Implementation:Microsoft Onnxruntime OrtProvider

Knowledge Sources	Description
Source File	java/src/main/java/ai/onnxruntime/OrtProvider.java
Repository	Microsoft/onnxruntime

Domains

• Machine Learning Runtime
• Execution Provider Registry

Overview

OrtProvider is a public enum representing the execution providers available through the ONNX Runtime Java API. Each constant maps to the provider's native string name. The enum is used by OrtEnvironment.getAvailableProviders() to report which providers are available in the current build.

Description

The enum defines 18 execution providers:

• CPU ("CPUExecutionProvider")
• CUDA ("CUDAExecutionProvider") - Nvidia GPUs
• DNNL ("DnnlExecutionProvider") - Intel Deep Neural Network Library
• OPEN_VINO ("OpenVINOExecutionProvider")
• VITIS_AI ("VitisAIExecutionProvider") - AMD/Xilinx
• TENSOR_RT ("TensorrtExecutionProvider") - Nvidia TensorRT
• NNAPI ("NnapiExecutionProvider") - Android
• RK_NPU ("RknpuExecutionProvider") - RockChip NPU
• DIRECT_ML ("DmlExecutionProvider") - Windows DirectML
• MI_GRAPH_X ("MIGraphXExecutionProvider") - AMD MIGraphX
• ACL ("ACLExecutionProvider") - ARM Compute Library
• ARM_NN ("ArmNNExecutionProvider")
• ROCM ("ROCMExecutionProvider") - AMD ROCm
• CORE_ML ("CoreMLExecutionProvider") - Apple CoreML
• XNNPACK ("XnnpackExecutionProvider")
• AZURE ("AzureExecutionProvider") - Azure remote endpoint
• QNN ("QNNExecutionProvider")
• WEBGPU ("WebGpuExecutionProvider")

Methods: getName() returns the native name string; mapFromName(String) converts from the native name (throws IllegalArgumentException for unknown names).

Code Reference

Source Location

// File: java/src/main/java/ai/onnxruntime/OrtProvider.java
// Package: ai.onnxruntime

Signature

public enum OrtProvider {
    CPU, CUDA, DNNL, OPEN_VINO, VITIS_AI, TENSOR_RT, NNAPI, RK_NPU,
    DIRECT_ML, MI_GRAPH_X, ACL, ARM_NN, ROCM, CORE_ML, XNNPACK,
    AZURE, QNN, WEBGPU;

    public String getName();
    public static OrtProvider mapFromName(String name);
}

Import

import ai.onnxruntime.OrtProvider;

I/O Contract

Inputs

Name	Type	Description
name	String	Native provider name string (e.g., "CUDAExecutionProvider")

Outputs

Name	Type	Description
OrtProvider	OrtProvider	The corresponding enum constant
getName()	String	The native provider name string

Usage Examples

import ai.onnxruntime.*;
import java.util.EnumSet;

EnumSet<OrtProvider> providers = OrtEnvironment.getAvailableProviders();
System.out.println("Available providers: " + providers);

if (providers.contains(OrtProvider.CUDA)) {
    System.out.println("CUDA is available: " + OrtProvider.CUDA.getName());
}

// Map from native name
OrtProvider p = OrtProvider.mapFromName("CUDAExecutionProvider");
System.out.println("Mapped: " + p); // CUDA

Related Pages

• OrtEnvironment.java - getAvailableProviders() returns EnumSet<OrtProvider>
• OrtSession.java - SessionOptions.addCUDA/addTensorrt/etc. use these providers
• OnnxRuntime.java - Discovers available providers during initialization