Introduzione a Windows ML

• .NET 6 o versione successiva
• Riferirsi a un TFM specifico per Windows 10 come net6.0-windows10.0.19041.0 o versione successiva

C++20 o versione successiva.

Versioni da Python 3.10 a 3.13, nei dispositivi x64 e ARM64.

Vedi Usare Windows App SDK in un progetto esistente per aggiungere Windows App SDK al progetto o se stai già usando Windows App SDK, aggiorna i pacchetti.

Vedi Usare Windows App SDK in un progetto esistente per aggiungere Windows App SDK al progetto o se stai già usando Windows App SDK, aggiorna i pacchetti.

Il binding Python sfrutta il progetto pywinrt per la proiezione della Windows App SDK. Assicurarsi che l'installazione di Python non provena da Microsoft Store (è possibile installare una versione non in pacchetto da python.org o tramite winget). L'esempio dipende dall'uso dell'API di dipendenza dinamica di Windows App SDK, valida solo per le app non in pacchetto.

Installare i pacchetti Python con questi comandi:

pip install wasdk-Microsoft.Windows.AI.MachineLearning[all] wasdk-Microsoft.Windows.ApplicationModel.DynamicDependency.Bootstrap onnxruntime-windowsml

Assicurarsi che la wasdk- versione dei pacchetti corrisponda alla versione di WindowsAppRuntime.

using Microsoft.ML.OnnxRuntime;
using Microsoft.Windows.AI.MachineLearning;

// First we create a new instance of EnvironmentCreationOptions
EnvironmentCreationOptions envOptions = new()
{
    logId = "WinMLDemo", // Use an ID of your own choice
    logLevel = OrtLoggingLevel.ORT_LOGGING_LEVEL_ERROR
};

// And then use that to create the ORT environment
using var ortEnv = OrtEnv.CreateInstanceWithOptions(ref envOptions);

// Get the default ExecutionProviderCatalog
var catalog = ExecutionProviderCatalog.GetDefault();

// Ensure and register all compatible execution providers with ONNX Runtime
// This downloads any necessary components and registers them
await catalog.EnsureAndRegisterCertifiedAsync();

#include <winrt/Microsoft.Windows.AI.MachineLearning.h>
#include <winml/onnxruntime_cxx_api.h>

// First we need to create an ORT environment
Ort::Env env(ORT_LOGGING_LEVEL_ERROR, "WinMLDemo"); // Use an ID of your own choice

// Get the default ExecutionProviderCatalog
winrt::Microsoft::Windows::AI::MachineLearning::ExecutionProviderCatalog catalog =
    winrt::Microsoft::Windows::AI::MachineLearning::ExecutionProviderCatalog::GetDefault();

// Ensure and register all compatible execution providers with ONNX Runtime
catalog.EnsureAndRegisterCertifiedAsync().get();

import sys
from pathlib import Path
import traceback

_winml_instance = None

class WinML:
    def __new__(cls, *args, **kwargs):
        global _winml_instance
        if _winml_instance is None:
            _winml_instance = super(WinML, cls).__new__(cls, *args, **kwargs)
            _winml_instance._initialized = False
        return _winml_instance

    def __init__(self):
        if self._initialized:
            return
        self._initialized = True

        self._fix_winrt_runtime()
        from winui3.microsoft.windows.applicationmodel.dynamicdependency.bootstrap import (
            InitializeOptions,
            initialize
        )
        import winui3.microsoft.windows.ai.machinelearning as winml
        self._win_app_sdk_handle = initialize(options=InitializeOptions.ON_NO_MATCH_SHOW_UI)
        self._win_app_sdk_handle.__enter__()
        catalog = winml.ExecutionProviderCatalog.get_default()
        self._providers = catalog.find_all_providers()
        self._ep_paths : dict[str, str] = {}
        for provider in self._providers:
            provider.ensure_ready_async().get()
            if provider.library_path == '':
                continue
            self._ep_paths[provider.name] = provider.library_path
        self._registered_eps : list[str] = []

    def __del__(self):
        self._providers = None
        self._win_app_sdk_handle.__exit__(None, None, None)

    def _fix_winrt_runtime(self):
        """
        This function removes the msvcp140.dll from the winrt-runtime package.
        So it does not cause issues with other libraries.
        """
        from importlib import metadata
        site_packages_path = Path(str(metadata.distribution('winrt-runtime').locate_file('')))
        dll_path = site_packages_path / 'winrt' / 'msvcp140.dll'
        if dll_path.exists():
            dll_path.unlink()

    def register_execution_providers_to_ort(self) -> list[str]:
        import onnxruntime as ort
        for name, path in self._ep_paths.items():
            if name not in self._registered_eps:
                try:
                    ort.register_execution_provider_library(name, path)
                    self._registered_eps.append(name)
                except Exception as e:
                    print(f"Failed to register execution provider {name}: {e}", file=sys.stderr)
                    traceback.print_exc()
        return self._registered_eps

WinML().register_execution_providers_to_ort()