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py : fix internlm2-hf convert to gguf (#5305)

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* py : fix internlm2-hf convert to gguf

* ggml-ci
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Guoteng 2024-02-05 17:04:06 +08:00 committed by GitHub
parent 6fdfa2ecc6
commit 7e1ae372f3
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1 changed files with 27 additions and 2 deletions
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convert-hf-to-gguf.py
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@ -1416,8 +1416,32 @@ class InternLM2Model(Model):
self.gguf_writer.add_add_space_prefix(add_prefix)
special_vocab = gguf.SpecialVocab(self.dir_model, n_vocab=len(tokens))
old_eos = special_vocab.special_token_ids["eos"]
if "chat" in os.path.basename(self.dir_model.absolute()):
# For the chat model, we replace the eos with '<|im_end|>'.
special_vocab.special_token_ids["eos"] = self._try_get_sft_eos(tokenizer)
print(f"Replace eos:{old_eos} with a special token:{special_vocab.special_token_ids['eos']} \
in chat mode so that the conversation can end normally.")
special_vocab.add_to_gguf(self.gguf_writer)
def _try_get_sft_eos(self, tokenizer):
unused_145_list = tokenizer.encode('[UNUSED_TOKEN_145]')
im_end_list = tokenizer.encode('<|im_end|>')
assert (len(unused_145_list) == 1) ^ (len(im_end_list) == 1)
if len(unused_145_list) == 1:
eos_token = unused_145_list[0]
if len(im_end_list) == 1:
eos_token = im_end_list[0]
return eos_token
def _hf_permute_qk(self, weights, n_head: int, n_head_kv: int):
if n_head_kv is not None and n_head != n_head_kv:
n_head = n_head_kv
return (weights.reshape(n_head, 2, weights.shape[0] // n_head // 2, *weights.shape[1:])
.swapaxes(1, 2)
.reshape(weights.shape))
def set_gguf_parameters(self):
self.gguf_writer.add_name("InternLM2")
self.gguf_writer.add_context_length(self.hparams["max_position_embeddings"])
@ -1486,8 +1510,9 @@ class InternLM2Model(Model):
qkv = data_torch
qkv = rearrange(qkv.T, " o (g n i) ->o g n i", g=num_groups, n=q_per_kv + 2, i=head_dim)
q, k, v = qkv[..., : q_per_kv, :], qkv[..., q_per_kv: q_per_kv + 1, :], qkv[..., q_per_kv + 1: q_per_kv + 2, :]
q = rearrange(q, " o g n i -> o (g n i)").T
k = rearrange(k, " o g n i -> o (g n i)").T
# The model weights of q and k equire additional reshape.
q = self._hf_permute_qk(rearrange(q, " o g n i -> o (g n i)").T, num_heads, num_heads)
k = self._hf_permute_qk(rearrange(k, " o g n i -> o (g n i)").T, num_heads, num_kv_heads)
v = rearrange(v, " o g n i -> o (g n i)").T
self.post_write_tensors(tensor_map, f"model.layers.{bid}.attention.wq.weight", q)
self.post_write_tensors(tensor_map, f"model.layers.{bid}.attention.wk.weight", k)