Add model serving framework instructions (#1880)
* Add model serving framework instructions Signed-off-by: Naarcha-AWS <naarcha@amazon.com> * Change title to match file name Signed-off-by: Naarcha-AWS <naarcha@amazon.com> * Update _ml-commons-plugin/model-serving-framework.md Co-authored-by: Yaliang Wu <ylwu@amazon.com> * Update _ml-commons-plugin/model-serving-framework.md Co-authored-by: Yaliang Wu <ylwu@amazon.com> * Update _ml-commons-plugin/model-serving-framework.md * Update _ml-commons-plugin/model-serving-framework.md * Update _ml-commons-plugin/model-serving-framework.md * Update _ml-commons-plugin/model-serving-framework.md * Update _ml-commons-plugin/model-serving-framework.md * Update _ml-commons-plugin/model-serving-framework.md * Update _ml-commons-plugin/model-serving-framework.md * Add developer feedback. Fix typos Signed-off-by: Naarcha-AWS <naarcha@amazon.com> * Update _ml-commons-plugin/model-serving-framework.md * Add more review feedback Signed-off-by: Naarcha-AWS <naarcha@amazon.com> * Add profile API Signed-off-by: Naarcha-AWS <naarcha@amazon.com> * Add note about model limitations Signed-off-by: Naarcha-AWS <naarcha@amazon.com> * Another round of feedback Signed-off-by: Naarcha-AWS <naarcha@amazon.com> * Add final bits of Yalings feedback Signed-off-by: Naarcha-AWS <naarcha@amazon.com> Signed-off-by: Naarcha-AWS <naarcha@amazon.com> Co-authored-by: Yaliang Wu <ylwu@amazon.com>
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@ -115,9 +115,193 @@ The API returns information on the model, the algorithm used, and the content fo
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}
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}
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```
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```
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## Load a model
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Use the upload operation to upload a custom model and into a model index. ML commons splits the model into smaller chunks and saves those chunks into the model's index.
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```json
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POST /_plugins/_ml/models/_upload
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```
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### Request fields
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All request fields are required.
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Field | Data Type | Description
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:--- | :--- | :---
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`name`| string | The name of the model. |
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`version` | integer | The version number of the model. |
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`model_format` | string | The portable format of the model file. Currently only supports `TORCH_SCRIPT`. |
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`model_config` | json object | The model's configuration, including the `model_type`, `embedding_dimension`, and `framework_type`. `all_config` is an optional JSON string which contains all model configurations. |
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`url` | string | The URL which contains the model. |
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### Example
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The following sample request uploads version `1.0.0` of an NLP sentence transformation model named `all-MiniLM-L6-v2`.
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```json
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POST /_plugins/_ml/models/_upload
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{
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"name": "all-MiniLM-L6-v2",
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"version": "1.0.0",
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"description": "test model",
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"model_format": "TORCH_SCRIPT",
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"model_config": {
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"model_type": "bert",
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"embedding_dimension": 384,
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"framework_type": "sentence_transformers",
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},
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"url": "https://github.com/opensearch-project/ml-commons/raw/2.x/ml-algorithms/src/test/resources/org/opensearch/ml/engine/algorithms/text_embedding/all-MiniLM-L6-v2_torchscript_sentence-transformer.zip?raw=true"
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}
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```
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### Response
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OpenSearch responds with the `task_id` and task `status`.
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```json
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{
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"task_id" : "ew8I44MBhyWuIwnfvDIH",
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"status" : "CREATED"
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}
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```
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To see the status of your model upload, enter the `task_id` into the [task API]({{site.url}}{{site.baseurl}}/ml-commons-plugin/api#get-task-information). Use the `model_id` from the task response once the upload is complete. For example:
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```json
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{
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"model_id" : "WWQI44MBbzI2oUKAvNUt",
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"task_type" : "UPLOAD_MODEL",
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"function_name" : "TEXT_EMBEDDING",
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"state" : "COMPLETED",
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"worker_node" : "KzONM8c8T4Od-NoUANQNGg",
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"create_time" : 1665961344003,
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"last_update_time" : 1665961373047,
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"is_async" : true
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}
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```
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## Load model
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The load model operation reads the model's chunks from the model index, then creates an instance of the model to cache into memory. This operation requires the `model_id`.
