"vscode:/vscode.git/clone" did not exist on "d1fb65bde367aa6e3d72520c84b60be3d1539917"
Commit afd0da21 authored by zhuwenwen's avatar zhuwenwen
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Merge tag 'v0.7.1' into v0.7.1-dev

parents 1a11f127 4f4d427a
# vLLM Blog
vLLM blog posts are published [here](https://blog.vllm.ai/).
......@@ -4,6 +4,7 @@
We host regular meetups in San Francisco Bay Area every 2 months. We will share the project updates from the vLLM team and have guest speakers from the industry to share their experience and insights. Please find the materials of our previous meetups below:
- [The eighth vLLM meetup](https://lu.ma/zep56hui), with Google Cloud, January 22nd 2025. [[Slides]](https://docs.google.com/presentation/d/1epVkt4Zu8Jz_S5OhEHPc798emsYh2BwYfRuDDVEF7u4/edit?usp=sharing)
- [The seventh vLLM meetup](https://lu.ma/h0qvrajz), with Snowflake, November 14th 2024. [[Slides]](https://docs.google.com/presentation/d/1e3CxQBV3JsfGp30SwyvS3eM_tW-ghOhJ9PAJGK6KR54/edit?usp=sharing)
- [The sixth vLLM meetup](https://lu.ma/87q3nvnh), with NVIDIA, September 9th 2024. [[Slides]](https://docs.google.com/presentation/d/1wrLGwytQfaOTd5wCGSPNhoaW3nq0E-9wqyP7ny93xRs/edit?usp=sharing)
- [The fifth vLLM meetup](https://lu.ma/lp0gyjqr), with AWS, July 24th 2024. [[Slides]](https://docs.google.com/presentation/d/1RgUD8aCfcHocghoP3zmXzck9vX3RCI9yfUAB2Bbcl4Y/edit?usp=sharing)
......
......@@ -5,26 +5,34 @@ vLLM is a community project. Our compute resources for development and testing a
<!-- Note: Please sort them in alphabetical order. -->
<!-- Note: Please keep these consistent with README.md. -->
Cash Donations:
- a16z
- Dropbox
- Sequoia Capital
- Skywork AI
- ZhenFund
Compute Resources:
- AMD
- Anyscale
- AWS
- Crusoe Cloud
- Databricks
- DeepInfra
- Dropbox
- Google Cloud
- Lambda Lab
- Nebius
- Novita AI
- NVIDIA
- Replicate
- Roblox
- RunPod
- Sequoia Capital
- Skywork AI
- Trainy
- UC Berkeley
- UC San Diego
- ZhenFund
Slack Sponsor: Anyscale
We also have an official fundraising venue through [OpenCollective](https://opencollective.com/vllm). We plan to use the fund to support the development, maintenance, and adoption of vLLM.
......@@ -43,6 +43,11 @@ extensions = [
"sphinx.ext.autosummary",
"myst_parser",
"sphinxarg.ext",
"sphinx_design",
"sphinx_togglebutton",
]
myst_enable_extensions = [
"colon_fence",
]
# Add any paths that contain templates here, relative to this directory.
......@@ -51,7 +56,7 @@ templates_path = ['_templates']
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This pattern also affects html_static_path and html_extra_path.
exclude_patterns: List[str] = ["**/*.template.md"]
exclude_patterns: List[str] = ["**/*.template.md", "**/*.inc.md"]
# Exclude the prompt "$" when copying code
copybutton_prompt_text = r"\$ "
......@@ -65,6 +70,7 @@ copybutton_prompt_is_regexp = True
html_title = project
html_theme = 'sphinx_book_theme'
html_logo = 'assets/logos/vllm-logo-text-light.png'
html_favicon = 'assets/logos/vllm-logo-only-light.ico'
html_theme_options = {
'path_to_docs': 'docs/source',
'repository_url': 'https://github.com/vllm-project/vllm',
......@@ -191,6 +197,7 @@ def linkcode_resolve(domain, info):
# Mock out external dependencies here, otherwise the autodoc pages may be blank.
autodoc_mock_imports = [
"blake3",
"compressed_tensors",
"cpuinfo",
"cv2",
......@@ -207,7 +214,7 @@ autodoc_mock_imports = [
"tensorizer",
"pynvml",
"outlines",
"xgrammar,"
"xgrammar",
"librosa",
"soundfile",
"gguf",
......
# Dockerfile
We provide a <gh-file:Dockerfile> to construct the image for running an OpenAI compatible server with vLLM.
More information about deploying with Docker can be found [here](../../serving/deploying_with_docker.md).
More information about deploying with Docker can be found [here](#deployment-docker).
Below is a visual representation of the multi-stage Dockerfile. The build graph contains the following nodes:
......@@ -11,17 +11,17 @@ Below is a visual representation of the multi-stage Dockerfile. The build graph
The edges of the build graph represent:
- FROM ... dependencies (with a solid line and a full arrow head)
- `FROM ...` dependencies (with a solid line and a full arrow head)
- COPY --from=... dependencies (with a dashed line and an empty arrow head)
- `COPY --from=...` dependencies (with a dashed line and an empty arrow head)
- RUN --mount=(.\*)from=... dependencies (with a dotted line and an empty diamond arrow head)
- `RUN --mount=(.\*)from=...` dependencies (with a dotted line and an empty diamond arrow head)
> ```{figure} ../../assets/dev/dockerfile-stages-dependency.png
> :::{figure} /assets/contributing/dockerfile-stages-dependency.png
> :align: center
> :alt: query
> :width: 100%
> ```
> :::
>
> Made using: <https://github.com/patrickhoefler/dockerfilegraph>
>
......
(adding-a-new-model)=
(new-model-basic)=
# Adding a New Model
# Implementing a Basic Model
This document provides a high-level guide on integrating a [HuggingFace Transformers](https://github.com/huggingface/transformers) model into vLLM.
```{note}
The complexity of adding a new model depends heavily on the model's architecture.
The process is considerably straightforward if the model shares a similar architecture with an existing model in vLLM.
However, for models that include new operators (e.g., a new attention mechanism), the process can be a bit more complex.
```
```{note}
By default, vLLM models do not support multi-modal inputs. To enable multi-modal support,
please follow [this guide](#enabling-multimodal-inputs) after implementing the model here.
```
```{tip}
If you are encountering issues while integrating your model into vLLM, feel free to open an issue on our [GitHub](https://github.com/vllm-project/vllm/issues) repository.
We will be happy to help you out!
```
## 0. Fork the vLLM repository
Start by forking our [GitHub] repository and then [build it from source](#build-from-source).
This gives you the ability to modify the codebase and test your model.
```{tip}
If you don't want to fork the repository and modify vLLM's codebase, please refer to the "Out-of-Tree Model Integration" section below.
```
This guide walks you through the steps to implement a basic vLLM model.
## 1. Bring your model code
Clone the PyTorch model code from the HuggingFace Transformers repository and put it into the <gh-dir:vllm/model_executor/models> directory.
