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models : change convert-pt-to-ggml to use .tiktoken tokenizer files (#725)

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Ivan Gorin 2023-04-14 19:50:39 +03:00 committed by GitHub
parent 61128870b8
commit 62b51c3070
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1 changed files with 7 additions and 11 deletions
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18
models/convert-pt-to-ggml.py
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@ -39,6 +39,7 @@ import json
import code
import torch
import numpy as np
import base64
#from transformers import GPTJForCausalLM
#from transformers import GPT2TokenizerFast
@ -224,18 +225,14 @@ with np.load(os.path.join(dir_whisper, "whisper/assets", "mel_filters.npz")) as
#code.interact(local=locals())
multilingual = hparams["n_vocab"] == 51865
dir_tokenizer = os.path.join(dir_whisper, "whisper/assets", multilingual and "multilingual" or "gpt2")
#tokenizer = build_tokenizer(dir_whisper, multilingual and "multilingual" or "gpt2")
#print(tokenizer)
#print(tokenizer.name_or_path)
#print(len(tokenizer.additional_special_tokens))
tokenizer = os.path.join(dir_whisper, "whisper/assets", multilingual and "multilingual.tiktoken" or "gpt2.tiktoken")
# output in the same directory as the model
fname_out = dir_out + "/ggml-model.bin"
with open(dir_tokenizer + "/vocab.json", "r", encoding="utf8") as f:
tokens = json.load(f)
with open(tokenizer, "rb") as f:
contents = f.read()
tokens = {base64.b64decode(token): int(rank) for token, rank in (line.split() for line in contents.splitlines() if line)}
# use 16-bit or 32-bit floats
use_f16 = True
@ -271,9 +268,8 @@ byte_decoder = {v:k for k, v in byte_encoder.items()}
fout.write(struct.pack("i", len(tokens)))
for key in tokens:
text = bytearray([byte_decoder[c] for c in key])
fout.write(struct.pack("i", len(text)))
fout.write(text)
fout.write(struct.pack("i", len(key)))
fout.write(key)
for name in list_vars.keys():
data = list_vars[name].squeeze().numpy()