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Merge pull request #420 from vinjn/fix-371-enc-is-not-defined

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Move enc to gloabal namespace to fix #371
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Andrej 2024-02-27 09:27:01 -08:00 committed by GitHub
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1 changed files with 2 additions and 1 deletions
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data/openwebtext/prepare.py
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@ -16,6 +16,8 @@ num_proc = 8
# it is better than 1 usually though
num_proc_load_dataset = num_proc
enc = tiktoken.get_encoding("gpt2")
if __name__ == '__main__':
# takes 54GB in huggingface .cache dir, about 8M documents (8,013,769)
dataset = load_dataset("openwebtext", num_proc=num_proc_load_dataset)
@ -38,7 +40,6 @@ if __name__ == '__main__':
# })
# we now want to tokenize the dataset. first define the encoding function (gpt2 bpe)
enc = tiktoken.get_encoding("gpt2")
def process(example):
ids = enc.encode_ordinary(example['text']) # encode_ordinary ignores any special tokens
ids.append(enc.eot_token) # add the end of text token, e.g. 50256 for gpt2 bpe