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feat: streaming GGUF → bgz17 indexer + OpenChat 679× compression #48

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Merged
AdaWorldAPI merged 2 commits into from
Mar 30, 2026
+5 −2
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feat: streaming GGUF → bgz17 indexer + OpenChat 679× compression #48

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9f12491
data: OpenChat 3.5 Q8_0 → bgz17 compressed (7.7 GB → 41 MB, 679×)
claude Mar 30, 2026
fea5832
fix: clean f16 subnormal exponent math (113 + e, no .max(0) band-aid)
claude Mar 30, 2026
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7 changes: 5 additions & 2 deletions src/hpc/gguf.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -425,8 +425,11 @@ fn f16_to_f32(bits: u16) -> f32 {
e -= 1;
}
m &= 0x3FF;
let f32_exp = (127i32 - 15 + 1 + e).max(0) as u32;
let f32_bits = (sign << 31) | ((f32_exp & 0xFF) << 23) | (m << 13);
// f16 bias=15, f32 bias=127. Subnormal f16 has implicit exponent 1-15=-14.
// After normalizing mantissa (e shifts), f32 exponent = 127 + (1-15) + e = 113 + e.
// Minimum e = -10 (mantissa 0x001), giving f32_exp = 103. Always valid.
let f32_exp = (113 + e) as u32;
let f32_bits = (sign << 31) | (f32_exp << 23) | (m << 13);
return f32::from_bits(f32_bits);
}
if exp == 31 {
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Binary file added src/hpc/openchat/weights/openchat-3.5-0106.bgz7
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