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chat.py
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chat.py
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import os, json, itertools, bisect, gc
from transformers import AutoModelForCausalLM, AutoTokenizer, AutoConfig
import transformers
import torch
from accelerate import Accelerator
import accelerate
import time
model = None
tokenizer = None
generator = None
os.environ["CUDA_VISIBLE_DEVICES"]="1"
flag = "ExplanationGenerator" ## "Qiming-Alpaca", "ExplanationGenerator", "ExplanationVerifier"
if flag == "Qiming-Alpaca":
load_model_name = "./qiming_alpaca_7B/"
First_chat = "Qiming-Alpaca: I am Qiming-Alpaca, what questions do you have?"
invitation = "Qiming-Alpaca: "
human_invitation = "User: "
elif flag == "LLaMA-7B":
load_model_name = "./llama_7B_hf/llama-7b"
First_chat = "Explanation Generator: I am an expert in explantion generator, what questions can I help?"
invitation = "Explanation Generator: "
human_invitation = "User: "
elif flag == "ExplanationGenerator":
load_model_name = "./qiming_alpaca_7B_Cardiff_generator/"
First_chat = "Explanation Generator: I am an expert in explantion generator, what questions can I help?"
invitation = "Explanation Generator: "
human_invitation = "User: "
elif flag == "ExplanationVerifier":
load_model_name = "./Cardiff_Sydney_merged_verifier/"
First_chat = "Explanation Verifier: I am an expert in explantion verifier, what questions can I help?"
invitation = "Explanation Verifier: "
human_invitation = "User: "
def load_model(model_name, eight_bit=0, device_map="auto"):
global model, tokenizer, generator
print("Loading "+model_name+"...")
if device_map == "zero":
device_map = "balanced_low_0"
# config
gpu_count = torch.cuda.device_count()
print('gpu_count', gpu_count)
tokenizer = transformers.LlamaTokenizer.from_pretrained(model_name)
model = transformers.LlamaForCausalLM.from_pretrained(
model_name,
#device_map=device_map,
#device_map="auto",
torch_dtype=torch.float16,
#max_memory = {0: "14GB", 1: "14GB", 2: "14GB", 3: "14GB",4: "14GB",5: "14GB",6: "14GB",7: "14GB"},
#load_in_8bit=eight_bit,
#from_tf=True,
low_cpu_mem_usage=True,
load_in_8bit=False,
cache_dir="cache"
).cuda()
generator = model.generate
load_model(load_model_name)
# First_chat = "Qiming-Alpaca: I am Qiming-Alpaca, what questions do you have?"
print(First_chat)
history = []
history.append(First_chat)
def go():
# invitation = "Qiming-Alpaca: "
# human_invitation = "User: "
# input
msg = input(human_invitation)
print("")
history.append(human_invitation + msg)
#fulltext = "If you are a doctor, please answer the medical questions based on the patient's description. \n\n" + "\n\n".join(history) + "\n\n" + invitation
fulltext = "\n\n".join(history) + "\n\n" + invitation
#print('SENDING==========')
#print(fulltext)
#print('==========')
generated_text = ""
gen_in = tokenizer(fulltext, return_tensors="pt").input_ids.cuda()
in_tokens = len(gen_in)
with torch.no_grad():
generated_ids = generator(
gen_in,
max_new_tokens=2048,
use_cache=True,
pad_token_id=tokenizer.eos_token_id,
num_return_sequences=1,
do_sample=True,
repetition_penalty=1.1, # 1.0 means 'off'. unfortunately if we penalize it it will not output Sphynx:
temperature=0.5, # default: 1.0
top_k = 50, # default: 50
top_p = 1.0, # default: 1.0
early_stopping=True,
)
generated_text = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)[0] # for some reason, batch_decode returns an array of one element?
text_without_prompt = generated_text[len(fulltext):]
response = text_without_prompt
response = response.split(human_invitation)[0]
response.strip()
print(invitation + response)
print("")
history.append(invitation + response)
while True:
go()