How to use the XNNPackDelegate

[CaptainDario]

I am having trouble getting the XNNPackDelegate working.

I build the binary according to the docs.

and try to use the interpreter like:

    Interpreter interpreter;
    final options = InterpreterOptions()..addDelegate(
      XNNPackDelegate(
        options: XNNPackDelegateOptions(
          numThreads: 4 
        )
      )
    );
    interpreter = await Interpreter.fromAsset(
      _interpreterAssetPath,
      options: options
    );

However I always encounter the errror:

ArgumentError (Invalid argument(s): Failed to lookup symbol 'TfLiteXNNPackDelegateCreate': error code 2138089832)

Does anybody know how to solve this?

[am15h]

Did you check if the TfLiteXNNPackDelegateCreate symbols is being exported correctly?

You may refer to these answers to check that:

• https://stackoverflow.com/questions/1237575/how-do-i-find-out-what-all-symbols-are-exported-from-a-shared-object
• https://stackoverflow.com/questions/34732/how-do-i-list-the-symbols-in-a-so-file

[CaptainDario]

I copied the binaries from the example. Are the binaries from there supposed to work?

Maybe you could also add the binaries for desktop platforms to the release section?

[am15h]

I don't remember if these binaries were built with delegate support, you may refer to stackoverflow links to check exported symbols.