For instance, vLLM's [OPT model](gh-file:vllm/model_executor/models/opt.py) was adapted from the HuggingFace's [modeling_opt.py](https://github.com/huggingface/transformers/blob/main/src/transformers/models/opt/modeling_opt.py) file.
First, clone the PyTorch model code from the source repository.
For instance, vLLM's [OPT model](gh-file:vllm/model_executor/models/opt.py) was adapted from
HuggingFace's [modeling_opt.py](https://github.com/huggingface/transformers/blob/main/src/transformers/models/opt/modeling_opt.py) file.
```{warning}
When copying the model code, make sure to review and adhere to the code's copyright and licensing terms.
```
:::{warning}
Make sure to review and adhere to the original code's copyright and licensing terms!
:::
## 2. Make your code compatible with vLLM
......@@ -81,7 +57,17 @@ class MyModelForCausalLM(nn.Module):
### Computation Code
Rewrite the {meth}`~torch.nn.Module.forward` method of your model to remove any unnecessary code, such as training-specific code. Modify the input parameters to treat `input_ids` and `positions` as flattened tensors with a single batch size dimension, without a max-sequence length dimension.
- Add a `get_input_embeddings` method inside `MyModel` module that returns the text embeddings given `input_ids`. This is equivalent to directly calling the text embedding layer, but provides a unified interface in case `MyModel` is used within a composite multimodal model.
```python
class MyModel(nn.Module):
...
def get_input_embeddings(self, input_ids: torch.Tensor) -> torch.Tensor:
...
```
- Rewrite the {meth}`~torch.nn.Module.forward` method of your model to remove any unnecessary code, such as training-specific code. Modify the input parameters to treat `input_ids` and `positions` as flattened tensors with a single batch size dimension, without a max-sequence length dimension.
```python
def forward(
......@@ -94,10 +80,10 @@ def forward(
...
```
```{note}
:::{note}
Currently, vLLM supports the basic multi-head attention mechanism and its variant with rotary positional embeddings.
If your model employs a different attention mechanism, you will need to implement a new attention layer in vLLM.
```
:::
For reference, check out our [Llama implementation](gh-file:vllm/model_executor/models/llama.py). vLLM already supports a large number of models. It is recommended to find a model similar to yours and adapt it to your model's architecture. Check out <gh-dir:vllm/model_executor/models> for more examples.
......@@ -105,51 +91,35 @@ For reference, check out our [Llama implementation](gh-file:vllm/model_executor/
If your model is too large to fit into a single GPU, you can use tensor parallelism to manage it.
To do this, substitute your model's linear and embedding layers with their tensor-parallel versions.
For the embedding layer, you can simply replace {class}`torch.nn.Embedding` with {code}`VocabParallelEmbedding`. For the output LM head, you can use {code}`ParallelLMHead`.
For the embedding layer, you can simply replace {class}`torch.nn.Embedding` with `VocabParallelEmbedding`. For the output LM head, you can use `ParallelLMHead`.
When it comes to the linear layers, we provide the following options to parallelize them:
- {code}`ReplicatedLinear`: Replicates the inputs and weights across multiple GPUs. No memory saving.
- {code}`RowParallelLinear`: The input tensor is partitioned along the hidden dimension. The weight matrix is partitioned along the rows (input dimension). An *all-reduce* operation is performed after the matrix multiplication to reduce the results. Typically used for the second FFN layer and the output linear transformation of the attention layer.
- {code}`ColumnParallelLinear`: The input tensor is replicated. The weight matrix is partitioned along the columns (output dimension). The result is partitioned along the column dimension. Typically used for the first FFN layer and the separated QKV transformation of the attention layer in the original Transformer.
- {code}`MergedColumnParallelLinear`: Column-parallel linear that merges multiple {code}`ColumnParallelLinear` operators. Typically used for the first FFN layer with weighted activation functions (e.g., SiLU). This class handles the sharded weight loading logic of multiple weight matrices.
- {code}`QKVParallelLinear`: Parallel linear layer for the query, key, and value projections of the multi-head and grouped-query attention mechanisms. When number of key/value heads are less than the world size, this class replicates the key/value heads properly. This class handles the weight loading and replication of the weight matrices.
- `ReplicatedLinear`: Replicates the inputs and weights across multiple GPUs. No memory saving.
- `RowParallelLinear`: The input tensor is partitioned along the hidden dimension. The weight matrix is partitioned along the rows (input dimension). An *all-reduce* operation is performed after the matrix multiplication to reduce the results. Typically used for the second FFN layer and the output linear transformation of the attention layer.
- `ColumnParallelLinear`: The input tensor is replicated. The weight matrix is partitioned along the columns (output dimension). The result is partitioned along the column dimension. Typically used for the first FFN layer and the separated QKV transformation of the attention layer in the original Transformer.
- `MergedColumnParallelLinear`: Column-parallel linear that merges multiple `ColumnParallelLinear` operators. Typically used for the first FFN layer with weighted activation functions (e.g., SiLU). This class handles the sharded weight loading logic of multiple weight matrices.
- `QKVParallelLinear`: Parallel linear layer for the query, key, and value projections of the multi-head and grouped-query attention mechanisms. When number of key/value heads are less than the world size, this class replicates the key/value heads properly. This class handles the weight loading and replication of the weight matrices.
Note that all the linear layers above take {code}`linear_method` as an input. vLLM will set this parameter according to different quantization schemes to support weight quantization.
Note that all the linear layers above take `linear_method` as an input. vLLM will set this parameter according to different quantization schemes to support weight quantization.
## 4. Implement the weight loading logic
You now need to implement the {code}`load_weights` method in your {code}`*ForCausalLM` class.
This method should load the weights from the HuggingFace's checkpoint file and assign them to the corresponding layers in your model. Specifically, for {code}`MergedColumnParallelLinear` and {code}`QKVParallelLinear` layers, if the original model has separated weight matrices, you need to load the different parts separately.
You now need to implement the `load_weights` method in your `*ForCausalLM` class.
This method should load the weights from the HuggingFace's checkpoint file and assign them to the corresponding layers in your model. Specifically, for `MergedColumnParallelLinear` and `QKVParallelLinear` layers, if the original model has separated weight matrices, you need to load the different parts separately.
## 5. Register your model
Finally, register your {code}`*ForCausalLM` class to the {code}`_VLLM_MODELS` in <gh-file:vllm/model_executor/models/registry.py>.
See [this page](#new-model-registration) for instructions on how to register your new model to be used by vLLM.
## 6. Out-of-Tree Model Integration
## Frequently Asked Questions
You can integrate a model without modifying the vLLM codebase. Steps 2, 3, and 4 are still required, but you can skip steps 1 and 5. Instead, write a plugin to register your model. For general introduction of the plugin system, see [plugin-system](#plugin-system).
### How to support models with interleaving sliding windows?
To register the model, use the following code:
For models with interleaving sliding windows (e.g. `google/gemma-2-2b-it` and `mistralai/Ministral-8B-Instruct-2410`), the scheduler will treat the model as a full-attention model, i.e., kv-cache of all tokens will not be dropped. This is to make sure prefix caching works with these models. Sliding window only appears as a parameter to the attention kernel computation.
