementById('s_prefill'),
|
| 297 |
+
s_decode: document.getElementById('s_decode'),
|
| 298 |
+
s_output: document.getElementById('s_output'),
|
| 299 |
+
resCpu: document.getElementById('resCpu'),
|
| 300 |
+
resRam: document.getElementById('resRam'),
|
| 301 |
+
resGpu: document.getElementById('resGpu'),
|
| 302 |
+
resVram: document.getElementById('resVram'),
|
| 303 |
+
tokenRow: document.getElementById('tokenRow'),
|
| 304 |
+
kvEntries: document.getElementById('kvEntries'),
|
| 305 |
+
status: document.getElementById('status'),
|
| 306 |
+
loopCount: document.getElementById('loopCount'),
|
| 307 |
+
loopInfo: document.getElementById('loopInfo'),
|
| 308 |
+
btnAuto: document.getElementById('btnAuto'),
|
| 309 |
+
btnStep: document.getElementById('btnStep'),
|
| 310 |
+
btnBack: document.getElementById('btnBack'),
|
| 311 |
+
stepDots: document.getElementById('stepDots').children,
|
| 312 |
+
};
|
| 313 |
+
|
| 314 |
+
function clearActive() {
|
| 315 |
+
Object.values(els).forEach(el => {
|
| 316 |
+
if (el && el.classList) el.classList.remove('active');
|
| 317 |
+
});
|
| 318 |
+
}
|
| 319 |
+
|
| 320 |
+
function setActiveResources(names) {
|
| 321 |
+
const map = { cpu: els.resCpu, ram: els.resRam, gpu: els.resGpu, vram: els.resVram };
|
| 322 |
+
for (const [key, el] of Object.entries(map)) {
|
| 323 |
+
if (names.includes(key)) {
|
| 324 |
+
el.classList.add('active');
|
| 325 |
+
el.querySelector('.res-status').textContent = 'active';
|
| 326 |
+
} else {
|
| 327 |
+
el.classList.remove('active');
|
| 328 |
+
el.querySelector('.res-status').textContent = 'idle';
|
| 329 |
+
}
|
| 330 |
+
}
|
| 331 |
+
}
|
| 332 |
+
|
| 333 |
+
function setStatus(msg) { els.status.innerHTML = msg; }
|
| 334 |
+
function setTokens(html) { els.tokenRow.innerHTML = html; }
|
| 335 |
+
function setKV(html) { els.kvEntries.innerHTML = html; }
|
| 336 |
+
|
| 337 |
+
function setDots(n) {
|
| 338 |
+
for (let i = 0; i < els.stepDots.length; i++) {
|
| 339 |
+
els.stepDots[i].classList.remove('done', 'current');
|
| 340 |
+
if (i < n) els.stepDots[i].classList.add('done');
|
| 341 |
+
if (i === n) els.stepDots[i].classList.add('current');
|
| 342 |
+
}
|
| 343 |
+
}
|
| 344 |
+
|
| 345 |
+
// --- Step implementations ---
|
| 346 |
+
function doIdle() {
|
| 347 |
+
clearActive();
|
| 348 |
+
setActiveResources([]);
|
| 349 |
+
setTokens('<span style="color:var(--dim); font-size:0.8rem;">Waiting for input...</span>');
|
| 350 |
+
setKV('<span style="color:var(--dim); font-size:0.75rem;">empty</span>');
|
| 351 |
+
setStatus('Click <span class="highlight">Auto</span> to run the full pipeline, or use <span class="highlight">Forward</span> / <span class="highlight">Back</span> to walk through one stage at a time.');
|
| 352 |
+
els.loopInfo.style.opacity = '0.3';
|
| 353 |
+
els.loopCount.textContent = '0 / ' + OUTPUT.length;
|
| 354 |
+
els.loopCount.classList.remove('active');
|
| 355 |
+
setDots(0);
|
| 356 |
+
}
|
| 357 |
+
|
| 358 |
+
function doInput() {
|
| 359 |
+
clearActive();
|
| 360 |
+
els.s_input.classList.add('active');
|
| 361 |
+
setActiveResources(['cpu']);
|
| 362 |
+
