Menoh error loading model from onnx file

[kmorito]

Hi
I'm trying to run Menoh with the ONNX file converted from the Keras/Tensorflow model.
The following error occurs when calling the menoh function "make_model_data_from_onnx".
menoh invalid attribute type error: attribute type TENSOR for "value"

This ONNX file was created using mmdnn.
$ mmdownload -f keras -n vgg16 -o ./
$ mmconvert -sf keras -iw imagenet_vgg16.h5 -df onnx -om imagenet_vgg16.onnx

OS: Windows 10
Keras 2.2.2
Tensorflow 1.8.0
onnx-tf 1.2.1
Menoh 1.2.0

For the following file It works.
wget('https://preferredjp.box.com/shared/static/o2xip23e3f0knwc5ve78oderuglkf2wt.onnx', './data/vgg16.onnx')

What should I check?

Kind

[okdshin]

Hi @kmorito
It seems Constant operator is contained in imagenet_vgg16.onnx.
Menoh 1.2.0 doesn't support Constant operator.
Now PR for Constant is created #222 . It will be merged soon.
Also you can use this feature of ONNX official to delete Constant node.

[kmorito]

Hi @okdshin
Thank you for your reply.

I tried #222 , but the following error occured.
menoh unsupported operator error: Flatten

Menoh doesn't support Flatten node ?
Is it as intended?

Kind

[okdshin]

Sorry for my late reply.
Flatten node is not supported yet. I estimate Flatten is used to connect the last fc layer in keras's VGG16. Chainer's VGG16 uses Reshape instead of Flatten and Menoh merely ignores the Reshape node. I think you can delete flatten node from the model.
Sorry for inconvinience. I will add Flatten node.

[kmorito]

Hi @okdshin

It's working!
This is well parallelized internally. That's good.
Thank you for your help.
I hope to be supported some other effective node. For example PReLU or so... :)

Kind

[okdshin]

Hi @kmorito . Just FYI, now chainer-compiler's menoh API is available. It is compatible to menoh and it supports more ops (including PRelu) and more backends (Intel GPU, CUDA).
https://github.com/pfnet-research/chainer-compiler/tree/master/menoh