Packaging Olive artifacts¶

What is Olive Packaging¶

Olive will output multiple candidate models based on metrics priorities. It also can package output artifacts when the user requires. Olive packaging can be used in different scenarios. There are 3 packaging types: Zipfile, AzureMLModels and AzureMLData.

Zipfile¶

Zipfile packaging will generate a ZIP file which includes 3 folders: CandidateModels, SampleCode and ONNXRuntimePackages, and a models_rank.json file in the output_dir folder (from Engine Configuration):

CandidateModels: top ranked output model set
- Model file
- Olive Pass run history configurations for candidate model
- Inference settings (onnx model only)
SampleCode: code sample for ONNX model
- C++
- C#
- Python
ONNXRuntimePackages: ONNXRuntime package files with the same version that were used by Olive Engine in this workflow run.
models_rank.json: A JSON file containing a list that ranks all output models based on specific metrics across all accelerators.

CandidateModels¶

CandidateModels includes k folders where k is the number of ranked output models, with name BestCandidateModel_1, BestCandidateModel_2, … and BestCandidateModel_k. The order is ranked by metrics priorities, starting from 1. e.g., if you have 3 metrics metric_1, metric_2 and metric_3 with priority 1, 2 and 3. The output models will be sorted firstly by metric_1. If the value of metric_1 of 2 output models are same, they will be sorted by metric_2, and followed by next lower priority metric.

Each BestCandidateModel folder will include model file/folder. The folder also includes a json file which includes the Olive Pass run history configurations since input model, a json file with performance metrics and a json file for inference settings for the candidate model if the candidate model is an ONNX model.

SampleCode¶

Olive will only provide sample codes for ONNX model. Sample code supports 3 different programming languages: C++, C# and Python. And a code snippet introducing how to use Olive output artifacts to inference candidate model with recommended inference configurations.

Models rank JSON file¶

A file that contains a JSON list for ranked model info across all accelerators, e.g.:

[
    {
        "rank": 1,
        "model_config": {
            "type": "ONNXModel",
            "config": {
                "model_path": "path/model.onnx",
                "inference_settings": {
                    "execution_provider": [
                        "CPUExecutionProvider"
                    ],
                    "provider_options": [
                        {}
                    ],
                    "io_bind": false,
                    "session_options": {
                        "execution_mode": 1,
                        "graph_optimization_level": 99,
                        "inter_op_num_threads": 1,
                        "intra_op_num_threads": 14
                    }
                },
                "use_ort_extensions": false,
                "model_attributes": {<model_attributes>}
            }
        },
        "metrics": {
            "accuracy-accuracy": {
                "value": 0.8602941176470589,
                "priority": 1,
                "higher_is_better": true
            },
            "latency-avg": {
                "value": 36.2313,
                "priority": 2,
                "higher_is_better": false
            },
        }
    },
    {"rank": 2, "model_config": <model_config>, "metrics": <metrics>},
    {"rank": 3, "model_config": <model_config>, "metrics": <metrics>}
]

AzureMLModels¶

AzureMLModels packaging will register the output models to your Azure Machine Learning workspace. The asset name will be set as <packaging_config_name>_<accelerator_spec>_<model_rank>. The order is ranked by metrics priorities, starting from 1. For instance, if the output model is ONNX model and the packaging config is:

{
    "type": "AzureMLModels",
    "name": "olive_output_model",
    "config": {
        "version": "1",
        "description": "description"
    }
}

and for CPU, the best execution provider is CPUExecutionProvider, so the first ranked model name registered on AML will be olive_output_model_cpu-cpu_1.

Olive will also upload model configuration file, inference config file, metrics file and model info file to the Azure ML.

AzureMLData¶

AzureMLData packaging will upload the output models to your Azure Machine Learning workspace as Data assets. The asset name will be set as <packaging_config_name>_<accelerator_spec>_<model_rank>. The order is ranked by metrics priorities, starting from 1. For instance, if the output model is ONNX model and the packaging config is:

{
    "type": "AzureMLData",
    "name": "olive_output_model",
    "config": {
        "version": "1",
        "description": "description"
    }
}

and for CPU, the best execution provider is CPUExecutionProvider, so the first ranked model Data name on AML will be olive_output_model_cpu-cpu_1.

Olive will also upload model configuration file, inference config file, metrics file and model info file to the Azure ML.

How to package Olive artifacts¶

Olive packaging configuration is configured in PackagingConfig in Engine configuration. PackagingConfig can be a single packging configuration. Alternatively, if you want to apply multiple packaging types, you can also define a list of packaging configurations.

If not specified, Olive will not package artifacts.

PackagingConfig
- type [PackagingType]: Olive packaging type. Olive will package different artifacts based on type.
- name [str]: For PackagingType.Zipfile type, Olive will generate a ZIP file with name prefix: <name>.zip. For PackagingType.AzureMLModels and PackagingType.AzureMLData, Olive will use this name for Azure ML resource. The default value is OutputModels.
- config [dict]: The packaging config.
  - Zipfile
    - export_in_mlflow_format [bool]: Export model in mlflow format. This is false by default.
  - AzureMLModels
    - export_in_mlflow_format [bool]: Export model in mlflow format. This is false by default.
    - version [int | str]： The version for this model registration. This is 1 by default.
    - description [str] The description for this model registration. This is None by default.
  - AzureMLData
    - export_in_mlflow_format [bool]: Export model in mlflow format. This is false by default.
    - version [int | str]： The version for this data asset. This is 1 by default.
    - description [str] The description for this data asset. This is None by default.

You can add PackagingConfig to Engine configurations. e.g.:

"engine": {
    "search_strategy": {
        "execution_order": "joint",
        "search_algorithm": "tpe",
        "search_algorithm_config": {
            "num_samples": 5,
            "seed": 0
        }
    },
    "evaluator": "common_evaluator",
    "host": "local_system",
    "target": "local_system",
    "packaging_config": [
        {
            "type": "Zipfile",
            "name": "OutputModels"
        },
        {
            "type": "AzureMLModels",
            "name": "OutputModels"
        },
        {
            "type": "AzureMLData",
            "name": "OutputModels"
        }
    ]
    "clean_cache": true,
    "cache_dir": "cache"
}

Packaged files¶

Inference config file¶

The inference config file is a json file including execution_provider and session_options. e.g.:

{
    "execution_provider": [
        [
            "CPUExecutionProvider",
            {}
        ]
    ],
    "session_options": {
        "execution_mode": 1,
        "graph_optimization_level": 99,
        "extra_session_config": null,
        "inter_op_num_threads": 1,
        "intra_op_num_threads": 64
    }
}

Model configuration file¶

The model configuration file is a json file including the history of applied Passes history to the output model. e.g.:

{
  "53fc6781998a4624b61959bb064622ce": null,
  "0_OnnxConversion-53fc6781998a4624b61959bb064622ce-7a320d6d630bced3548f242238392730": {
    ...
  },
  "1_OrtTransformersOptimization-0-c499e39e42693aaab050820afd31e0c3-cpu-cpu": {
    ...
  },
  "2_OnnxQuantization-1-1431c563dcfda9c9c3bf26c5d61ef58e": {
    ...
  },
  "3_OrtPerfTuning-2-a843d77ae4964c04e145b83567fb5b05-cpu-cpu": {
    ...
  }
}

Metrics file¶

The metrics file is a json file including input model metrics and output model metrics.