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fix tokenizer for JetBrain Mellum #15045

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Merged
merged 4 commits into from
Aug 3, 2025
+6 −1
Merged

fix tokenizer for JetBrain Mellum #15045

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38bdbb8
fix tokenizer for JetBrain Mellum
csabakecskemeti Aug 2, 2025
5f78e18
Trigger CI
csabakecskemeti Aug 3, 2025
8e52042
add tokenizer model and tokenizer tests
csabakecskemeti Aug 3, 2025
00962c7
tokenizer test files not needed
csabakecskemeti Aug 3, 2025
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3 changes: 3 additions & 0 deletions convert_hf_to_gguf.py
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Original file line number Diff line number Diff line change
Expand Up @@ -852,6 +852,9 @@ def get_vocab_base_pre(self, tokenizer) -> str:
if chkhsh == "2085e1638f6c377a0aa4ead21b27bb4cb941bf800df86ed391011769c1758dfb":
# ref: https://huggingface.co/LGAI-EXAONE/EXAONE-4.0-32B
res = "exaone4"
if chkhsh == "a1e163ecab2e718a4c829d1148b6e86824ec36163bb71941c3dca9cd5ac25756":
# ref: https://huggingface.co/JetBrains/Mellum-4b-base
res = "mellum"

if res is None:
logger.warning("\n")
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1 change: 1 addition & 0 deletions convert_hf_to_gguf_update.py
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Expand Up @@ -138,6 +138,7 @@ class TOKENIZER_TYPE(IntEnum):
{"name": "midm-2.0", "tokt": TOKENIZER_TYPE.BPE, "repo": "https://huggingface.co/K-intelligence/Midm-2.0-Base-Instruct", },
{"name": "lfm2", "tokt": TOKENIZER_TYPE.BPE, "repo": "https://huggingface.co/LiquidAI/LFM2-Tokenizer"},
{"name": "exaone4", "tokt": TOKENIZER_TYPE.BPE, "repo": "https://huggingface.co/LGAI-EXAONE/EXAONE-4.0-32B", },
{"name": "mellum", "tokt": TOKENIZER_TYPE.BPE, "repo": "https://huggingface.co/JetBrains/Mellum-4b-base", },
]

# some models are known to be broken upstream, so we will skip them as exceptions
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3 changes: 2 additions & 1 deletion src/llama-vocab.cpp
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Expand Up @@ -1856,7 +1856,8 @@ void llama_vocab::impl::load(llama_model_loader & ml, const LLM_KV & kv) {
tokenizer_pre == "gigachat" ||
tokenizer_pre == "jina-v2-es" ||
tokenizer_pre == "jina-v2-de" ||
tokenizer_pre == "a.x-4.0") {
tokenizer_pre == "a.x-4.0" ||
tokenizer_pre == "mellum") {
pre_type = LLAMA_VOCAB_PRE_TYPE_GPT2;
} else if (
tokenizer_pre == "jina-v1-en" ||
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