```python
from vllm import ModelRegistry
from your_code import YourModelForCausalLM
ModelRegistry.register_model("YourModelForCausalLM", YourModelForCausalLM)
```
To support a model with interleaving sliding windows, we need to take care of the following details:
If your model imports modules that initialize CUDA, consider lazy-importing it to avoid errors like {code}`RuntimeError: Cannot re-initialize CUDA in forked subprocess`:
- Make sure [this line](https://github.com/vllm-project/vllm/blob/996357e4808ca5eab97d4c97c7d25b3073f46aab/vllm/config.py#L308) evaluates `has_interleaved_attention` to `True` for this model, and set `self.hf_text_config.interleaved_sliding_window` to the format of interleaving sliding windows the model can understand. Then, `self.hf_text_config.sliding_window` will be deleted, and the model will be treated as a full-attention model.
- In the modeling code, parse the correct sliding window value for every layer, and pass it to the attention layer's `per_layer_sliding_window` argument. For reference, check [this line](https://github.com/vllm-project/vllm/blob/996357e4808ca5eab97d4c97c7d25b3073f46aab/vllm/model_executor/models/llama.py#L171).
```python
from vllm import ModelRegistry
ModelRegistry.register_model("YourModelForCausalLM", "your_code:YourModelForCausalLM")
```
```{important}
If your model is a multimodal model, ensure the model class implements the {class}`~vllm.model_executor.models.interfaces.SupportsMultiModal` interface.
Read more about that [here](#enabling-multimodal-inputs).
```
```{note}
Although you can directly put these code snippets in your script using `vllm.LLM`, the recommended way is to place these snippets in a vLLM plugin. This ensures compatibility with various vLLM features like distributed inference and the API server.
```
With these two steps, interleave sliding windows should work with the model.
(new-model)=
# Adding a New Model
This section provides more information on how to integrate a [PyTorch](https://pytorch.org/) model into vLLM.
:::{toctree}
:caption: Contents
:maxdepth: 1
basic
registration
tests
multimodal
:::
:::{note}
The complexity of adding a new model depends heavily on the model's architecture.
The process is considerably straightforward if the model shares a similar architecture with an existing model in vLLM.
However, for models that include new operators (e.g., a new attention mechanism), the process can be a bit more complex.
:::
:::{tip}
If you are encountering issues while integrating your model into vLLM, feel free to open a [GitHub issue](https://github.com/vllm-project/vllm/issues)
or ask on our [developer slack](https://slack.vllm.ai).
We will be happy to help you out!
:::
(supports-multimodal)=
# Multi-Modal Support
This document walks you through the steps to extend a basic model so that it accepts [multi-modal inputs](#multimodal-inputs).
## 1. Update the base vLLM model
It is assumed that you have already implemented the model in vLLM according to [these steps](#new-model-basic).
Further update the model as follows:
- Reserve a keyword parameter in {meth}`~torch.nn.Module.forward` for each input tensor that corresponds to a multi-modal input, as shown in the following example:
```diff
def forward(
self,
input_ids: torch.Tensor,
positions: torch.Tensor,
kv_caches: List[torch.Tensor],
attn_metadata: AttentionMetadata,
+ pixel_values: torch.Tensor,
) -> SamplerOutput:
```
More conveniently, you can simply pass `**kwargs` to the {meth}`~torch.nn.Module.forward` method and retrieve the keyword parameters for multimodal inputs from it.
- Implement {meth}`~vllm.model_executor.models.interfaces.SupportsMultiModal.get_multimodal_embeddings` that returns the embeddings from running the multimodal inputs through the multimodal tokenizer of the model. Below we provide a boilerplate of a typical implementation pattern, but feel free to adjust it to your own needs.
```python
class YourModelForImage2Seq(nn.Module):
...
def _process_image_input(self, image_input: YourModelImageInputs) -> torch.Tensor:
assert self.vision_encoder is not None
image_features = self.vision_encoder(image_input)
return self.multi_modal_projector(image_features)
def get_multimodal_embeddings(self, **kwargs: object) -> Optional[NestedTensors]:
# Validate the multimodal input keyword arguments
image_input = self._parse_and_validate_image_input(**kwargs)
if image_input is None:
return None
# Run multimodal inputs through encoder and projector
vision_embeddings = self._process_image_input(image_input)
return vision_embeddings
```
:::{important}
The returned `multimodal_embeddings` must be either a **3D {class}`torch.Tensor`** of shape `(num_items, feature_size, hidden_size)`, or a **list / tuple of 2D {class}`torch.Tensor`'s** of shape `(feature_size, hidden_size)`, so that `multimodal_embeddings[i]` retrieves the embeddings generated from the `i`-th multimodal data item (e.g, image) of the request.
:::
- Implement {meth}`~vllm.model_executor.models.interfaces.SupportsMultiModal.get_input_embeddings` to merge `multimodal_embeddings` with text embeddings from the `input_ids`. If input processing for the model is implemented correctly (see sections below), then you can leverage the utility function we provide to easily merge the embeddings.
```python
from .utils import merge_multimodal_embeddings
class YourModelForImage2Seq(nn.Module):
...
def get_input_embeddings(
self,
input_ids: torch.Tensor,
multimodal_embeddings: Optional[NestedTensors] = None,
) -> torch.Tensor:
# `get_input_embeddings` should already be implemented for the language
# model as one of the requirements of basic vLLM model implementation.
inputs_embeds = self.language_model.get_input_embeddings(input_ids)
if multimodal_embeddings is not None:
inputs_embeds = merge_multimodal_embeddings(
input_ids=input_ids,
inputs_embeds=inputs_embeds,
multimodal_embeddings=multimodal_embeddings,
placeholder_token_id=self.config.image_token_index)
return inputs_embeds
```
- Once the above steps are done, update the model class with the {class}`~vllm.model_executor.models.interfaces.SupportsMultiModal` interface.
```diff
+ from vllm.model_executor.models.interfaces import SupportsMultiModal
- class YourModelForImage2Seq(nn.Module):
+ class YourModelForImage2Seq(nn.Module, SupportsMultiModal):
```
:::{note}
The model class does not have to be named {code}`*ForCausalLM`.
Check out [the HuggingFace Transformers documentation](https://huggingface.co/docs/transformers/model_doc/auto#multimodal) for some examples.
:::
## 2. Specify processing information
Next, create a subclass of {class}`~vllm.multimodal.processing.BaseProcessingInfo`
to provide basic information related to HF processing.
### Maximum number of input items
You need to override the abstract method {meth}`~vllm.multimodal.processing.BaseProcessingInfo.get_supported_mm_limits`
to return the maximum number of input items for each modality supported by the model.
For example, if the model supports any number of images but only one video per prompt:
```python
def get_supported_mm_limits(self) -> Mapping[str, Optional[int]]:
return {"image": None, "video": 1}
```
### Maximum number of placeholder feature tokens
Also, override the abstract method {meth}`~vllm.multimodal.processing.BaseProcessingInfo.get_mm_max_tokens_per_item`
to return the maximum number of placeholder feature tokens per input item for each modality.