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```json
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POST /_plugins/_ml/models/<model_id>/_load
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```
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### Example: Load into all available ML nodes
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In this example request, OpenSearch loads the model into any available OpenSearch ML node:
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```json
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POST /_plugins/_ml/models/WWQI44MBbzI2oUKAvNUt/_load
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```
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### Example: Load into a specific node
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If you want to reserve the memory of other ML nodes within your cluster, you can load your model into a specific node(s) by specifying the `node_ids` in the request body:
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```json
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POST /_plugins/_ml/models/WWQI44MBbzI2oUKAvNUt/_load
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{
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"node_ids": ["4PLK7KJWReyX0oWKnBA8nA"]
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}
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```
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### Response
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```json
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{
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"task_id" : "hA8P44MBhyWuIwnfvTKP",
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"status" : "CREATED"
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}
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```
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## Unload a model
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To unload a model from memory, use the unload operation.
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```json
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POST /_plugins/_ml/models/<model_id>/_unload
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```
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### Example: Unload model from all ML nodes
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```json
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POST /_plugins/_ml/models/MGqJhYMBbbh0ushjm8p_/_unload
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```
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### Response: Unload model from all ML nodes
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```json
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{
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"s5JwjZRqTY6nOT0EvFwVdA": {
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"stats": {
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"MGqJhYMBbbh0ushjm8p_": "unloaded"
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}
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}
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}
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```
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### Example: Unload specific models from specific nodes
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```json
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POST /_plugins/_ml/models/_unload
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{
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"node_ids": ["sv7-3CbwQW-4PiIsDOfLxQ"],
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"model_ids": ["KDo2ZYQB-v9VEDwdjkZ4"]
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}
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```
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### Response: Unload specific models from specific nodes
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```json
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{
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"sv7-3CbwQW-4PiIsDOfLxQ" : {
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"stats" : {
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"KDo2ZYQB-v9VEDwdjkZ4" : "unloaded"
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}
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}
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}
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```
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### Response: Unload all models from specific nodes
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```json
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{
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"sv7-3CbwQW-4PiIsDOfLxQ" : {
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"stats" : {
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"KDo2ZYQB-v9VEDwdjkZ4" : "unloaded",
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"-8o8ZYQBvrLMaN0vtwzN" : "unloaded"
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}
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}
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}
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```
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### Example: Unload specific models from all nodes
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```json
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{
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"model_ids": ["KDo2ZYQB-v9VEDwdjkZ4"]
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}
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```
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### Response: Unload specific models from all nodes
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```json
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{
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"sv7-3CbwQW-4PiIsDOfLxQ" : {
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"stats" : {
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"KDo2ZYQB-v9VEDwdjkZ4" : "unloaded"
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}
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}
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}
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```
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## Search model
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## Search model
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Use this command to search models you're already created.
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Use this command to search models you've already created.
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```json
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```json
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@ -230,6 +414,87 @@ The API returns the following:
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}
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}
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```
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```
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## Profile
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Returns runtime information on ML tasks and models. This operation can help debug issues with models at runtime.
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```json
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GET /_plugins/_ml/profile
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GET /_plugins/_ml/profile/models
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GET /_plugins/_ml/profile/tasks
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```
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### Path parameters
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Parameter | Data Type | Description
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:--- | :--- | :---
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model_id | string | Returns runtime data for a specific model. You can string together multiple `model_id`s to return multiple model profiles.
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tasks | string | Returns runtime data for a specific task. You can string together multiple `task_id`s to return multiple task profiles.
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### Request fields
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All profile body request fields are optional.
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Field | Data Type | Description
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:--- | :--- | :---
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node_ids | string | Returns all tasks and profiles from a specific node.
