File size: 15,624 Bytes
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<style>
:root {
--bg: #ffffff; --fg: #1b1f24; --muted: #6b7280; --panel: #f6f8fa; --grid: #e5e7eb;
--embed: #dbeafe; --embed-s: #3b82f6;
--attn: #cffafe; --attn-s: #06b6d4;
--mamba: #dcfce7; --mamba-s: #22c55e;
--linattn: #fce7f3; --linattn-s: #ec4899;
--recur: #ede9fe; --recur-s: #8b5cf6;
--moe: #ffedd5; --moe-s: #f97316;
--mlp: #ede9fe; --mlp-s: #8b5cf6;
--norm: #e5e7eb; --norm-s: #9ca3af;
--head: #fee2e2; --head-s: #ef4444;
--config: #f1f5f9; --config-s: #64748b;
--rope: #fef9c3; --rope-s: #eab308;
--layer: #f8fafc; --layer-s: #cbd5e1;
--io: #f1f5f9; --io-s: #94a3b8;
--soft: #fae8ff; --soft-s: #c026d3;
--add: #ffffff; --add-s: #475569;
--block-s: #94a3b8;
--residual: #f59e0b;
--added: #16a34a; --over: #d97706; --deleted: #dc2626;
--lt-full: #06b6d4; --lt-sliding: #3b82f6; --lt-chunked: #8b5cf6;
--lt-compressed: #f97316; --lt-heavy: #dc2626; --lt-linear: #ec4899; --lt-mamba: #22c55e;
--cell-on: #0ea5e9; --cell-off: #e5e7eb;
--vision: #dcfce7; --vision-s: #16a34a; --audio: #fae8ff; --audio-s: #c026d3;
--proj: #fef3c7; --proj-s: #d97706; --xattn: #db2777;
--conv: #d1fae5; --conv-s: #10b981; --act: #ecfccb; --act-s: #65a30d;
--pool: #e0f2fe; --pool-s: #0284c7; --quant: #fae8ff; --quant-s: #c026d3;
}
@media (prefers-color-scheme: dark) {
:root {
--bg: #0d1117; --fg: #e6edf3; --muted: #8b949e; --panel: #161b22; --grid: #30363d;
--embed: #172554; --attn: #083344; --mamba: #052e16; --linattn: #500724;
--recur: #2e1065; --moe: #431407; --mlp: #2e1065; --norm: #21262d; --head: #450a0a;
--config: #1e293b; --rope: #422006; --layer: #161b22;
--conv: #022c22; --act: #1a2e05; --pool: #082f49; --quant: #3b0764; --proj: #422006;
--io: #1e293b; --soft: #3b0764; --add: #0d1117; --cell-off: #21262d;
}
}
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.c-conv { fill: var(--conv); stroke: var(--conv-s); }
.c-act { fill: var(--act); stroke: var(--act-s); }
.c-pool { fill: var(--pool); stroke: var(--pool-s); }
.c-quant { fill: var(--quant); stroke: var(--quant-s); }
.c-layer { fill: var(--layer); stroke: var(--layer-s); }
.c-io { fill: var(--io); stroke: var(--io-s); }
.c-soft { fill: var(--soft); stroke: var(--soft-s); }
.c-add { fill: var(--add); stroke: var(--add-s); }
.c-block { fill: none; stroke: var(--block-s); stroke-width: 1.6; stroke-dasharray: 7 5; }
.c-lt-full { fill: var(--lt-full); stroke: var(--lt-full); }
.c-lt-sliding { fill: var(--lt-sliding); stroke: var(--lt-sliding); }
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.c-lt-heavy { fill: var(--lt-heavy); stroke: var(--lt-heavy); }
.c-lt-linear { fill: var(--lt-linear); stroke: var(--lt-linear); }
.c-lt-mamba { fill: var(--lt-mamba); stroke: var(--lt-mamba); }
.cell-on { fill: var(--cell-on); }
.cell-off { fill: var(--cell-off); }
.grid-frame { fill: none; stroke: var(--grid); stroke-width: 1; }
.mask-bg { fill: var(--cell-off); }
.mask-on { fill: #22c55e; }
.mask-div { stroke: var(--fg); stroke-width: 1.5; stroke-dasharray: 3 2; }
.c-vision { fill: var(--vision); stroke: var(--vision-s); }
.c-audio { fill: var(--audio); stroke: var(--audio-s); }
.c-proj { fill: var(--proj); stroke: var(--proj-s); }
.c-sub { fill: var(--bg); stroke: var(--block-s); stroke-width: 1.2; }