When calling the model, the output embeddings from the visual encoder are assigned to the input positions
containing placeholder feature tokens. Therefore, the number of placeholder feature tokens should be equal
to the size of the output embeddings.
:::::{tab-set}
::::{tab-item} Basic example: LLaVA
:sync: llava
Looking at the code of HF's `LlavaForConditionalGeneration`:
```python
# https://github.com/huggingface/transformers/blob/v4.47.1/src/transformers/models/llava/modeling_llava.py#L530-L544
n_image_tokens = (input_ids == self.config.image_token_index).sum().item()
n_image_features = image_features.shape[0] * image_features.shape[1]
if n_image_tokens != n_image_features:
raise ValueError(
f"Image features and image tokens do not match: tokens: {n_image_tokens}, features {n_image_features}"
)
special_image_mask = (
(input_ids == self.config.image_token_index)
.unsqueeze(-1)
.expand_as(inputs_embeds)
.to(inputs_embeds.device)
)
image_features = image_features.to(inputs_embeds.device, inputs_embeds.dtype)
inputs_embeds = inputs_embeds.masked_scatter(special_image_mask, image_features)
```
The number of placeholder feature tokens per image is `image_features.shape[1]`.
`image_features` is calculated inside the `get_image_features` method:
```python
# https://github.com/huggingface/transformers/blob/v4.47.1/src/transformers/models/llava/modeling_llava.py#L290-L300
image_outputs = self.vision_tower(pixel_values, output_hidden_states=True)
selected_image_feature = image_outputs.hidden_states[vision_feature_layer]
if vision_feature_select_strategy == "default":
selected_image_feature = selected_image_feature[:, 1:]
elif vision_feature_select_strategy == "full":
selected_image_feature = selected_image_feature
else:
raise ValueError(f"Unexpected select feature strategy: {self.config.vision_feature_select_strategy}")
image_features = self.multi_modal_projector(selected_image_feature)
return image_features
```
We can infer that `image_features.shape[1]` is based on `image_outputs.hidden_states.shape[1]` from the vision tower
(`CLIPVisionModel` for the [`llava-hf/llava-1.5-7b-hf`](https://huggingface.co/llava-hf/llava-1.5-7b-hf) model).
Moreover, we only need the sequence length (the second dimension of the tensor) to get `image_features.shape[1]`.
The sequence length is determined by the initial hidden states in `CLIPVisionTransformer` since the attention
mechanism doesn't change the sequence length of the output hidden states.
```python
# https://github.com/huggingface/transformers/blob/v4.47.1/src/transformers/models/clip/modeling_clip.py#L1094-L1102
hidden_states = self.embeddings(pixel_values, interpolate_pos_encoding=interpolate_pos_encoding)
hidden_states = self.pre_layrnorm(hidden_states)
encoder_outputs = self.encoder(
inputs_embeds=hidden_states,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
```
To find the sequence length, we turn to the code of `CLIPVisionEmbeddings`:
```python
# https://github.com/huggingface/transformers/blob/v4.47.1/src/transformers/models/clip/modeling_clip.py#L247-L257
target_dtype = self.patch_embedding.weight.dtype
patch_embeds = self.patch_embedding(pixel_values.to(dtype=target_dtype)) # shape = [*, width, grid, grid]
patch_embeds = patch_embeds.flatten(2).transpose(1, 2)
class_embeds = self.class_embedding.expand(batch_size, 1, -1)
embeddings = torch.cat([class_embeds, patch_embeds], dim=1)
if interpolate_pos_encoding:
embeddings = embeddings + self.interpolate_pos_encoding(embeddings, height, width)
else:
embeddings = embeddings + self.position_embedding(self.position_ids)
return embeddings
```
We can infer that `embeddings.shape[1] == self.num_positions`, where
```python
# https://github.com/huggingface/transformers/blob/v4.47.1/src/transformers/models/clip/modeling_clip.py#L195-L196
self.num_patches = (self.image_size // self.patch_size) ** 2
self.num_positions = self.num_patches + 1
```
Overall, the number of placeholder feature tokens for an image can be calculated as:
```python
def get_num_image_tokens(
self,
*,
image_width: int,
image_height: int,
) -> int:
hf_config = self.get_hf_config()
hf_processor = self.get_hf_processor()
image_size = hf_config.vision_config.image_size
patch_size = hf_config.vision_config.patch_size
num_image_tokens = (image_size // patch_size) ** 2 + 1
if hf_processor.vision_feature_select_strategy == "default":
num_image_tokens -= 1
return num_image_tokens
```
Notice that the number of image tokens doesn't depend on the image width and height.
So, we can calculate the maximum number of image tokens using any image size:
```python
def get_image_size_with_most_features(self) -> ImageSize:
hf_config = self.get_hf_config()
width = height = hf_config.image_size
return ImageSize(width=width, height=height)
def get_max_image_tokens(self) -> int:
target_width, target_height = self.get_image_size_with_most_features()
return self.get_num_image_tokens(
image_width=target_width,
image_height=target_height,
)
```
And thus, we can override the method as:
```python
def get_mm_max_tokens_per_item(self, seq_len: int) -> Mapping[str, int]:
return {"image": self.get_max_image_tokens()}
```
:::{note}
Our [actual code](gh-file:vllm/model_executor/models/llava.py) is more abstracted to support vision encoders other than CLIP.
:::
::::
:::::
## 3. Specify dummy inputs
Then, inherit {class}`~vllm.multimodal.profiling.BaseDummyInputsBuilder` to construct dummy inputs for
HF processing as well as memory profiling.
### For memory profiling
Override the abstract method {meth}`~vllm.multimodal.profiling.BaseDummyInputsBuilder.get_dummy_processor_inputs`
to construct dummy inputs for memory profiling. This dummy input should result in the worst-case memory usage of
the model so that vLLM can reserve the correct amount of memory for it.
Assuming that the memory usage increases with the number of tokens, the dummy input can be constructed based
on the code for {meth}`~vllm.multimodal.processing.BaseProcessingInfo.get_mm_max_tokens_per_item`.
::::{tab-set}
:::{tab-item} Basic example: LLaVA
:sync: llava
Making use of the `get_image_size_with_most_features` method implemented in the previous section:
```python
def get_dummy_processor_inputs(
self,
seq_len: int,
mm_counts: Mapping[str, int],
) -> ProcessorInputs:
num_images = mm_counts.get("image", 0)
processor = self.info.get_hf_processor()
image_token = processor.image_token
hf_config = self.get_hf_config()
target_width, target_height = self.info.get_image_size_with_most_features()
mm_data = {
"image":
self._get_dummy_images(width=target_width,
height=target_height,
num_images=num_images)
}
return ProcessorInputs(
prompt_text=image_token * num_images,
mm_data=mm_data,
)
```
:::
::::
## 4. Specify processing details
Afterwards, create a subclass of {class}`~vllm.multimodal.processing.BaseMultiModalProcessor`
to fill in the missing details about HF processing.