setTokens('<span style="color:var(--text); font-size:1rem; font-style:italic;">"The cat sat"</span>');
|
| 363 |
+
setKV('<span style="color:var(--dim); font-size:0.75rem;">empty</span>');
|
| 364 |
+
setStatus('📥 <span class="highlight">Input</span> — user submits the prompt text.<br><span style="color:var(--dim); font-size:0.75rem;">CPU & RAM hold the raw string. GPU is idle.</span>');
|
| 365 |
+
els.loopInfo.style.opacity = '0.3';
|
| 366 |
+
setDots(1);
|
| 367 |
+
}
|
| 368 |
+
|
| 369 |
+
function doTokenize() {
|
| 370 |
+
clearActive();
|
| 371 |
+
els.s_tokenize.classList.add('active');
|
| 372 |
+
setActiveResources(['cpu', 'ram']);
|
| 373 |
+
let html = '';
|
| 374 |
+
TOKENS.forEach(t => {
|
| 375 |
+
html += `<span class="token" style="border-color:var(--cpu);">${t.id}</span>`;
|
| 376 |
+
});
|
| 377 |
+
setTokens(html + '<span style="color:var(--dim); margin-left:6px; font-size:0.7rem;">← token IDs</span>');
|
| 378 |
+
setKV('<span style="color:var(--dim); font-size:0.75rem;">empty</span>');
|
| 379 |
+
setStatus('🔤 <span class="highlight">Tokenize</span> — CPU converts text to token IDs: "The cat sat" → [576, 3797, 7236]<br><span style="color:var(--dim); font-size:0.75rem;">This is a fast CPU-bound step. Tokenizer runs on CPU.</span>');
|
| 380 |
+
els.loopInfo.style.opacity = '0.3';
|
| 381 |
+
setDots(2);
|
| 382 |
+
}
|
| 383 |
+
|
| 384 |
+
function doPrefill() {
|
| 385 |
+
clearActive();
|
| 386 |
+
els.s_prefill.classList.add('active');
|
| 387 |
+
setActiveResources(['gpu', 'vram']);
|
| 388 |
+
let html = '';
|
| 389 |
+
TOKENS.forEach(t => {
|
| 390 |
+
html += `<span class="token prefill">${t.id}<br><small>${t.text}</small></span>`;
|
| 391 |
+
});
|
| 392 |
+
html += '<span style="font-size:1.5rem; margin:0 4px;">→</span>';
|
| 393 |
+
html += `<span class="token new">${OUTPUT[0].id}<br><small>${OUTPUT[0].text}</small></span>`;
|
| 394 |
+
// V
|
| 395 |
+
setTokens(html);
|
| 396 |
+
// KV cache built
|
| 397 |
+
let kvHtml = '';
|
| 398 |
+
TOKENS.forEach((_, i) => {
|
| 399 |
+
kvHtml += `<div class="kv-cell filled" title="K${i+1} V${i+1}"></div>`;
|
| 400 |
+
});
|
| 401 |
+
setKV(kvHtml + '<span style="color:var(--dim); margin-left:4px; font-size:0.7rem;">3 entries built</span>');
|
| 402 |
+
setStatus('⚡ <span class="highlight">Prefill</span> — all 3 tokens run through the model <em>simultaneously</em>.<br><span style="color:var(--dim); font-size:0.75rem;">GPU compute spikes. KV cache is built (stored in VRAM). First output token appears: " on".<br><strong>Compute-bound:</strong> GPU is doing heavy matrix math.</span>');
|
| 403 |
+
els.loopInfo.style.opacity = '0.3';
|
| 404 |
+
els.loopCount.textContent = '1 / ' + OUTPUT.length;
|
| 405 |
+
setDots(3);
|
| 406 |
+
}
|
| 407 |
+
|
| 408 |
+
function doDecodeStep(idx) {
|
| 409 |
+
clearActive();
|
| 410 |
+
els.s_decode.classList.add('active');
|
| 411 |
+
|
| 412 |
+
// During decode, GPU is busy but more moderate (memory-bound)
|
| 413 |
+
setActiveResources(['gpu', 'vram']);
|
| 414 |
+
|
| 415 |
+
// Show all tokens so far
|
| 416 |
+
let html = '';
|
| 417 |
+
// Input tokens (cached)
|
| 418 |
+
TOKENS.forEach(t => {
|
| 419 |
+
