Convert to NNEF

[igor-yusupov]

I want to convert to NNEF format weights to have faster loading with command: tract encoder.onnx -i src:sequence,1,f32 -i src_mask:sequence,sequence,bool dump --nnef encoder.nnef.tgz

But I got error:

Caused by:
        0: Translating model to proto_model
        1: Translating model to AST
        2: No serializer found for node #0 "src" Source

Can you help me to solve the problem please? I can attach weights if needed

[kali]

You need to add --nnef-tract-core. This will enable tract extensions. Your source node (tract representation of a model input) is non-NNEF as it features symbolic dimensions.

[igor-yusupov]

Thank you, I succeed in converting model. But now I got error: Registry not found Identifier("tract_core")

code of reading model:

let encoder = tract_nnef::nnef()
        .model_for_path("encoder.nnef.tgz")
        .unwrap()
        // .with_output_fact(0, InferenceFact::default())
        // .unwrap()
        .into_optimized()
        .unwrap()
        .into_runnable()
        .unwrap();

[kali]

Same thing, really. Now your model uses tract extension, you need to add .with_tract_core() after the nnef() instantiation to enable them.

[igor-yusupov]

I did it. Thank you very much!