model : add support for JinaBertModel with non-gated ffn (#18475)

* WIP: Initial commit for fixing JinaBert original FF type support

* convert: add jina-v2-de tokenizer variant for German_Semantic_V3

* convert: fix token collision in BERT phantom vocab conversion

* convert: add feed_forward_type metadata

* model: add feed_forward_type metadata for jina-bert-v2

* model: jina-bert-v2 support standard GELU FFN variant

* model: remove ffn_type, detect FFN variant from tensor dimensions

* Update src/llama-model.cpp

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* Update src/llama-model.cpp

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* Update src/models/bert.cpp

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* Update src/models/bert.cpp

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>

* revert collision fix to be handled in separate PR

---------

Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
This commit is contained in:
o7si 2026-01-02 01:38:51 +08:00 committed by GitHub
parent 2b2afade9f
commit d0a6a31470
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
4 changed files with 17 additions and 3 deletions

View file

@ -3322,7 +3322,14 @@ bool llama_model::load_tensors(llama_model_loader & ml) {
layer.attn_norm_2_b = create_tensor(tn(LLM_TENSOR_ATTN_NORM_2, "bias", i), {n_embd}, TENSOR_NOT_REQUIRED);
layer.ffn_gate = create_tensor(tn(LLM_TENSOR_FFN_GATE, "weight", i), {n_embd, n_ff}, TENSOR_NOT_REQUIRED);
layer.ffn_up = create_tensor(tn(LLM_TENSOR_FFN_UP, "weight", i), {n_embd, layer.ffn_gate ? n_ff : n_ff * 2}, 0);
const auto tn_ffn_up_weight = tn(LLM_TENSOR_FFN_UP, "weight", i);
ggml_tensor * t_ffn_up = ml.get_tensor_meta(tn_ffn_up_weight.str().c_str());
const int64_t n_ffn_up = t_ffn_up ? t_ffn_up->ne[1] : n_ff;
GGML_ASSERT(n_ffn_up == n_ff || n_ffn_up == n_ff * 2);
layer.ffn_up = create_tensor(tn_ffn_up_weight, {n_embd, n_ffn_up}, 0);
layer.ffn_up_b = create_tensor(tn(LLM_TENSOR_FFN_UP, "bias", i), {n_ffn_up}, TENSOR_NOT_REQUIRED);
layer.ffn_down = create_tensor(tn(LLM_TENSOR_FFN_DOWN, "weight", i), {n_ff, n_embd}, 0);
layer.ffn_down_b = create_tensor(tn(LLM_TENSOR_FFN_DOWN, "bias", i), {n_embd}, 0);