from langchain.chainsimport LLMChain
from langchain.memoryimport ConversationBufferMemory
from langchain_experimental.chat_modelsimport Llama2Chat

from langchain_core.messagesimport SystemMessage
from langchain_core.prompts.chatimport(
    ChatPromptTemplate,
    HumanMessagePromptTemplate,
    MessagesPlaceholder,
)

template_messages=[
    SystemMessage(content="You are a helpful assistant."),
    MessagesPlaceholder(variable_name="chat_history"),
    HumanMessagePromptTemplate.from_template("{text}"),
]
prompt_template= ChatPromptTemplate.from_messages(template_messages)

docker run \
  --rm \
  --gpus all \
  --ipc=host \
  -p 8080:80 \
  -v ~/.cache/huggingface/hub:/data \
  -e HF_API_TOKEN=${HF_API_TOKEN} \
  ghcr.io/huggingface/text-generation-inference:0.9 \
  --hostname 0.0.0.0 \
  --model-id meta-llama/Llama-2-13b-chat-hf \
  --quantize bitsandbytes \
  --num-shard 4

# !pip3 install text-generation

from langchain_community.llmsimport HuggingFaceTextGenInference

llm= HuggingFaceTextGenInference(
    inference_server_url="http://127.0.0.1:8080/",
    max_new_tokens=512,
    top_k=50,
    temperature=0.1,
    repetition_penalty=1.03,
)

model= Llama2Chat(llm=llm)

memory= ConversationBufferMemory(memory_key="chat_history", return_messages=True)
chain= LLMChain(llm=model, prompt=prompt_template, memory=memory)

print(
    chain.run(
        text="What can I see in Vienna? Propose a few locations. Names only, no details."
)
)

 Sure, I'd be happy to help! Here are a few popular locations to consider visiting in Vienna:

1. Schönbrunn Palace
2. St. Stephen's Cathedral
3. Hofburg Palace
4. Belvedere Palace
5. Prater Park
6. Vienna State Opera
7. Albertina Museum
8. Museum of Natural History
9. Kunsthistorisches Museum
10. Ringstrasse

print(chain.run(text="Tell me more about #2."))

 Certainly! St. Stephen's Cathedral (Stephansdom) is one of the most recognizable landmarks in Vienna and a must-see attraction for visitors. This stunning Gothic cathedral is located in the heart of the city and is known for its intricate stone carvings, colorful stained glass windows, and impressive dome.

The cathedral was built in the 12th century and has been the site of many important events throughout history, including the coronation of Holy Roman emperors and the funeral of Mozart. Today, it is still an active place of worship and offers guided tours, concerts, and special events. Visitors can climb up the south tower for panoramic views of the city or attend a service to experience the beautiful music and chanting.

from os.pathimport expanduser

from langchain_community.llmsimport LlamaCpp

model_path= expanduser("~/Models/llama-2-7b-chat.Q4_0.gguf")

llm= LlamaCpp(
    model_path=model_path,
    streaming=False,
)
model= Llama2Chat(llm=llm)

memory= ConversationBufferMemory(memory_key="chat_history", return_messages=True)
chain= LLMChain(llm=model, prompt=prompt_template, memory=memory)

print(
    chain.run(
        text="What can I see in Vienna? Propose a few locations. Names only, no details."
)
)

  Of course! Vienna is a beautiful city with a rich history and culture. Here are some of the top tourist attractions you might want to consider visiting:
1. Schönbrunn Palace
2. St. Stephen's Cathedral
3. Hofburg Palace
4. Belvedere Palace
5. Prater Park
6. MuseumsQuartier
7. Ringstrasse
8. Vienna State Opera
9. Kunsthistorisches Museum
10. Imperial Palace

These are just a few of the many amazing places to see in Vienna. Each one has its own unique history and charm, so I hope you enjoy exploring this beautiful city!
``````output

llama_print_timings:        load time =     250.46 ms
llama_print_timings:      sample time =      56.40 ms /   144 runs   (    0.39 ms per token,  2553.37 tokens per second)
llama_print_timings: prompt eval time =    1444.25 ms /    47 tokens (   30.73 ms per token,    32.54 tokens per second)
llama_print_timings:        eval time =    8832.02 ms /   143 runs   (   61.76 ms per token,    16.19 tokens per second)
llama_print_timings:       total time =   10645.94 ms

print(chain.run(text="Tell me more about #2."))

Llama.generate: prefix-match hit
``````output
  Of course! St. Stephen's Cathedral (also known as Stephansdom) is a stunning Gothic-style cathedral located in the heart of Vienna, Austria. It is one of the most recognizable landmarks in the city and is considered a symbol of Vienna.
Here are some interesting facts about St. Stephen's Cathedral:
1. History: The construction of St. Stephen's Cathedral began in the 12th century on the site of a former Romanesque church, and it took over 600 years to complete. The cathedral has been renovated and expanded several times throughout its history, with the most significant renovation taking place in the 19th century.
2. Architecture: St. Stephen's Cathedral is built in the Gothic style, characterized by its tall spires, pointed arches, and intricate stone carvings. The cathedral features a mix of Romanesque, Gothic, and Baroque elements, making it a unique blend of styles.
3. Design: The cathedral's design is based on the plan of a cross with a long nave and two shorter arms extending from it. The main altar is
``````output

llama_print_timings:        load time =     250.46 ms
llama_print_timings:      sample time =     100.60 ms /   256 runs   (    0.39 ms per token,  2544.73 tokens per second)
llama_print_timings: prompt eval time =    5128.71 ms /   160 tokens (   32.05 ms per token,    31.20 tokens per second)
llama_print_timings:        eval time =   16193.02 ms /   255 runs   (   63.50 ms per token,    15.75 tokens per second)
llama_print_timings:       total time =   21988.57 ms