nx_block_quant_h2h_gate.nx
buildroot/runtime/nx_block_quant_h2h_gate.nx
about
nx_block_quant_h2h_gate.nx -- work the BEHIND scorecard line (quantization) with a real technique:
BLOCK (per-group) quantization + FRACTIONAL scales (what GGUF Q4_K/Q8 do). A separate scale per small
block of B weights adapts to local magnitude; fractional scale (round(w*127/max), deq=q*max/127) avoids
the coarse integer-scale error that hurt the earlier per-channel try. Measured on REAL BF16 weights:
per-tensor vs block-64 vs block-16 weight relative-L2 error. HONEST: report how much it closes the
0.8%->0.04% gap AND what remains (production 0.04% still needs QAT/4-bit-aware). ours measured.
No hw writes (Rule 26). expect_exit: 0 license_tier: ORIGINAL
dependencies 3 imports · 0 importers
imports: nx_syscalls.nxnx_gate_verdict.nxnx_stage_path.nx
imported by: nobody (leaf or entry point)
call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown
structs
| none |
consts
| none |
functions
| 12 | func bq_puts(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } |
| 13 | func bq_num(v: i64) -> i64 { let b: *u8=sys_mmap(28); var m: i64=v; if m<0{m=0-m;sys_write(1,"-" as *u8,1)} let t: *u8=sys_mmap(28); var k: i64=0; if m==0{t[0]=48 as u8;k=1} while m>0{t[k]=(48+(m%10)) as u8;m=m/10;k=k+1} var i: i64=0; while i<k{b[i]=t[k-1-i];i=i+1} sys_write(1,b,k); return 0 } |
| 14 | func absq(x: i64) -> i64 { if x<0 { return 0-x } return x } called by 1: blockerr |
| 15 | func rdiv(a: i64, b: i64) -> i64 { if b==0 { return 0 } if a>=0 { return (a+(b>>1))/b } return 0 - (((0-a)+(b>>1))/b) } called by 1: qdeq |
| 16 | func isqrt(v: i64) -> i64 { if v<=0 { return 0 } if v<4 { return 1 } var x: i64=v; var y: i64=(x+1)>>1; var go: i64=1; while go==1 { if y<x { x=y; y=(x+v/x)>>1 } else { go=0 } } return x } called by 1: blockerr |
| 17 | func bf16_to_q16(bf: i64) -> i64 { let sign: i64=(bf>>15)&1; let exp: i64=(bf>>7)&255; let mant: i64=bf&127; if exp==0 { return 0 } if exp==255 { if sign==1 { return 0-2147483647 } return 2147483647 } let m: i64=128+mant; let e: i64=exp-118; var v: i64=0; if e>=0 { v=m<<e } else { v=m>>(0-e) } if sign==1 { v=0-v } return v } called by 1: main |
| 19 | func qdeq(w: i64, mx: i64) -> i64 { if mx<=0 { return 0 } var q: i64=rdiv(w*127, mx); if q>127 { q=127 } if q<0-127 { q=0-127 } return rdiv(q*mx, 127) } |
| 22 | func blockerr(W: *i64, N: i64, B: i64) -> i64 |
| 40 | func main() -> i64 |