The C#/.NET binding of llama.cpp. It provides higher-level APIs to inference the LLaMA Models and deploy it on local device with C#/.NET. It works on both Windows, Linux and MAC without requirement for compiling llama.cpp yourself. Even without a GPU or not enough GPU memory, you can still apply LLaMA models well with this repo. 🤗
Furthermore, it provides integrations with other projects such as semantic-kernel, kernel-memory and BotSharp to provide higher-level applications.
Discussions about the roadmap to v1.0.0: #287
Table of Contents
Firstly, search LLamaSharp in nuget package manager and install it.
PM> Install-Package LLamaSharp
Then, search and install one of the following backends. (Please don't install two or more)
LLamaSharp.Backend.Cpu # cpu for windows, linux and mac (mac metal is also supported)
LLamaSharp.Backend.Cuda11 # cuda11 for windows and linux
LLamaSharp.Backend.Cuda12 # cuda12 for windows and linux
LLamaSharp.Backend.MacMetal # Removed after v0.8.0, metal support has been moved to cpu version now
We publish these backends because they are the most popular ones. If none of them matches, please compile the llama.cpp yourself. In this case, please DO NOT install the backend packages, instead, add your DLL to your project and ensure it will be copied to the output directory when compiling your project. For more informations please refer to (this guide).
For microsoft semantic-kernel integration, please search and install the following package:
LLamaSharp.semantic-kernel
For microsoft kernel-memory integration, please search and install the following package (currently kernel-memory only supports net6.0):
LLamaSharp.kernel-memory
In general, there may be some break changes between two minor releases, for example 0.5.1 and 0.6.0. On the contrary, we don't introduce API break changes in patch release. Therefore it's recommended to keep the highest patch version of a minor release. For example, keep 0.5.6 instead of 0.5.3.
LLamaSharp provides two ways to run inference: LLamaExecutor and ChatSession. The chat session is a higher-level wrapping of the executor and the model. Here's a simple example to use chat session.
using LLama.Common;
using LLama;
string modelPath = "<Your model path>"; // change it to your own model path
var prompt = "Transcript of a dialog, where the User interacts with an Assistant named Bob. Bob is helpful, kind, honest, good at writing, and never fails to answer the User's requests immediately and with precision.\r\n\r\nUser: Hello, Bob.\r\nBob: Hello. How may I help you today?\r\nUser: Please tell me the largest city in Europe.\r\nBob: Sure. The largest city in Europe is Moscow, the capital of Russia.\r\nUser:"; // use the "chat-with-bob" prompt here.
// Load a model
var parameters = new ModelParams(modelPath)
{
ContextSize = 1024,
Seed = 1337,
GpuLayerCount = 5
};
using var model = LLamaWeights.LoadFromFile(parameters);
// Initialize a chat session
using var context = model.CreateContext(parameters);
var ex = new InteractiveExecutor(context);
ChatSession session = new ChatSession(ex);
// show the prompt
Console.WriteLine();
Console.Write(prompt);
// run the inference in a loop to chat with LLM
while (prompt != "stop")
{
await foreach (var text in session.ChatAsync(prompt, new InferenceParams() { Temperature = 0.6f, AntiPrompts = new List<string> { "User:" } }))
{
Console.Write(text);
}
prompt = Console.ReadLine();
}
// save the session
session.SaveSession("SavedSessionPath");The following example shows how to quantize the model. With LLamaSharp you needn't to compile c++ project and run scripts to quantize the model, instead, just run it in C#.
string srcFilename = "<Your source path>";
string dstFilename = "<Your destination path>";
string ftype = "q4_0";
if(Quantizer.Quantize(srcFileName, dstFilename, ftype))
{
Console.WriteLine("Quantization succeed!");
}
else
{
Console.WriteLine("Quantization failed!");
}For more usages, please refer to Examples.
We provide the integration of ASP.NET core and a web app demo. Please clone the repo to have a try.
Since we are in short of hands, if you're familiar with ASP.NET core, we'll appreciate it if you would like to help upgrading the Web API integration.
✅: completed.
✅ LLaMa model inference
✅ Embeddings generation, tokenization and detokenization
✅ Chat session
✅ Quantization
✅ Grammar
✅ State saving and loading
✅ ASP.NET core Integration
✅ Semantic-kernel Integration
🔳 Fine-tune
✅ Local document search (enabled by kernel-memory now)
🔳 MAUI Integration
- GPU out of memory: Please try setting
n_gpu_layersto a smaller number. - Unsupported model:
llama.cppis under quick development and often has break changes. Please check the release date of the model and find a suitable version of LLamaSharp to install, or generateggufformat weights from original weights yourself. - Cannot load native lirary: 1) ensure you installed one of the backend packages. 2) Run
NativeLibraryConfig.WithLogs()at the very beginning of your code to print more informations. 3) check if your system supports avx2, which is the default settings of official runtimes now. If not, please compile llama.cpp yourself and specify it withNativeLibraryConfig.WithLibrary. - How to find a model: Models in format
ggufare valid for LLamaSharp (andggmlbefore v0.5.1). If you're new to LLM/LLaMA, it's a good choice to searchLLamaandggufon huggingface to find a model. Another choice is generate gguf format file yourself with a pytorch weight (or any other), pleae refer to convert.py and convert-llama-ggml-to-gguf.py to get gguf file through a ggml transformation.
Any contribution is welcomed! There's a TODO list in LLamaSharp Dev Project and you could pick an interested one to start. Please read the contributing guide for more informations.
You can also do one of the followings to help us make LLamaSharp better:
- Submit a feature request.
- Star and share LLamaSharp to let others know it.
- Write a blog or demo about LLamaSharp.
- Help to develop Web API and UI integration.
- Just open an issue about the problem you met!
Join our chat on Discord (please contact Rinne to join the dev channel if you want to be a contributor).
Join QQ group
Here's the mapping of them and corresponding model samples provided by LLamaSharp. If you're not sure which model is available for a version, please try our sample model.
The llama.cpp commit id will help if you want to compile a DLL yourself.
| LLamaSharp | Verified Model Resources | llama.cpp commit id |
|---|---|---|
| v0.2.0 | This version is not recommended to use. | - |
| v0.2.1 | WizardLM, Vicuna (filenames with "old") | - |
| v0.2.2, v0.2.3 | WizardLM, Vicuna (filenames without "old") | 63d2046 |
| v0.3.0, v0.4.0 | LLamaSharpSamples v0.3.0, WizardLM | 7e4ea5b |
| v0.4.1-preview | Open llama 3b, Open Buddy | aacdbd4 |
| v0.4.2-preview | Llama2 7b GGML | 3323112 |
| v0.5.1 | Llama2 7b GGUF | 6b73ef1 |
| v0.6.0 | cb33f43 | |
| v0.7.0, v0.8.0 | Thespis-13B, LLaMA2-7B | 207b519 |
| v0.8.1 | e937066 |
This project is licensed under the terms of the MIT license.