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model_ids | string | Returns runtime data for a specific model. You can string together multiple `model_id`s to return multiple model profiles.
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task_ids | string | Returns runtime data for a specific task. You can string together multiple `task_id`s to return multiple task profiles.
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return_all_tasks | boolean | Determines whether or not a request returns all tasks. When set to `false` task profiles are left out of the response.
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return_all_models | Determines whether or not a profile request returns all models. When set to `false` model profiles are left out of the response.
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### Example: Return all tasks and models and models on a specific node
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```json
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GET /_plugins/_ml/profile
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{
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"node_ids": ["KzONM8c8T4Od-NoUANQNGg"],
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"return_all_tasks": true,
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"return_all_models": true
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}
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```
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### Response: Return all tasks and models on a specific node
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```json
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{
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"nodes" : {
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"qTduw0FJTrmGrqMrxH0dcA" : { # node id
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"models" : {
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"WWQI44MBbzI2oUKAvNUt" : { # model id
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"worker_nodes" : [ # routing table
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"KzONM8c8T4Od-NoUANQNGg"
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]
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}
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}
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},
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...
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"KzONM8c8T4Od-NoUANQNGg" : { # node id
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"models" : {
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"WWQI44MBbzI2oUKAvNUt" : { # model id
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"model_state" : "LOADED", # model status
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"predictor" : "org.opensearch.ml.engine.algorithms.text_embedding.TextEmbeddingModel@592814c9",
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"worker_nodes" : [ # routing table
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"KzONM8c8T4Od-NoUANQNGg"
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],
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"predict_request_stats" : { # predict request stats on this node
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"count" : 2, # total predict requests on this node
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"max" : 89.978681, # max latency in milliseconds
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"min" : 5.402,
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"average" : 47.6903405,
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"p50" : 47.6903405,
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"p90" : 81.5210129,
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"p99" : 89.13291418999998
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}
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}
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}
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},
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...
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}
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```
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## Predict
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## Predict
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ML Commons can predict new data with your trained model either from indexed data or a data frame. To use the Predict API, the `model_id` is required.
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ML Commons can predict new data with your trained model either from indexed data or a data frame. To use the Predict API, the `model_id` is required.
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@ -0,0 +1,258 @@
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---
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layout: default
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title: Model serving framework
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has_children: false
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nav_order: 110
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---
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# Model serving framework
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ML commons supports the ability to serve custom models and use those models to make inferences. For those who want to run their PyTorch deep-learning model inside an OpenSearch cluster, you can upload and run that model with the ML Commons REST API.
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This page outlines the steps required to upload a custom model and run with the ML Commons plugin.
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## Prerequisites
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To upload a custom model to OpenSearch, you need to prepare it outside of your OpenSearch cluster. You can use a current model or train a new model depending on your needs.
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### Model support
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As of OpenSearch 2.4, the model serving framework only supports text embedding models without GPU acceleration.
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### Model format
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To use a model in OpenSearch, you'll need to export the model into a portable format. As of 2.4, OpenSearch only supports [torchscript](https://pytorch.org/docs/stable/jit.html) format.
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### Model size
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Most deep-learning models are over 100 MBs, making it difficult to fit the model into a single document. OpenSearch splits the model file into smaller chunks to store in a model index. When allocating ML or data nodes for your OpenSearch cluster, be aware of the size of your model to prevent any downtime when making inferences.
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## Upload model to OpenSearch
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Use the URL upload operation for models that already exist on another server, such as GitHub or S3.
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```
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POST /_plugins/_ml/models/_upload
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```
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The URL upload method requires the following request fields:
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Field | Data Type | Description
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:--- | :--- | :---
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`name`| string | The name of the model. |
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`version` | string | The version number of the model. Since OpenSearch does not enforce a specific version schema for models, you can choose any number or format that makes sense for your models. |
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`model_format` | string | The portable format of the model file. Currently only supports `TORCH_SCRIPT`. |
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`model_config` | string | The model's configuration, including the `model_type`, `embedding_dimension`, and `framework_type`. |
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`url` | string | The URL where the model is located. |
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#### Sample request
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The following sample request uploads version `1.0.0` of an NLP sentence transformation model named `all-MiniLM-L6-v2`.
