Find answers from the community

Updated last month

How to use llama 2 in llamaindex

@kapa.ai How to use llama 2 in llamaindex
k
3 comments
Please stand by @larrygzlb as I search the knowledge base. I normally take about 15 seconds or so. :wave:
----------------------
To use Llama 2 with LlamaIndex, you have several options depending on your specific requirements and setup. Here's a summary of how you can integrate Llama 2:

  1. Using Ollama (for local deployment):
    If you have Ollama () installed and running, you can use Llama 2 locally with LlamaIndex like this:
Plain Text
   from llama_index.llms.ollama import Ollama
   from llama_index.core import Settings

   Settings.llm = Ollama(model="llama2", request_timeout=60.0)
   


Source ()

  1. Using LlamaCPP:
    You can use the llama-cpp-python () library to run Llama 2 locally. This method requires a decent GPU, ideally an A100 with at least 40GB of memory. Here's a basic setup:
Plain Text
   from llama_index.llms.llama_cpp import LlamaCPP
   from llama_index.llms.llama_cpp.llama_utils import messages_to_prompt, completion_to_prompt

   # Initialize the LlamaCPP model (you'll need to specify the model path)
   llm = LlamaCPP(model_path="path/to/your/llama2/model")
   


Source ()

  1. Using Llama API:
    If you prefer a hosted solution, you can use the Llama API (), which provides a hosted API for Llama 2 with function calling support:
Plain Text
   from llama_index.llms.llama_api import LlamaAPI

   api_key = "LL-your-key"
   llm = LlamaAPI(api_key=api_key)
   


Source ()

Remember to install the necessary dependencies for your chosen method. For example, for LlamaCPP:
Plain Text
%pip install llama-index-embeddings-huggingface
%pip install llama-index-llms-llama-cpp


After setting up your chosen Llama 2 integration, you can use it in your LlamaIndex workflow just like any other LLM, for tasks such as indexing, querying, and response synthesis.
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------
Add a reply
Sign up and join the conversation on Discord