The C#/.NET binding of llama.cpp. It provides APIs to inference the LLaMa Models and deploy it on local environment. It works on both Windows, Linux and MAC without requirment for compiling llama.cpp yourself. Its performance is close to llama.cpp.
Furthermore, it provides integrations with other projects such as BotSharp to provide higher-level applications and UI.
Firstly, search LLamaSharp in nuget package manager and install it.
PM> Install-Package LLamaSharp
Then, search and install one of the following backends:
LLamaSharp.Backend.Cpu # cpu for windows, linux and mac
LLamaSharp.Backend.Cuda11 # cuda11 for windows and linux
LLamaSharp.Backend.Cuda12 # cuda12 for windows and linux
LLamaSharp.Backend.MacMetal # metal for mac
If you would like to use it with microsoft semantic-kernel, please search and install the following package:
LLamaSharp.semantic-kernel
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.
| LLamaSharp.Backend | 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 | v0.2.2, v0.2.3 | WizardLM, Vicuna (filenames without "old") | 63d2046 |
| v0.3.0, v0.3.1 | v0.3.0, v0.4.0 | LLamaSharpSamples v0.3.0, WizardLM | 7e4ea5b |
| v0.4.1-preview (cpu only) | v0.4.1-preview | Open llama 3b, Open Buddy | aacdbd4 |
| v0.4.2-preview (cpu,cuda11) | v0.4.2-preview | Llama2 7b GGML | 3323112 |
| v0.5.1 | v0.5.1 | Llama2 7b GGUF | 6b73ef1 |
Many hands make light work. If you have found any other model resource that could work for a version, we'll appreciate it for opening an PR about it! 😊
We publish the backend with cpu, cuda11 and cuda12 because they are the most popular ones. If none of them matches, please compile the llama.cpp
from source and put the libllama under your project's output path (guide).
- 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 use the model we provide on huggingface.
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")
{
foreach (var text in session.Chat(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 here. Since currently the API is not stable, please clone the repo and use it. In the future we'll publish it on NuGet.
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
✅ State saving and loading
✅ ASP.NET core Integration
✅ Semantic-kernel Integration
🔳 Fine-tune
🔳 Local document search
🔳 MAUI Integration
Some extra model resources could be found below:
- Qunatized models provided by LLamaSharp Authors
- eachadea/ggml-vicuna-13b-1.1
- TheBloke/wizardLM-7B-GGML
- Magnet: magnet:?xt=urn:btih:b8287ebfa04f879b048d4d4404108cf3e8014352&dn=LLaMA
The weights included in the magnet is exactly the weights from Facebook LLaMa.
The prompts could be found below:
Any contribution is welcomed! Please read the contributing guide. You can do one of the followings to help us make LLamaSharp better:
- Append a model link that is available for a version. (This is very important!)
- Star and share
LLamaSharpto let others know it. - Add a feature or fix a BUG.
- Help to develop Web API and UI integration.
- Just start an issue about the problem you met!
Join our chat on Discord.
Join QQ group
This project is licensed under the terms of the MIT license.
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