.sec-h { font-size: 12px; font-weight: 700; }
.sec-hbar { fill: var(--bg); opacity: 0.82; }
.residual.xattn { stroke: var(--xattn); stroke-width: 2.4; }
.ghost { opacity: 0.32; stroke-dasharray: 4 3; }
.ch-added rect.b, rect.b.ch-added { stroke: var(--added); stroke-width: 3.2; }
.ch-over rect.b, rect.b.ch-over { stroke: var(--over); stroke-width: 3.2; }
.ch-deleted rect.b, rect.b.ch-deleted { stroke: var(--deleted); stroke-width: 3.2; }
.edge { stroke: var(--grid); stroke-width: 2; }
.flow { stroke: var(--grid); stroke-width: 2; fill: none; }
.residual { stroke: var(--residual); stroke-width: 2; fill: none; }
.rope { stroke: var(--rope-s); stroke-width: 2.2; fill: none; }
.xattn { stroke: var(--xattn); stroke-width: 2.4; fill: none; }
.cell-idx { font-size: 9px; fill: #ffffff; font-weight: 600; }
.sky { fill: #bae6fd; } .sun { fill: #fde047; } .hill { fill: #4ade80; }
</style>
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<rect class="bg" x="0" y="0" width="1200" height="960"/>
<text class="title" x="24" y="34">bit</text>
<text class="subtitle" x="24" y="54">BitModel · forward data flow (shapes from a dummy input pass)</text>
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<g class=""><rect class="b c-sub " x="310" y="377" width="560" height="368" rx="11"/><rect class="sec-hbar" x="315" y="381" width="550" height="18" rx="5"/><text class="sec-h" x="322" y="394">stages · 4× BitStage</text></g>
<g class=""><rect class="b c-act " x="318" y="402" width="544" height="330" rx="11"/><rect class="sec-hbar" x="323" y="406" width="534" height="18" rx="5"/><text class="sec-h" x="330" y="419">layers · 3× BitPreActivationBottleneckLayer</text></g>
<g class=""><rect class="b c-embed " x="300" y="166" width="580" height="159" rx="11"/><rect class="sec-hbar" x="305" y="170" width="570" height="18" rx="5"/><text class="sec-h" x="312" y="183">embedder · Embeddings → [1×64×16×16]</text></g>
<g class=""><rect class="b c-conv " x="326" y="427" width="528" height="89" rx="11"/><rect class="sec-hbar" x="331" y="431" width="518" height="18" rx="5"/><text class="sec-h" x="338" y="444">downsample · BitDownsampleConv</text></g>
<g class=""><rect class="b c-pool " x="310" y="223" width="560" height="60" rx="11"/><rect class="sec-hbar" x="315" y="227" width="550" height="18" rx="5"/><text class="sec-h" x="322" y="240">pooler · BitMaxPool2d</text></g>
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<polyline class="flow" points="590.0,325 590.0,349" marker-end="url(#ah-flow)"/>
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<polyline class="flow" points="590.0,816 590.0,840" marker-end="url(#ah-flow)"/>
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<g class=""><rect class="b c-io" x="300" y="108" width="580" height="34" rx="17"/><text class="box-label sm" x="590.0" y="129.5" text-anchor="middle">pixel_values [1, 3, 64, 64]</text></g>
<g class=""><title>convolution: WeightStandardizedConv2d 3→64 k7×7</title><rect class="b c-conv" x="310" y="194" width="560" height="22" rx="9"/><text class="box-label sm" x="590.0" y="209.5" text-anchor="middle">convolution WeightStandardizedConv2d 3→64 k7×7</text></g>
