WebDNN doesn't use WebGPU on Vega GPU on Safari 11.1 and Safari 11.2 beta (tech preview 48) although supported

[oscarbg]

Hi, have MacOS 10.13.4 public beta 1 and a RX Vega GPU and testing examples 1 (Neural Style Transfer) and 2 (ResNet50 Image Classification) from https://mil-tokyo.github.io/webdnn/ don't use WebGPU although I have WebGPU enabled manually.. It's selecting webassembly backend for both samples both on included Safari 11.1 from 10.13.4 beta and using latest Safari tech preview 48 (says version 11.2).. https://mil-tokyo.github.io/webdnn/ site detects WebGPU is supported I get :

This Browser:

WebGPU	WebGL	WebAssembly/asm.js	Fallback
Supported	Not supported	Supported	Supported

As I see site says: "WebGPU API is available (some hardware cannot be supported yet)" can state clearly what hardware (GPUs) are you supporting WebGPU under MacOS? is site checking a WebGPU GPU support list which Vega isn't included and because of that fails? thanks..

[Kiikurage]

In some AMD GPUs, fatal errors are reported(#286).

We have added a runtime check system which correctly detected almost of all unsupported AMD GPUs so far. However, since we haven't known the reason why WebDNN with AMD GPU failed and so this runtime check is not perfect. Maybe your RX Vega GPU through this check.