:::{seealso}
[Multi-Modal Data Processing](#mm-processing)
:::
### Multi-modal fields
Override {class}`~vllm.multimodal.processing.BaseMultiModalProcessor._get_mm_fields_config` to
return a schema of the tensors outputted by the HF processor that are related to the input multi-modal items.
:::::{tab-set}
::::{tab-item} Basic example: LLaVA
:sync: llava
Looking at the model's `forward` method:
```python
# https://github.com/huggingface/transformers/blob/v4.47.1/src/transformers/models/llava/modeling_llava.py#L387-L404
def forward(
self,
input_ids: torch.LongTensor = None,
pixel_values: torch.FloatTensor = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
vision_feature_layer: Optional[int] = None,
vision_feature_select_strategy: Optional[str] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
cache_position: Optional[torch.LongTensor] = None,
num_logits_to_keep: int = 0,
) -> Union[Tuple, LlavaCausalLMOutputWithPast]:
```
The only related keyword argument is `pixel_values` which directly corresponds to input images.
The shape of `pixel_values` is `(N, C, H, W)` where `N` is the number of images.
So, we override the method as follows:
```python
def _get_mm_fields_config(
self,
hf_inputs: BatchFeature,
hf_processor_mm_kwargs: Mapping[str, object],
) -> Mapping[str, MultiModalFieldConfig]:
return dict(
pixel_values=MultiModalFieldConfig.batched("image"),
)
```
:::{note}
Our [actual code](gh-file:vllm/model_executor/models/llava.py) additionally supports
pre-computed image embeddings, which can be passed to be model via the `image_embeds` argument.
:::
::::
:::::
### Prompt replacements
Override {class}`~vllm.multimodal.processing.BaseMultiModalProcessor._get_prompt_replacements` to
return a list of {class}`~vllm.multimodal.processing.PromptReplacement` instances.
Each {class}`~vllm.multimodal.processing.PromptReplacement` instance specifies a find-and-replace
operation performed by the HF processor.
::::{tab-set}
:::{tab-item} Basic example: LLaVA
:sync: llava
Looking at HF's `LlavaProcessor`:
```python
# https://github.com/huggingface/transformers/blob/v4.47.1/src/transformers/models/llava/processing_llava.py#L167-L170
prompt_strings = []
for sample in text:
sample = sample.replace(self.image_token, self.image_token * num_image_tokens)
prompt_strings.append(sample)
```
It simply repeats each input `image_token` a number of times equal to the number of placeholder feature tokens (`num_image_tokens`).
Based on this, we override the method as follows:
```python
def _get_prompt_replacements(
self,
mm_items: MultiModalDataItems,
hf_processor_mm_kwargs: Mapping[str, object],
out_mm_kwargs: MultiModalKwargs,
) -> list[PromptReplacement]:
hf_config = self.info.get_hf_config()
image_token_id = hf_config.image_token_index
def get_replacement(item_idx: int):
images = mm_items.get_items("image", ImageProcessorItems)
image_size = images.get_image_size(item_idx)
num_image_tokens = self.info.get_num_image_tokens(
image_width=image_size.width,
image_height=image_size.height,
)
return [image_token_id] * num_image_tokens
return [
PromptReplacement(
modality="image",
target=[image_token_id],
replacement=get_replacement,
),
]
```
:::
::::
## 5. Register processor-related classes
After you have defined {class}`~vllm.multimodal.processing.BaseProcessingInfo` (Step 2),
{class}`~vllm.multimodal.profiling.BaseDummyInputsBuilder` (Step 3),
and {class}`~vllm.multimodal.processing.BaseMultiModalProcessor` (Step 4),
decorate the model class with {meth}`MULTIMODAL_REGISTRY.register_processor <vllm.multimodal.registry.MultiModalRegistry.register_processor>`
to register them to the multi-modal registry:
```diff
from vllm.model_executor.models.interfaces import SupportsMultiModal
+ from vllm.multimodal import MULTIMODAL_REGISTRY
+ @MULTIMODAL_REGISTRY.register_processor(YourMultiModalProcessor,
+ info=YourProcessingInfo,
+ dummy_inputs=YourDummyInputsBuilder)
class YourModelForImage2Seq(nn.Module, SupportsMultiModal):
```
(new-model-registration)=
# Registering a Model to vLLM
vLLM relies on a model registry to determine how to run each model.
A list of pre-registered architectures can be found [here](#supported-models).
If your model is not on this list, you must register it to vLLM.
This page provides detailed instructions on how to do so.
## Built-in models
To add a model directly to the vLLM library, start by forking our [GitHub repository](https://github.com/vllm-project/vllm) and then [build it from source](#build-from-source).
This gives you the ability to modify the codebase and test your model.
After you have implemented your model (see [tutorial](#new-model-basic)), put it into the <gh-dir:vllm/model_executor/models> directory.
Then, add your model class to `_VLLM_MODELS` in <gh-file:vllm/model_executor/models/registry.py> so that it is automatically registered upon importing vLLM.
Finally, update our [list of supported models](#supported-models) to promote your model!
:::{important}
The list of models in each section should be maintained in alphabetical order.
:::
## Out-of-tree models
You can load an external model using a plugin without modifying the vLLM codebase.
:::{seealso}
[vLLM's Plugin System](#plugin-system)
:::
To register the model, use the following code:
```python
from vllm import ModelRegistry
from your_code import YourModelForCausalLM
ModelRegistry.register_model("YourModelForCausalLM", YourModelForCausalLM)
```
If your model imports modules that initialize CUDA, consider lazy-importing it to avoid errors like `RuntimeError: Cannot re-initialize CUDA in forked subprocess`:
```python
from vllm import ModelRegistry
ModelRegistry.register_model("YourModelForCausalLM", "your_code:YourModelForCausalLM")
```
:::{important}
If your model is a multimodal model, ensure the model class implements the {class}`~vllm.model_executor.models.interfaces.SupportsMultiModal` interface.
Read more about that [here](#supports-multimodal).
:::
:::{note}
Although you can directly put these code snippets in your script using `vllm.LLM`, the recommended way is to place these snippets in a vLLM plugin. This ensures compatibility with various vLLM features like distributed inference and the API server.
:::
(new-model-tests)=
# Writing Unit Tests
This page explains how to write unit tests to verify the implementation of your model.
## Required Tests
These tests are necessary to get your PR merged into vLLM library.
Without them, the CI for your PR will fail.
### Model loading
Include an example HuggingFace repository for your model in <gh-file:tests/models/registry.py>.
This enables a unit test that loads dummy weights to ensure that the model can be initialized in vLLM.
:::{important}
The list of models in each section should be maintained in alphabetical order.
:::
:::{tip}
If your model requires a development version of HF Transformers, you can set
`min_transformers_version` to skip the test in CI until the model is released.
:::
## Optional Tests
These tests are optional to get your PR merged into vLLM library.
Passing these tests provides more confidence that your implementation is correct, and helps avoid future regressions.