<g class=""><title>pad: Identity</title><rect class="b c-sub" x="318" y="248" width="544" height="22" rx="9"/><text class="box-label sm" x="590.0" y="263.5" text-anchor="middle">pad Identity</text></g>
<g class=""><title>pad: ConstantPad2d</title><rect class="b c-sub" x="310" y="290" width="276" height="22" rx="9"/><text class="box-label sm" x="448.0" y="305.5" text-anchor="middle">pad ConstantPad2d</text></g>
<g class=""><title>norm: Identity</title><rect class="b c-sub" x="593" y="290" width="276" height="22" rx="9"/><text class="box-label sm" x="731.0" y="305.5" text-anchor="middle">norm Identity</text></g>
<g class=""><title>conv: WeightStandardizedConv2d 64→256 k1×1</title><rect class="b c-conv" x="334" y="452" width="512" height="22" rx="9"/><text class="box-label sm" x="590.0" y="467.5" text-anchor="middle">conv WeightStandardizedConv2d 64→256 k1×1</text></g>
<g class=""><title>norm: Identity</title><rect class="b c-sub" x="334" y="481" width="512" height="22" rx="9"/><text class="box-label sm" x="590.0" y="496.5" text-anchor="middle">norm Identity</text></g>
<g class=""><title>norm1: BitGroupNormActivation 64</title><rect class="b c-norm" x="326" y="523" width="528" height="22" rx="9"/><text class="box-label sm" x="590.0" y="538.5" text-anchor="middle">norm1 GroupNorm 64</text></g>
<g class=""><title>conv1: WeightStandardizedConv2d 64→64 k1×1</title><rect class="b c-conv" x="326" y="552" width="528" height="22" rx="9"/><text class="box-label sm" x="590.0" y="567.5" text-anchor="middle">conv1 WeightStandardizedConv2d 64→64 k1×1</text></g>
<g class=""><title>norm2: BitGroupNormActivation 64</title><rect class="b c-norm" x="326" y="581" width="528" height="22" rx="9"/><text class="box-label sm" x="590.0" y="596.5" text-anchor="middle">norm2 GroupNorm 64</text></g>
<g class=""><title>conv2: WeightStandardizedConv2d 64→64 k3×3</title><rect class="b c-conv" x="326" y="610" width="528" height="22" rx="9"/><text class="box-label sm" x="590.0" y="625.5" text-anchor="middle">conv2 WeightStandardizedConv2d 64→64 k3×3</text></g>
<g class=""><title>norm3: BitGroupNormActivation 64</title><rect class="b c-norm" x="326" y="639" width="528" height="22" rx="9"/><text class="box-label sm" x="590.0" y="654.5" text-anchor="middle">norm3 GroupNorm 64</text></g>
<g class=""><title>conv3: WeightStandardizedConv2d 64→256 k1×1</title><rect class="b c-conv" x="326" y="668" width="528" height="22" rx="9"/><text class="box-label sm" x="590.0" y="683.5" text-anchor="middle">conv3 WeightStandardizedConv2d 64→256 k1×1</text></g>
<g class=""><title>drop_path: Identity</title><rect class="b c-sub" x="326" y="697" width="528" height="22" rx="9"/><text class="box-label sm" x="590.0" y="712.5" text-anchor="middle">drop_path Identity</text></g>
<g class=""><rect class="b c-norm" x="300" y="782" width="580" height="34" rx="9"/><text class="box-label sm" x="590.0" y="803.5" text-anchor="middle">norm · GroupNorm → [1×2048×2×2]</text></g>
<g class=""><rect class="b c-pool" x="300" y="840" width="580" height="34" rx="9"/><text class="box-label sm" x="590.0" y="861.5" text-anchor="middle">pooler · AdaptiveAvgPool2d → [1×2048×1×1]</text></g>
<g class=""><rect class="b c-io" x="300" y="898" width="580" height="34" rx="17"/><text class="box-label sm" x="590.0" y="919.5" text-anchor="middle">output [1×2048×2×2]</text></g>
