Error: 'prod' not yet implemented or not found in the registry. Did you forget to import the kernel?

[HaiDang9719]

To get help from the community, we encourage using Stack Overflow and the tensorflow.js tag.

TensorFlow.js version

2.3.0, TF version: 2.3.0

Browser version

Chrome Version 84.0.4147.135 (Official Build) (64-bit), Firefox 79.0 (64-bit)

Describe the problem or feature request

I have tried with WebGL and CPU, it works fine. However, when I use wasm, it shows the error "'prod' not yet implemented or not found in the registry. Did you forget to import the kernel?"
In the worker.js file, I tried to add the library as follow:

https://cdn.jsdelivr.net/npm/@tensorflow/tfjs/dist/tf.min.js'); importScripts('https://cdn.jsdelivr.net/npm/@tensorflow/tfjs-backend-wasm/dist/tf-backend-wasm.js') tf.setBackend('wasm').then(() => {})

I also tried without web worker and defined as follow but it also did not works:

<script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs/dist/tf.min.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs-backend-wasm/dist/tf-backend-wasm.js"></script>
    <script>
     tf.setBackend('wasm').then(() => );
    </script>

When I tried to visualize the model with Netron, I figured out there is a 'prod' node in the model:
Image

The 'prod' node is defined in Netron as "Computes the product of elements across dimensions of a tensor. Reduces input along the dimensions given in reduction_indices. Unless keep_dims is true, the rank of the tensor is reduced by 1 for each entry in reduction_indices. If keep_dims is true, the reduced dimensions are retained with length 1."

And this structure belongs to the function tf.reduce_sum() and tf.reduce_max() that I used in the Tensorflow model. I converted the Tensorflow as Saved_model format (*.pb) and then converted it to TFJS.

Any help is appreciated, thank you.

Code to reproduce the bug / link to feature request

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GitHub issues for this repository are tracked in the tfjs union repository.

Please file your issue there, following the guidance in that issue template.

[rthadur]

@HaiDang9719 can you please check a similar issue here ?

[HaiDang9719]

@rthadur I did not use web pack or any backend in my project. I used client-side execution for the project (pure JS and HTML), so it does not have package.json or something similar in your mentioned issue.

[y-ich]

I have a same issue. Any workarounds?

[tafsiri]

Hi, in this case prod has not yet been implemented in the WASM backend. You would need to use either CPU or WebGL backends. I'll take this as a feature request to add prod.

[y-ich]

@tafsiri san,

Thank you for your comments!
I am looking forward to implementation of prod on wasm.

[rthadur]

related PR has been merged and will be available in next release. Thank you

[y-ich]

When will version 2.8.0 be released?
I am tired of waiting for prod support;-)