html += `<span class="token cached">${t.id}</span>`;
|
| 420 |
+
});
|
| 421 |
+
// Previously generated output tokens (cached)
|
| 422 |
+
for (let i = 0; i < idx; i++) {
|
| 423 |
+
html += `<span class="token cached">${OUTPUT[i].id}</span>`;
|
| 424 |
+
}
|
| 425 |
+
// New token being generated
|
| 426 |
+
html += `<span class="token new">${OUTPUT[idx].id}<br><small>${OUTPUT[idx].text}</small></span>`;
|
| 427 |
+
// Show what's being read
|
| 428 |
+
html += '<span style="color:var(--dim); margin-left:8px; font-size:0.7rem;">← reads KV cache</span>';
|
| 429 |
+
setTokens(html);
|
| 430 |
+
|
| 431 |
+
// KV cache grows
|
| 432 |
+
let kvHtml = '';
|
| 433 |
+
const totalKV = TOKENS.length + idx;
|
| 434 |
+
for (let i = 0; i < totalKV; i++) {
|
| 435 |
+
kvHtml += `<div class="kv-cell filled" title="K${i+1} V${i+1}"></div>`;
|
| 436 |
+
}
|
| 437 |
+
setKV(kvHtml + `<span style="color:var(--dim); margin-left:4px; font-size:0.7rem;">${totalKV} entries — growing each step</span>`);
|
| 438 |
+
|
| 439 |
+
const tokenNum = idx + 1;
|
| 440 |
+
setStatus('🔄 <span class="highlight">Decode step ' + tokenNum + '/' + OUTPUT.length + '</span> — generating token: <span style="color:var(--active);">"' + OUTPUT[idx].text.trim() + '"</span><br><span style="color:var(--dim); font-size:0.75rem;">Only the NEW token needs fresh GPU compute. All previous tokens reuse their KV cache entries.<br><strong>Memory-bound:</strong> GPU spends most time reading the growing KV cache from VRAM.</span>');
|
| 441 |
+
|
| 442 |
+
els.loopInfo.style.opacity = '1';
|
| 443 |
+
els.loopCount.textContent = tokenNum + ' / ' + OUTPUT.length;
|
| 444 |
+
els.loopCount.classList.add('active');
|
| 445 |
+
els.loopInfo.querySelector('.loop-arrow').style.background = 'var(--decode)';
|
| 446 |
+
setDots(3 + idx);
|
| 447 |
+
}
|
| 448 |
+
|
| 449 |
+
function doDetokenize() {
|
| 450 |
+
clearActive();
|
| 451 |
+
els.s_output.classList.add('active');
|
| 452 |
+
setActiveResources(['cpu']);
|
| 453 |
+
|
| 454 |
+
// Show all tokens
|
| 455 |
+
let html = '';
|
| 456 |
+
TOKENS.forEach(t => { html += `<span class="token cached">${t.id}</span>`; });
|
| 457 |
+
OUTPUT.forEach(t => { html += `<span class="token cached">${t.id}</span>`; });
|
| 458 |
+
html += '<span style="font-size:1.5rem; margin:0 4px;">→</span>';
|
| 459 |
+
html += '<span style="color:var(--ram); font-size:1rem; font-style:italic;">"The cat sat on the mat"</span>';
|
| 460 |
+
setTokens(html);
|
| 461 |
+
|
| 462 |
+
// Final KV cache
|
| 463 |
+
let kvHtml = '';
|
| 464 |
+
for (let i = 0; i < TOKENS.length + OUTPUT.length; i++) {
|
| 465 |
+
kvHtml += `<div class="kv-cell filled" title="K${i+1} V${i+1}"></div>`;
|
| 466 |
+
}
|
| 467 |
+
setKV(kvHtml + '<span style="color:var(--dim); margin-left:4px; font-size:0.7rem;">6 total entries (freed after request)</span>');
|
| 468 |
+
|
| 469 |
+
setStatus('📤 <span class="highlight">Detokenize & Output</span> — CPU converts token IDs back to text.<br><span style="color:var(--dim); font-size:0.75rem;">Final: "The cat sat on the mat" — KV cache is freed, GPU goes idle.</span>');
|
| 470 |
+
els.loopInfo.style.opacity = '0.3';
|
| 471 |
+
setDots(6);
|
