Gemma single-card had NO functional default (vLLM single is upstream-gated at
head_dim=512; ik-llama walls ~24K; stock llama.cpp ~12 TPS). beellama is the
only viable fast single-card Gemma-4 path, so promote it to fill the gap.
Registry: beellama/gemma-dflash experimental -> caveats + new
DEFAULTS[(gemma-4-31b, beellama, single)]. Resolver now returns it for Gemma
single (beellama is #1 in ENGINE_PREFERENCE[single]); Gemma dual unchanged.
Validated #441: 131-200K ctx, 47/88 TPS, 8-pack 109/150 think-off /
114/150 think-on (reasoning net-positive on Gemma). Reuses the multi-arch
image from #271 (sm_86/89/120; sm_89/120 compiled-not-validated).
Docs: compose header (caveats + Quality + ctx ceiling), README Gemma row,
BENCHMARKS row marker + intro, UPSTREAM.md row. Resolver guard test flipped
from a degradation assertion to beellama/gemma-dflash; full suite 38/38.
Re-test trigger: re-point the default to the no-fork mainline path when
llama.cpp#23398 (Gemma-4 MTP) merges (docs/UPSTREAM.md).
Co-authored-by: noonghunna <[email protected]>
Co-authored-by: Claude Opus 4.8 (1M context) <[email protected]>
