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llama.cpp: implement ban_eos_token via logits_processor (#2765)

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Cebtenzzre 2023-06-19 20:31:19 -04:00 committed by GitHub
parent 0d9d70ec7e
commit 59e7ecb198
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1 changed files with 11 additions and 2 deletions
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13
modules/llamacpp_model.py
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@ -7,14 +7,20 @@ https://abetlen.github.io/llama-cpp-python/
'''
import re
from functools import partial
from llama_cpp import Llama, LlamaCache
from llama_cpp import Llama, LlamaCache, LogitsProcessorList
from modules import shared
from modules.callbacks import Iteratorize
from modules.logging_colors import logger
def ban_eos_logits_processor(eos_token, input_ids, logits):
logits[eos_token] = -float('inf')
return logits
class LlamaCppModel:
def __init__(self):
self.initialized = False
@ -72,7 +78,10 @@ class LlamaCppModel:
mirostat_mode=int(state['mirostat_mode']),
mirostat_tau=state['mirostat_tau'],
mirostat_eta=state['mirostat_eta'],
stream=True
stream=True,
logits_processor=LogitsProcessorList([
partial(ban_eos_logits_processor, self.model.token_eos()),
]) if state['ban_eos_token'] else None,
)
output = ""