Whisper.net demo fast - my app slow transcribe - same wav file

[whann0205]

Now that my app is working with whisper.net i did some tests.
I am transcribing the same file with the source cloned from this site.
Its blazing fast transcribed in whisper.net.demo (~1 sec)
Both are using "ggml-base.bin".
In my app .net maui based on net8 it takes around 8 sec.
Any idea where to start?
Update on this - i upgraded to net9.
Same behavior, same audio file problem.
I am really stuck now have to stop the project :-(

[sandrohanea]

I suppose the .net maui app runs on ios.

The performance will definitely be different on a mac (with metal and/or coreml) vs iOS.

The only suggestion that comes to my mind is to try to tweak the native build, also check https://github.com/ggml-org/whisper.cpp/discussions?discussions_q=is%3Aopen+iphone if someone posted anything about it.

If you run the maui app on the same machine, I would ask which runtime are you using for the maui app?

[whann0205]

I have not tested the performance ON the mac itself.
It runs with visual studio 2022 17.13.6 on MS Windows 11.
What is strange that if i clone your whisper.net demo it
runs fast, same machine same runtime...
But inside the application as a nuget include
(latest version 1.8.1) it takes a long time to get transcribed.