### Model correctness
These tests compare the model outputs of vLLM against [HF Transformers](https://github.com/huggingface/transformers). You can add new tests under the subdirectories of <gh-dir:tests/models>.
#### Generative models
For [generative models](#generative-models), there are two levels of correctness tests, as defined in <gh-file:tests/models/utils.py>:
- Exact correctness (`check_outputs_equal`): The text outputted by vLLM should exactly match the text outputted by HF.
- Logprobs similarity (`check_logprobs_close`): The logprobs outputted by vLLM should be in the top-k logprobs outputted by HF, and vice versa.
#### Pooling models
For [pooling models](#pooling-models), we simply check the cosine similarity, as defined in <gh-file:tests/models/embedding/utils.py>.
(mm-processing-tests)=
### Multi-modal processing
#### Common tests
Adding your model to <gh-file:tests/models/multimodal/processing/test_common.py> verifies that the following input combinations result in the same outputs:
- Text + multi-modal data
- Tokens + multi-modal data
- Text + cached multi-modal data
- Tokens + cached multi-modal data
#### Model-specific tests
You can add a new file under <gh-dir:tests/models/multimodal/processing> to run tests that only apply to your model.
For example, if the HF processor for your model accepts user-specified keyword arguments, you can verify that the keyword arguments are being applied correctly, such as in <gh-file:tests/models/multimodal/processing/test_phi3v.py>.
......@@ -25,27 +25,27 @@ Check out the [building from source](#build-from-source) documentation for detai
```bash
pip install -r requirements-dev.txt
# linting and formatting
bash format.sh
# Static type checking
mypy
# Linting, formatting and static type checking
pre-commit install --hook-type pre-commit --hook-type commit-msg
# You can manually run pre-commit with
pre-commit run --all-files
# Unit tests
pytest tests/
```
```{note}
Currently, the repository does not pass the `mypy` tests.
```
# Contribution Guidelines
:::{note}
Currently, the repository is not fully checked by `mypy`.
:::
## Issues
If you encounter a bug or have a feature request, please [search existing issues](https://github.com/vllm-project/vllm/issues?q=is%3Aissue) first to see if it has already been reported. If not, please [file a new issue](https://github.com/vllm-project/vllm/issues/new/choose), providing as much relevant information as possible.
```{important}
:::{important}
If you discover a security vulnerability, please follow the instructions [here](gh-file:SECURITY.md#reporting-a-vulnerability).
```
:::
## Pull Requests & Code Reviews
......@@ -81,16 +81,17 @@ appropriately to indicate the type of change. Please use one of the following:
- `[Misc]` for PRs that do not fit the above categories. Please use this
sparingly.
```{note}
:::{note}
If the PR spans more than one category, please include all relevant prefixes.
```
:::
### Code Quality
The PR needs to meet the following code quality standards:
- We adhere to [Google Python style guide](https://google.github.io/styleguide/pyguide.html) and [Google C++ style guide](https://google.github.io/styleguide/cppguide.html).
- Pass all linter checks. Please use <gh-file:format.sh> to format your code.
- Pass all linter checks. Please use `pre-commit` to format your code. See
<https://pre-commit.com/#usage> if `pre-commit` is new to you.
- The code needs to be well-documented to ensure future contributors can easily
understand the code.
- Include sufficient tests to ensure the project stays correct and robust. This
......
......@@ -6,27 +6,27 @@ The OpenAI server also needs to be started with the `VLLM_TORCH_PROFILER_DIR` en
When using `benchmarks/benchmark_serving.py`, you can enable profiling by passing the `--profile` flag.
```{warning}
:::{warning}
Only enable profiling in a development environment.
```
:::
Traces can be visualized using <https://ui.perfetto.dev/>.
```{tip}
:::{tip}
Only send a few requests through vLLM when profiling, as the traces can get quite large. Also, no need to untar the traces, they can be viewed directly.
```
:::
```{tip}
:::{tip}
To stop the profiler - it flushes out all the profile trace files to the directory. This takes time, for example for about 100 requests worth of data for a llama 70b, it takes about 10 minutes to flush out on a H100.
Set the env variable VLLM_RPC_TIMEOUT to a big number before you start the server. Say something like 30 minutes.
`export VLLM_RPC_TIMEOUT=1800000`
```
:::
## Example commands and usage
### Offline Inference
Refer to <gh-file:examples/offline_inference_with_profiler.py> for an example.
Refer to <gh-file:examples/offline_inference/simple_profiling.py> for an example.
### OpenAI Server
......
# Vulnerability Management
## Reporting Vulnerabilities
As mentioned in the [security
policy](https://github.com/vllm-project/vllm/tree/main/SECURITY.md), security
vulnerabilities may be reported privately to the project via
[GitHub](https://github.com/vllm-project/vllm/security/advisories/new).
## Vulnerability Management Team
Once a vulnerability has been reported to the project, the Vulnerability
Management Team (VMT) is responsible for managing the vulnerability. The VMT is
responsible for:
- Triaging the vulnerability.
- Coordinating with reporters and project maintainers on vulnerability analysis
and resolution.
- Drafting of security advisories for confirmed vulnerabilities, as appropriate.
- Coordination with project maintainers on a coordinated release of the fix and
security advisory.
### Security Advisories
Advisories are published via GitHub through the same system used to report
vulnerabilities. More information on the process can be found in the [GitHub
documentation](https://docs.github.com/en/code-security/security-advisories/working-with-repository-security-advisories/about-repository-security-advisories).
### Team Members
We prefer to keep all vulnerability-related communication on the security report
on GitHub. However, if you need to contact the VMT directly for an urgent issue,
you may contact the following individuals:
- Simon Mo - simon.mo@hey.com
- Russell Bryant - rbryant@redhat.com
## Slack Discussion
You may use the `#security` channel in the [VLLM Slack](https://slack.vllm.ai)
to discuss security-related topics. However, please do not disclose any
vulnerabilities in this channel. If you need to report a vulnerability, please
use the GitHub security advisory system or contact a VMT member privately.
## Vulnerability Disclosure
The process for disclosing vulnerabilities is the following:
- The VMT will work with the project maintainers to develop a fix for the
vulnerability.
- The VMT will coordinate with the reporter and project maintainers to prepare a
security advisory that adequately describes the vulnerability and its impact.
- The VMT will coordinate with the project maintainers to publish a fix and
release an update that includes that fix.
- The VMT will publish the security advisory on GitHub. Release notes will be
updated to include a reference to the security advisory.
The VMT and project maintainers will work to minimize the amount of time in
between disclosing any public information about the vulnerability and making a
release and advisory available.
(deploying-with-docker)=
(deployment-docker)=
# Deploying with Docker
# Using Docker
(deployment-docker-pre-built-image)=
## Use vLLM's Official Docker Image
......@@ -17,37 +19,44 @@ $ docker run --runtime nvidia --gpus all \
--model mistralai/Mistral-7B-v0.1
```
```{note}
You can add any other <project:#engine-args> you need after the image tag (`vllm/vllm-openai:latest`).