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```json
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POST /_plugins/_ml/models/_upload
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{
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"name": "all-MiniLM-L6-v2",
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"version": "1.0.0",
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"description": "test model",
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"model_format": "TORCH_SCRIPT",
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"model_config": {
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"model_type": "bert",
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"embedding_dimension": 384,
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"framework_type": "sentence_transformers"
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},
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"url": "https://github.com/opensearch-project/ml-commons/raw/2.x/ml-algorithms/src/test/resources/org/opensearch/ml/engine/algorithms/text_embedding/all-MiniLM-L6-v2_torchscript_sentence-transformer.zip?raw=true"
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}
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```
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#### Sample response
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OpenSearch responds with the `task_id` and task `status`.
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```json
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{
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"task_id" : "ew8I44MBhyWuIwnfvDIH",
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"status" : "CREATED"
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}
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```
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To see the status of your model upload, pass the `task_id` into the [task API]({{site.url}}{{site.baseurl}}/ml-commons-plugin/api#get-task-information).
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## Load the model
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||||||
|
The load model operation reads the model's chunks from the model index, then creates an instance of the model to load into memory. The bigger the model, the more chunks the model is split into. The more chunks a model index contains, the longer it takes for the model to load into memory.
|
||||||
|
|
||||||
|
### Get the `model_id`
|
||||||
|
|
||||||
|
To load a model, you need the `model_id`. To find the `model_id`, take the `task_id` from the model's upload operations API response and use the `GET _ml/tasks` API.
|
||||||
|
|
||||||
|
This example request uses the `task_id` from the upload example.
|
||||||
|
|
||||||
|
```json
|
||||||
|
GET /_plugins/_ml/tasks/ew8I44MBhyWuIwnfvDIH
|
||||||
|
```
|
||||||
|
|
||||||
|
OpenSearch responds with the `model_id`:
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"model_id" : "WWQI44MBbzI2oUKAvNUt",
|
||||||
|
"task_type" : "UPLOAD_MODEL",
|
||||||
|
"function_name" : "TEXT_EMBEDDING",
|
||||||
|
"state" : "COMPLETED",
|
||||||
|
"worker_node" : "KzONM8c8T4Od-NoUANQNGg",
|
||||||
|
"create_time" : 3455961564003,
|
||||||
|
"last_update_time" : 3216361373241,
|
||||||
|
"is_async" : true
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
### Load model from index
|
||||||
|
|
||||||
|
With the `model_id`, you can now load the model from the model's index to deploy the model with ML nodes. The load API operation reads model chunks from the model index, then create an instance of that model and save the chunks in the ML node's cache.
|
||||||
|
|
||||||
|
Add the `model_id` to the load API operation.
|
||||||
|
|
||||||
|
```json
|
||||||
|
POST /_plugins/_ml/models/<model_id>/_load
|
||||||
|
```
|
||||||
|
|
||||||
|
By default the ML Common's setting `plugins.ml_commons.only_run_on_ml_node` is set to `false`. When `false`, models load on ML nodes first. If no ML nodes exist, models load on data nodes. When running ML models in production, set `plugins.ml_commons.only_run_on_ml_node` to `true`, so that models only load on ML nodes.
|
||||||
|
|
||||||
|
#### Sample Request: Load into any available ML node
|
||||||
|
|
||||||
|
In this example request, OpenSearch loads the model into any available OpenSearch node.
|
||||||
|
|
||||||
|
```json
|
||||||
|
POST /_plugins/_ml/models/WWQI44MBbzI2oUKAvNUt/_load
|
||||||
|
```
|
||||||
|
|
||||||
|
#### Sample Request: Load into a specific node
|
||||||
|
|
||||||
|
If you want to reserve the memory of other ML nodes within your cluster, you can load your model into a specific node(s) by specifying the `node_id` in the request body:
|
||||||
|
|
||||||
|
```json
|
||||||
|
POST /_plugins/_ml/models/WWQI44MBbzI2oUKAvNUt/_load
|
||||||
|
{
|
||||||
|
"node_ids": ["4PLK7KJWReyX0oWKnBA8nA"]
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
#### Sample Response
|
||||||
|
|
||||||
|
All models load asynchronously. Therefore, the load API responds a new `task_id` based on the load, and returns a `status` for the task.