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<text class="facts-k" x="926" y="112">model id</text>
<text class="facts-v" x="1162" y="112" text-anchor="end">google/bit-50</text>
<text class="facts-k" x="926" y="134">model_type</text>
<text class="facts-v" x="1162" y="134" text-anchor="end">bit</text>
<text class="facts-k" x="926" y="156">config</text>
<text class="facts-v" x="1162" y="156" text-anchor="end">BitConfig</text>
<text class="facts-k" x="926" y="178">decoder</text>
<text class="facts-v" x="1162" y="178" text-anchor="end">dense</text>
<text class="facts-k" x="926" y="200">layers</text>
<text class="facts-v" x="1162" y="200" text-anchor="end">4</text>
<text class="facts-k" x="926" y="222">hidden</text>
<text class="facts-v" x="1162" y="222" text-anchor="end">—</text>
<text class="facts-k" x="926" y="244">intermediate</text>
<text class="facts-v" x="1162" y="244" text-anchor="end">—</text>
<text class="facts-k" x="926" y="266">heads / kv</text>
<text class="facts-v" x="1162" y="266" text-anchor="end">None / None</text>
<text class="facts-k" x="926" y="288">attention</text>
<text class="facts-v" x="1162" y="288" text-anchor="end">—</text>
<text class="facts-k" x="926" y="310">norm</text>
<text class="facts-v" x="1162" y="310" text-anchor="end">BitGroupNormActivation</text>
<text class="facts-k" x="926" y="332">positional</text>
<text class="facts-v" x="1162" y="332" text-anchor="end">n/a</text>
<text class="facts-k" x="926" y="354">vocab</text>
<text class="facts-v" x="1162" y="354" text-anchor="end">—</text>
<text class="facts-k" x="926" y="376">max_pos</text>
<text class="facts-v" x="1162" y="376" text-anchor="end">—</text>
<text class="facts-k" x="926" y="398">tie_embeddings</text>
<text class="facts-v" x="1162" y="398" text-anchor="end">None</text>
<text class="legend-t" x="914" y="436" font-weight="700">legend</text>
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<text class="legend-t" x="940" y="457">embedding</text>
<rect x="916" y="465" width="16" height="12" rx="2" fill="var(--attn-s)"/>
<text class="legend-t" x="940" y="475">attention</text>
<rect x="916" y="483" width="16" height="12" rx="2" fill="var(--mamba-s)"/>
<text class="legend-t" x="940" y="493">Mamba / SSM</text>
<rect x="916" y="501" width="16" height="12" rx="2" fill="var(--moe-s)"/>
<text class="legend-t" x="940" y="511">MoE / experts</text>
<rect x="916" y="519" width="16" height="12" rx="2" fill="var(--proj-s)"/>
<text class="legend-t" x="940" y="529">linear / proj</text>
<rect x="916" y="537" width="16" height="12" rx="2" fill="var(--grid)"/>
<text class="legend-t" x="940" y="547">convolution</text>
<rect x="916" y="555" width="16" height="12" rx="2" fill="var(--norm-s)"/>
<text class="legend-t" x="940" y="565">normalization</text>
<rect x="916" y="573" width="16" height="12" rx="2" fill="var(--grid)"/>
<text class="legend-t" x="940" y="583">activation</text>
<rect x="916" y="591" width="16" height="12" rx="2" fill="var(--grid)"/>
<text class="legend-t" x="940" y="601">pooling</text>
<rect x="916" y="609" width="16" height="12" rx="2" fill="var(--head-s)"/>
<text class="legend-t" x="940" y="619">head</text>
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