docs: record dual-f16 KV refit on frank-default-small (2026-08-14)

docs/frank-default-small-benchmark.md

@@ -76,17 +76,21 @@ Peak VRAM (llama-bench, single context) rises both when `ncmoe` drops
 
 ## VRAM Budget Model
 
-The live service holds a fixed 800000-token KV pool plus the mmproj vision
-tower plus CUDA overhead. The model below fits llama-bench peak VRAM into a
-24 GiB budget:
+The live service holds a fixed 700416-token KV pool (f16/f16 since
+2026-08-14; refitted from 800000) plus the mmproj vision tower plus CUDA
+overhead. The model below fits llama-bench peak VRAM into a 24 GiB
+budget:
 
 ```
-service VRAM = llama-bench peak + KV pool (11.44 GiB) + overhead (2.2 GiB)
+service VRAM = llama-bench peak + KV pool (13.68 GiB f16) + overhead (2.2 GiB)
 ```
 
-This model reproduces the historical OOMs. Configurations whose sum exceeds
-24 GiB fail. For example, `ncmoe 32 - ubatch 2048` sums to about 24.4 GiB
-and fails, which matches the recorded OOMs at `ncmoe 32` and `33`.
+This model reproduces the historical OOMs. Configurations whose sum
+exceeds 24 GiB fail. For example, `ncmoe 32 - ubatch 2048` sums to about
+24.4 GiB and fails, which matches the recorded OOMs at `ncmoe 32` and
+`33`. The f16/f16 KV pool (2026-08-14) costs 20,480 bytes per cell; at
+800768 cells it is 15,640 MiB and does not fit the 24 GiB card, so the
+service runs 700416 cells (13,680 MiB).
 
 ## Candidate Configurations
 
@@ -111,7 +115,10 @@ moves one expert layer to CPU for stability:
 ```
 
 This gives prefill about 1427 t/s at 16384 prompt tokens, generation about
-44.4 t/s, and about 3.0 GiB of headroom at the 800000-token pool.
+44.4 t/s, and about 2.0 GiB of headroom at the 700416-token f16/f16 pool
+(2026-08-14 refit from 800000; the dual-f16 pool costs 13.68 GiB and
+removes the context-proportional flash-attn F16-conversion workspace that
+caused the cuBLAS crash class).
 
 `ncmoe 36` came from a live crash rather than this sweep. At `ncmoe 35` with
 `ubatch 3072`, a big prefill burst failed a cuBLAS call under memory