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"task_id" : "hA8P44MBhyWuIwnfvTKP",
|
||||||
|
"status" : "CREATED"
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
### Check model load status
|
||||||
|
|
||||||
|
With your `task_id` from the load response, you can use the `GET _ml/tasks` API to see the loading status of your model. Before a loaded model can be used for inferences, the load task's `state` must show as `COMPLETED`.
|
||||||
|
|
||||||
|
#### Sample Request
|
||||||
|
|
||||||
|
```json
|
||||||
|
GET /_plugins/_ml/tasks/hA8P44MBhyWuIwnfvTKP
|
||||||
|
```
|
||||||
|
|
||||||
|
#### Sample Response
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"model_id" : "WWQI44MBbzI2oUKAvNUt",
|
||||||
|
"task_type" : "LOAD_MODEL",
|
||||||
|
"function_name" : "TEXT_EMBEDDING",
|
||||||
|
"state" : "COMPLETED",
|
||||||
|
"worker_node" : "KzONM8c8T4Od-NoUANQNGg",
|
||||||
|
"create_time" : 1665961803150,
|
||||||
|
"last_update_time" : 1665961815959,
|
||||||
|
"is_async" : true
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
## Use loaded model for inferences
|
||||||
|
|
||||||
|
After the model has been loaded, you can enter the `model_id` into the [predict API]({{site.url}}{{site.baseurl}}/ml-commons-plugin/api#predict) to perform inferences.
|
||||||
|
|
||||||
|
```json
|
||||||
|
POST /_plugins/_ml/models/<model_id>/_predict
|
||||||
|
```
|
||||||
|
|
||||||
|
|
||||||
|
### Sample Request
|
||||||
|
|
||||||
|
```json
|
||||||
|
POST /_plugins/_ml/_predict/text_embedding/WWQI44MBbzI2oUKAvNUt
|
||||||
|
{
|
||||||
|
"text_docs":[ "today is sunny"],
|
||||||
|
"return_number": true,
|
||||||
|
"target_response": ["sentence_embedding"]
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
### Sample Response
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"inference_results" : [
|
||||||
|
{
|
||||||
|
"output" : [
|
||||||
|
{
|
||||||
|
"name" : "sentence_embedding",
|
||||||
|
"data_type" : "FLOAT32",
|
||||||
|
"shape" : [
|
||||||
|
384
|
||||||
|
],
|
||||||
|
"data" : [
|
||||||
|
-0.023315024,
|
||||||
|
0.08975691,
|
||||||
|
0.078479774,
|
||||||
|
...
|
||||||
|
]
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
|
]
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
## Unload the model
|
||||||
|
|
||||||
|
If you're done making predictions with your model, use the unload operation to remove the model from your memory cache. The model will remain accessible in the model index.
|
||||||
|
|
||||||
|
```json
|
||||||
|
POST /_plugins/_ml/models/<model_id>/_unload
|
||||||
|
```
|
||||||
|
|
||||||
|
### Sample request
|
||||||
|
|
||||||
|
```json
|
||||||
|
POST /_plugins/_ml/models/MGqJhYMBbbh0ushjm8p_/_unload
|
||||||
|
```
|
||||||
|
|
||||||
|
### Sample response
|
||||||
|
|
||||||
|
```json
|
||||||
|
{
|
||||||
|
"s5JwjZRqTY6nOT0EvFwVdA": {
|
||||||
|
"stats": {
|
||||||
|
"MGqJhYMBbbh0ushjm8p_": "deleted"
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue