[Web] Failed to load model: Error: no available backend found. ERR: [webgpu] backend not found

[mozeqiu123]

Describe the issue

I'm new to this. I want to run my OCR text recognition model on the web side. But inference is slow, so I want to use webgpu for acceleration.

To reproduce

Load ort in html file：
<script src="https://unpkg.com/onnxruntime-web/dist/ort.min.js"></script>
use and get error:
const det_path = "det.onnx" async function loadDetModle() { try{ if (!navigator.gpu) { throw new Error("WebGPU is not supported in this browser."); } const session_det = await ort.InferenceSession.create(det_path, { executionProviders: ['webgpu'] }); console.log("Model loaded successfully with WebGPU backend."); return session_det }catch (e) { console.error("Failed to load model:", e); } }
If you don’t use executionProviders: ['webgpu'] you can use it normally and reason about it.

Also, if using webgl. Then other errors will occur。What does the following error mean?
transform.js:214 Failed to load model: TypeError: cannot resolve operator 'HardSigmoid' with opsets: ai.onnx v11

Urgency

No response

ONNX Runtime Installation

Other / Unknown

ONNX Runtime Version or Commit ID

1.20.0

Execution Provider

'webgpu' (WebGPU)

[skottmckay]

Not clear what error you're getting when you try and use WebGPU. Is there a specific error message?

WebGL must not have implemented the HardSigmoid operator. It's unlikely that will happen as I believe WebGPU is the preferred option now.

[fs-eire]

you need to use <script src="https://unpkg.com/onnxruntime-web/dist/ort.webgpu.min.js"></script> to enable webgpu.

the next version of ORT will include webgpu in ort.min.js by default.