:::{note}
You can either use the `ipc=host` flag or `--shm-size` flag to allow the
container to access the host's shared memory. vLLM uses PyTorch, which uses shared
memory to share data between processes under the hood, particularly for tensor parallel inference.
```
:::
(deployment-docker-build-image-from-source)=
## Building vLLM's Docker Image from Source
You can build and run vLLM from source via the provided <gh-file:Dockerfile>. To build vLLM:
```console
$ # optionally specifies: --build-arg max_jobs=8 --build-arg nvcc_threads=2
$ DOCKER_BUILDKIT=1 docker build . --target vllm-openai --tag vllm/vllm-openai
# optionally specifies: --build-arg max_jobs=8 --build-arg nvcc_threads=2
DOCKER_BUILDKIT=1 docker build . --target vllm-openai --tag vllm/vllm-openai
```
```{note}
:::{note}
By default vLLM will build for all GPU types for widest distribution. If you are just building for the
current GPU type the machine is running on, you can add the argument `--build-arg torch_cuda_arch_list=""`
for vLLM to find the current GPU type and build for that.
```
If you are using Podman instead of Docker, you might need to disable SELinux labeling by
adding `--security-opt label=disable` when running `podman build` command to avoid certain [existing issues](https://github.com/containers/buildah/discussions/4184).
:::
## Building for Arm64/aarch64
A docker container can be built for aarch64 systems such as the Nvidia Grace-Hopper. At time of this writing, this requires the use
of PyTorch Nightly and should be considered **experimental**. Using the flag `--platform "linux/arm64"` will attempt to build for arm64.
```{note}
:::{note}
Multiple modules must be compiled, so this process can take a while. Recommend using `--build-arg max_jobs=` & `--build-arg nvcc_threads=`
flags to speed up build process. However, ensure your `max_jobs` is substantially larger than `nvcc_threads` to get the most benefits.
Keep an eye on memory usage with parallel jobs as it can be substantial (see example below).
```
:::
```console
# Example of building on Nvidia GH200 server. (Memory usage: ~15GB, Build time: ~1475s / ~25 min, Image size: 6.93GB)
......@@ -76,6 +85,6 @@ $ docker run --runtime nvidia --gpus all \
The argument `vllm/vllm-openai` specifies the image to run, and should be replaced with the name of the custom-built image (the `-t` tag from the build command).
```{note}
:::{note}
**For version 0.4.1 and 0.4.2 only** - the vLLM docker images under these versions are supposed to be run under the root user since a library under the root user's home directory, i.e. `/root/.config/vllm/nccl/cu12/libnccl.so.2.18.1` is required to be loaded during runtime. If you are running the container under a different user, you may need to first change the permissions of the library (and all the parent directories) to allow the user to access it, then run vLLM with environment variable `VLLM_NCCL_SO_PATH=/root/.config/vllm/nccl/cu12/libnccl.so.2.18.1` .
```
:::
(deploying-with-bentoml)=
(deployment-bentoml)=
# Deploying with BentoML
# BentoML
[BentoML](https://github.com/bentoml/BentoML) allows you to deploy a large language model (LLM) server with vLLM as the backend, which exposes OpenAI-compatible endpoints. You can serve the model locally or containerize it as an OCI-complicant image and deploy it on Kubernetes.
[BentoML](https://github.com/bentoml/BentoML) allows you to deploy a large language model (LLM) server with vLLM as the backend, which exposes OpenAI-compatible endpoints. You can serve the model locally or containerize it as an OCI-compliant image and deploy it on Kubernetes.
For details, see the tutorial [vLLM inference in the BentoML documentation](https://docs.bentoml.com/en/latest/use-cases/large-language-models/vllm.html).
(deploying-with-cerebrium)=
(deployment-cerebrium)=
# Deploying with Cerebrium
# Cerebrium
```{raw} html
:::{raw} html
<p align="center">
<img src="https://i.ibb.co/hHcScTT/Screenshot-2024-06-13-at-10-14-54.png" alt="vLLM_plus_cerebrium"/>
</p>
```
:::
vLLM can be run on a cloud based GPU machine with [Cerebrium](https://www.cerebrium.ai/), a serverless AI infrastructure platform that makes it easier for companies to build and deploy AI based applications.
To install the Cerebrium client, run:
```console
$ pip install cerebrium
$ cerebrium login
pip install cerebrium
cerebrium login
```
Next, create your Cerebrium project, run:
```console
$ cerebrium init vllm-project
cerebrium init vllm-project
```
Next, to install the required packages, add the following to your cerebrium.toml:
......@@ -33,7 +33,7 @@ docker_base_image_url = "nvidia/cuda:12.1.1-runtime-ubuntu22.04"
vllm = "latest"
```
Next, let us add our code to handle inference for the LLM of your choice(`mistralai/Mistral-7B-Instruct-v0.1` for this example), add the following code to your main.py\`:
Next, let us add our code to handle inference for the LLM of your choice (`mistralai/Mistral-7B-Instruct-v0.1` for this example), add the following code to your `main.py`:
```python
from vllm import LLM, SamplingParams
......@@ -55,13 +55,13 @@ def run(prompts: list[str], temperature: float = 0.8, top_p: float = 0.95):
return {"results": results}
```
Then, run the following code to deploy it to the cloud
Then, run the following code to deploy it to the cloud:
```console
$ cerebrium deploy
cerebrium deploy
```
If successful, you should be returned a CURL command that you can call inference against. Just remember to end the url with the function name you are calling (in our case /run)
If successful, you should be returned a CURL command that you can call inference against. Just remember to end the url with the function name you are calling (in our case`/run`)
```python
curl -X POST https://api.cortex.cerebrium.ai/v4/p-xxxxxx/vllm/run \
......
(deploying-with-dstack)=
(deployment-dstack)=
# Deploying with dstack
# dstack
```{raw} html
:::{raw} html
<p align="center">
<img src="https://i.ibb.co/71kx6hW/vllm-dstack.png" alt="vLLM_plus_dstack"/>
</p>
```
:::
vLLM can be run on a cloud based GPU machine with [dstack](https://dstack.ai/), an open-source framework for running LLMs on any cloud. This tutorial assumes that you have already configured credentials, gateway, and GPU quotas on your cloud environment.
To install dstack client, run:
```console
$ pip install "dstack[all]
$ dstack server
pip install "dstack[all]
dstack server
```
Next, to configure your dstack project, run:
```console
$ mkdir -p vllm-dstack
$ cd vllm-dstack
$ dstack init
mkdir -p vllm-dstack
cd vllm-dstack
dstack init
```
Next, to provision a VM instance with LLM of your choice(`NousResearch/Llama-2-7b-chat-hf` for this example), create the following `serve.dstack.yml` file for the dstack `Service`:
Next, to provision a VM instance with LLM of your choice (`NousResearch/Llama-2-7b-chat-hf` for this example), create the following `serve.dstack.yml` file for the dstack `Service`:
```yaml
type: service
......@@ -97,6 +97,6 @@ completion = client.chat.completions.create(
print(completion.choices[0].message.content)
```
```{note}
:::{note}
dstack automatically handles authentication on the gateway using dstack's tokens. Meanwhile, if you don't want to configure a gateway, you can provision dstack `Task` instead of `Service`. The `Task` is for development purpose only. If you want to know more about hands-on materials how to serve vLLM using dstack, check out [this repository](https://github.com/dstackai/dstack-examples/tree/main/deployment/vllm)
```
:::
(deployment-helm)=
# Helm
A Helm chart to deploy vLLM for Kubernetes
Helm is a package manager for Kubernetes. It will help you to deploy vLLM on k8s and automate the deployment of vLLMm Kubernetes applications. With Helm, you can deploy the same framework architecture with different configurations to multiple namespaces by overriding variables values.