| 472 |
+
}
|
| 473 |
+
|
| 474 |
+
// --- Step state machine ---
|
| 475 |
+
function step() {
|
| 476 |
+
if (autoTimer) return; // don't mix auto + manual
|
| 477 |
+
|
| 478 |
+
// step numbering:
|
| 479 |
+
// 0 idle, 1 input, 2 tokenize, 3 prefill, 4 decode[0], 5 decode[1], 6 decode[2], 7 detokenize
|
| 480 |
+
// idle returned by reset
|
| 481 |
+
const actions = [doIdle, doInput, doTokenize, doPrefill, ...OUTPUT.map((_, i) => () => doDecodeStep(i)), doDetokenize];
|
| 482 |
+
|
| 483 |
+
if (currentStep < actions.length - 1) {
|
| 484 |
+
currentStep++;
|
| 485 |
+
actions[currentStep]();
|
| 486 |
+
}
|
| 487 |
+
|
| 488 |
+
if (currentStep >= actions.length - 1) {
|
| 489 |
+
els.btnStep.disabled = true;
|
| 490 |
+
}
|
| 491 |
+
els.btnBack.disabled = (currentStep <= 0);
|
| 492 |
+
}
|
| 493 |
+
|
| 494 |
+
function back() {
|
| 495 |
+
if (autoTimer) return;
|
| 496 |
+
if (currentStep <= 0) return;
|
| 497 |
+
|
| 498 |
+
const actions = [doIdle, doInput, doTokenize, doPrefill, ...OUTPUT.map((_, i) => () => doDecodeStep(i)), doDetokenize];
|
| 499 |
+
|
| 500 |
+
currentStep--;
|
| 501 |
+
actions[currentStep]();
|
| 502 |
+
|
| 503 |
+
els.btnStep.disabled = false;
|
| 504 |
+
els.btnBack.disabled = (currentStep <= 0);
|
| 505 |
+
}
|
| 506 |
+
|
| 507 |
+
function reset() {
|
| 508 |
+
stopAuto();
|
| 509 |
+
currentStep = 0;
|
| 510 |
+
decodeIdx = 0;
|
| 511 |
+
doIdle();
|
| 512 |
+
els.btnStep.disabled = false;
|
| 513 |
+
els.btnBack.disabled = true;
|
| 514 |
+
}
|
| 515 |
+
|
| 516 |
+
// --- Auto play ---
|
| 517 |
+
function toggleAuto() {
|
| 518 |
+
if (autoTimer) { stopAuto(); return; }
|
| 519 |
+
|
| 520 |
+
reset();
|
| 521 |
+
els.btnAuto.textContent = '⏸ Stop';
|
| 522 |
+
els.btnAuto.classList.remove('primary');
|
| 523 |
+
els.btnStep.disabled = true;
|
| 524 |
+
els.btnBack.disabled = true;
|
| 525 |
+
|
| 526 |
+
const actions = [doIdle, doInput, doTokenize, doPrefill, ...OUTPUT.map((_, i) => () => doDecodeStep(i)), doDetokenize];
|
| 527 |
+
|
| 528 |
+
let i = 0;
|
| 529 |
+
function tick() {
|
| 530 |
+
if (i >= actions.length) { stopAuto(); return; }
|
| 531 |
+
actions[i]();
|
| 532 |
+
currentStep = i;
|
| 533 |
+
i++;
|
| 534 |
+
|
| 535 |
+
// Adjust timing: longer pauses for prefill/decode to let viewer read
|
| 536 |
+
let delay = 1200;
|
| 537 |
+
if (i === 4) delay = 1500; // prefill — let it sink in
|
| 538 |
+
if (i >= 5 && i <= actions.length - 2) delay = 1800; // decode steps — slower
|
| 539 |
+
|
| 540 |
+
autoTimer = setTimeout(tick, delay);
|
| 541 |
+
}
|
| 542 |
+
// Small initial delay so viewer sees the fresh start
|
| 543 |
+
autoTimer = setTimeout(tick, 400);
|
| 544 |
+
}
|
| 545 |
+
|
| 546 |
+
function stopAuto() {
|
| 547 |
+
if (autoTimer) clearTimeout(autoTimer);
|
| 548 |
+
autoTimer = null;
|
| 549 |
+
els.btnAuto.textContent = '▶ Auto';
|
| 550 |
+
els.btnAuto.classList.add('primary');
|
| 551 |
+
if (currentStep < 7) els.btnStep.disabled = false;
|
| 552 |
+
els.btnBack.disabled = (currentStep <= 0);
|
| 553 |
+
}
|
| 554 |
+
|
| 555 |
+
// --- Init ---
|
| 556 |
+
doIdle();
|
| 557 |
+
</script>
|
| 558 |
+
</body>
|
| 559 |
</html>
|