GlmMoeDsaConfig.__init__ has no **kwargs, so transformers drops the raw
config.json fields the IndexCache/DSA path reads via getattr (index_topk_freq,
index_topk_pattern, index_skip_topk_offset) and may clobber qk_rope_head_dim —
only named fields like index_topk survive. Re-read them from config.json and
restore in get_config for GlmMoeDsaForCausalLM, matching upstream #27114.
Without this, setting index_topk_freq in the model config has NO effect
(getattr falls back to 1 -> IndexCache stays off). Verified on the B300 image:
get_config("/ssd/models/GLM-5.1-FP8") now returns index_topk_freq=4.
Refs: WI-2026-06-07-001
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
(cherry picked from commit 92ff8b47470c61462e252bc7ba428203ff3c324c)
leavelet
98fdae3375