This guide will walk you through the process of deploying vLLM with Helm, including the necessary prerequisites, steps for helm install and documentation on architecture and values file.
## Prerequisites
Before you begin, ensure that you have the following:
- A running Kubernetes cluster
- NVIDIA Kubernetes Device Plugin (`k8s-device-plugin`): This can be found at [https://github.com/NVIDIA/k8s-device-plugin](https://github.com/NVIDIA/k8s-device-plugin)
- Available GPU resources in your cluster
- S3 with the model which will be deployed
## Installing the chart
To install the chart with the release name `test-vllm`:
```console
helm upgrade --install --create-namespace --namespace=ns-vllm test-vllm . -f values.yaml --set secrets.s3endpoint=$ACCESS_POINT --set secrets.s3bucketname=$BUCKET --set secrets.s3accesskeyid=$ACCESS_KEY --set secrets.s3accesskey=$SECRET_KEY
```
## Uninstalling the Chart
To uninstall the `test-vllm` deployment:
```console
helm uninstall test-vllm --namespace=ns-vllm
```
The command removes all the Kubernetes components associated with the
chart **including persistent volumes** and deletes the release.
## Architecture
:::{image} /assets/deployment/architecture_helm_deployment.png
:::
## Values
:::{list-table}
:widths: 25 25 25 25
:header-rows: 1
- * Key
* Type
* Default
* Description
- * autoscaling
* object
* {"enabled":false,"maxReplicas":100,"minReplicas":1,"targetCPUUtilizationPercentage":80}
* Autoscaling configuration
- * autoscaling.enabled
* bool
* false
* Enable autoscaling
- * autoscaling.maxReplicas
* int
* 100
* Maximum replicas
- * autoscaling.minReplicas
* int
* 1
* Minimum replicas
- * autoscaling.targetCPUUtilizationPercentage
* int
* 80
* Target CPU utilization for autoscaling
- * configs
* object
* {}
* Configmap
- * containerPort
* int
* 8000
* Container port
- * customObjects
* list
* []
* Custom Objects configuration
- * deploymentStrategy
* object
* {}
* Deployment strategy configuration
- * externalConfigs
* list
* []
* External configuration
- * extraContainers
* list
* []
* Additional containers configuration
- * extraInit
* object
* {"pvcStorage":"1Gi","s3modelpath":"relative_s3_model_path/opt-125m", "awsEc2MetadataDisabled": true}
* Additional configuration for the init container
- * extraInit.pvcStorage
* string
* "50Gi"
* Storage size of the s3
- * extraInit.s3modelpath
* string
* "relative_s3_model_path/opt-125m"
* Path of the model on the s3 which hosts model weights and config files
- * extraInit.awsEc2MetadataDisabled
* boolean
* true
* Disables the use of the Amazon EC2 instance metadata service
- * extraPorts
* list
* []
* Additional ports configuration
- * gpuModels
* list
* ["TYPE_GPU_USED"]
* Type of gpu used
- * image
* object
* {"command":["vllm","serve","/data/","--served-model-name","opt-125m","--host","0.0.0.0","--port","8000"],"repository":"vllm/vllm-openai","tag":"latest"}
* Image configuration
- * image.command
* list
* ["vllm","serve","/data/","--served-model-name","opt-125m","--host","0.0.0.0","--port","8000"]
* Container launch command
- * image.repository
* string
* "vllm/vllm-openai"
* Image repository
- * image.tag
* string
* "latest"
* Image tag
- * livenessProbe
* object
* {"failureThreshold":3,"httpGet":{"path":"/health","port":8000},"initialDelaySeconds":15,"periodSeconds":10}
* Liveness probe configuration
- * livenessProbe.failureThreshold
* int
* 3
* Number of times after which if a probe fails in a row, Kubernetes considers that the overall check has failed: the container is not alive
- * livenessProbe.httpGet
* object
* {"path":"/health","port":8000}
* Configuration of the Kubelet http request on the server
- * livenessProbe.httpGet.path
* string
* "/health"
* Path to access on the HTTP server
- * livenessProbe.httpGet.port
* int
* 8000
* Name or number of the port to access on the container, on which the server is listening
- * livenessProbe.initialDelaySeconds
* int
* 15
* Number of seconds after the container has started before liveness probe is initiated
- * livenessProbe.periodSeconds
* int
* 10
* How often (in seconds) to perform the liveness probe
- * maxUnavailablePodDisruptionBudget
* string
* ""
* Disruption Budget Configuration
- * readinessProbe
* object
* {"failureThreshold":3,"httpGet":{"path":"/health","port":8000},"initialDelaySeconds":5,"periodSeconds":5}
* Readiness probe configuration
- * readinessProbe.failureThreshold
* int
* 3
* Number of times after which if a probe fails in a row, Kubernetes considers that the overall check has failed: the container is not ready
- * readinessProbe.httpGet
* object
* {"path":"/health","port":8000}
* Configuration of the Kubelet http request on the server
- * readinessProbe.httpGet.path
* string
* "/health"
* Path to access on the HTTP server
- * readinessProbe.httpGet.port
* int
* 8000
* Name or number of the port to access on the container, on which the server is listening
- * readinessProbe.initialDelaySeconds
* int
* 5
* Number of seconds after the container has started before readiness probe is initiated
- * readinessProbe.periodSeconds
* int
* 5
* How often (in seconds) to perform the readiness probe
- * replicaCount
* int
* 1
* Number of replicas
- * resources
* object
* {"limits":{"cpu":4,"memory":"16Gi","nvidia.com/gpu":1},"requests":{"cpu":4,"memory":"16Gi","nvidia.com/gpu":1}}
* Resource configuration
- * resources.limits."nvidia.com/gpu"
* int
* 1
* Number of gpus used
- * resources.limits.cpu
* int
* 4
* Number of CPUs
- * resources.limits.memory
* string
* "16Gi"
* CPU memory configuration
- * resources.requests."nvidia.com/gpu"
* int
* 1
* Number of gpus used
- * resources.requests.cpu
* int
* 4
* Number of CPUs
- * resources.requests.memory
* string
* "16Gi"
* CPU memory configuration
- * secrets
* object
* {}
* Secrets configuration
- * serviceName
* string
*
* Service name
- * servicePort
* int
* 80
* Service port
- * labels.environment
* string
* test
* Environment name
- * labels.release
* string
* test
* Release name
:::
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