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docs: add server config docs

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Andrei Betlen 2023-12-22 14:37:24 -05:00
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commit 522aecb868
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96
docs/server.md
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@ -32,6 +32,12 @@ python3 -m llama_cpp.server --help
NOTE: All server options are also available as environment variables. For example, `--model` can be set by setting the `MODEL` environment variable.
Check out the server config reference below settings for more information on the available options.
CLI arguments and environment variables are available for all of the fields defined in [`ServerSettings`](#llama_cpp.server.settings.ServerSettings) and [`ModelSettings`](#llama_cpp.server.settings.ModelSettings)
Additionally the server supports configuration check out the [configuration section](#configuration-and-multi-model-support) for more information and examples.
## Guides
### Code Completion
@ -121,4 +127,92 @@ response = client.chat.completions.create(
],
)
print(response)
```
```
## Configuration and Multi-Model Support
The server supports configuration via a JSON config file that can be passed using the `--config_file` parameter or the `CONFIG_FILE` environment variable.
```bash
python3 -m llama_cpp.server --config_file <config_file>
```
Config files support all of the server and model options supported by the cli and environment variables however instead of only a single model the config file can specify multiple models.
The server supports routing requests to multiple models based on the `model` parameter in the request which matches against the `model_alias` in the config file.
At the moment only a single model is loaded into memory at, the server will automatically load and unload models as needed.
```json
{
"host": "0.0.0.0",
"port": 8080,
"models": [
{
"model": "models/OpenHermes-2.5-Mistral-7B-GGUF/openhermes-2.5-mistral-7b.Q4_K_M.gguf",
"model_alias": "gpt-3.5-turbo",
"chat_format": "chatml",
"n_gpu_layers": -1,
"offload_kqv": true,
"n_threads": 12,
"n_batch": 512,
"n_ctx": 2048
},
{
"model": "models/OpenHermes-2.5-Mistral-7B-GGUF/openhermes-2.5-mistral-7b.Q4_K_M.gguf",
"model_alias": "gpt-4",
"chat_format": "chatml",
"n_gpu_layers": -1,
"offload_kqv": true,
"n_threads": 12,
"n_batch": 512,
"n_ctx": 2048
},
{
"model": "models/ggml_llava-v1.5-7b/ggml-model-q4_k.gguf",
"model_alias": "gpt-4-vision-preview",
"chat_format": "llava-1-5",
"clip_model_path": "models/ggml_llava-v1.5-7b/mmproj-model-f16.gguf",
"n_gpu_layers": -1,
"offload_kqv": true,
"n_threads": 12,
"n_batch": 512,
"n_ctx": 2048
},
{
"model": "models/mistral-7b-v0.1-GGUF/ggml-model-Q4_K.gguf",
"model_alias": "text-davinci-003",
"n_gpu_layers": -1,
"offload_kqv": true,
"n_threads": 12,
"n_batch": 512,
"n_ctx": 2048
},
{
"model": "models/replit-code-v1_5-3b-GGUF/replit-code-v1_5-3b.Q4_0.gguf",
"model_alias": "copilot-codex",
"n_gpu_layers": -1,
"offload_kqv": true,
"n_threads": 12,
"n_batch": 1024,
"n_ctx": 9216
}
]
}
```
The config file format is defined by the [`ConfigFileSettings`](#llama_cpp.server.settings.ConfigFileSettings) class.
## Server Options Reference
::: llama_cpp.server.settings.ConfigFileSettings
options:
show_if_no_docstring: true
::: llama_cpp.server.settings.ServerSettings
options:
show_if_no_docstring: true
::: llama_cpp.server.settings.ModelSettings
options:
show_if_no_docstring: true

8
llama_cpp/server/settings.py
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@ -13,6 +13,8 @@ BaseSettings.model_config["protected_namespaces"] = ()
class ModelSettings(BaseSettings):
"""Model settings used to load a Llama model."""
model: str = Field(
description="The path to the model to use for generating completions."
)
@ -131,6 +133,8 @@ class ModelSettings(BaseSettings):
class ServerSettings(BaseSettings):
"""Server settings used to configure the FastAPI and Uvicorn server."""
# Uvicorn Settings
host: str = Field(default="localhost", description="Listen address")
port: int = Field(default=8000, description="Listen port")
@ -156,6 +160,8 @@ class Settings(ServerSettings, ModelSettings):
class ConfigFileSettings(ServerSettings):
"""Configuration file format settings."""
models: List[ModelSettings] = Field(
default=[], description="Model configs, overwrites default config"
default=[], description="Model configs"
)