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convert : skip bias_vl tensor in DeepSeek-V4 DSpark conversion #28294

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Merged
ggerganov merged 2 commits into from
Sep 3, 2026
Merged

convert : skip bias_vl tensor in DeepSeek-V4 DSpark conversion #28294

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convert : skip bias_vl tensor in DeepSeek-V4 DSpark conversion
ggerganov Sep 2, 2026
2d0bf81
cont : fix
ggerganov Sep 3, 2026
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7 changes: 7 additions & 0 deletions conversion/deepseek.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1007,6 +1007,13 @@ def _map_dsv4_tensor_name(self, name: str, bid: int | None) -> tuple[gguf.MODEL_
return self._DSPARK_ROOT_MAP[name]
return super()._map_dsv4_tensor_name(name, bid)

def modify_tensors(self, data_torch: Tensor, name: str, bid: int | None) -> Iterable[tuple[str, Tensor]]:
# the DFlash draft uses the plain exp-probs bias (ffn.gate.bias -> FFN_EXP_PROBS_B);
# the mtmd-only hash routing tensors (bias_vl, tid2eid) are not part of the DFLASH arch
if name.endswith(".ffn.gate.bias_vl"):
return
yield from super().modify_tensors(data_torch, name, bid)

def set_vocab(self):
if self.target_model_dir is None:
raise ValueError("DeepSeek-V4 DSpark requires --target-model-dir with the target tokenizer")
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