Wasm import functions #4866

mikevoronov · 2023-03-20T21:35:45Z

mikevoronov
Mar 20, 2023

Sorry for possibly trivial Q, but I can't find any example or guide.

Is it possible to use WASI from Python code and provide some Wasm custom imports during VM initialization/running? Namely, can I call some GPU stuff from Python with f.e. wasi-nn or my own custom imports?

mikevoronov · 2023-04-08T22:26:31Z

mikevoronov
Apr 8, 2023
Author

Friendly reminder.

0 replies

mikevoronov · 2023-04-09T15:21:57Z

mikevoronov
Apr 9, 2023
Author

So, it looks like a simple Q that developers should know the answer in advance. Or did I use an incorrect approach to reach you? If so, what is the best way?

0 replies

komodo472 · 2023-04-10T02:59:27Z

komodo472
Apr 10, 2023

Yes its possible. You can define a #[pyfunction] like in this example
https://github.com/RustPython/RustPython/blob/main/examples/call_between_rust_and_python.rs
where you call your own wasm custom imports. The src directory contains another example of how this this can be achieved. To build for wasi you just need to follow the instructions in the README

RustPython/src/lib.rs

Lines 27 to 32 in f39f103

    
           //!     #[pyfunction] 
        
           //!     fn other_thing(s: PyStrRef) -> (String, usize) { 
        
           //!         let new_string = format!("hello from rust, {}!", s); 
        
           //!         let prev_len = s.as_str().len(); 
        
           //!         (new_string, prev_len) 
        
           //!     }

1 reply

fanninpm Apr 17, 2023
Collaborator

@mikevoronov Did this answer your question?

youknowone · 2023-04-10T06:13:52Z

youknowone
Apr 10, 2023
Maintainer

I don't know about wasi-nn, but if you can call it from rust side, you also can call it from RustPython as @komodo472 explained.
Thanks @komodo472 !

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Wasm import functions #4866

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mikevoronov Mar 20, 2023

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mikevoronov Apr 8, 2023 Author

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komodo472 Apr 10, 2023

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youknowone Apr 10, 2023 Maintainer

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Replies: 4 comments 1 reply

mikevoronov
Apr 8, 2023
Author

mikevoronov
Apr 9, 2023
Author

komodo472
Apr 10, 2023

fanninpm Apr 17, 2023
Collaborator

youknowone
Apr 10, 2023
Maintainer