Can a golang program be compiled to run with only ONE goroutine ?

[Karolina GORNA]

Hello,

Maybe the question has already been asked, but I would be glad to have your feedback.

Can a golang program be compiled to run with only one goroutine, or at least one "OS thread" ?

I am aware of using GOMAXPROCS(1) to have only one "OS thread" or to use taskset -c 1 go build . to force having one "OS thread". These commands don't really work in practice, since with trace execution tools, I can see that many threads are used during the execution at the end.

Thank you for your help,
Karolina

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[Brian Candler]

What's your use case? Would TinyGo be sufficient for your needs?

https://tinygo.org/docs/guides/tips-n-tricks/

"TinyGo code runs on a single core, in a single thread (think GOMAXPROCS=1)"

[Ian Lance Taylor]

On Tue, Sep 10, 2024 at 6:54 AM 'Karolina GORNA' via golang-nuts
<golan...@googlegroups.com> wrote:
>
> Maybe the question has already been asked, but I would be glad to have your feedback.
>
> Can a golang program be compiled to run with only one goroutine, or at least one "OS thread" ?
>
> I am aware of using GOMAXPROCS(1) to have only one "OS thread" or to use taskset -c 1 go build . to force having one "OS thread". These commands don't really work in practice, since with trace execution tools, I can see that many threads are used during the execution at the end.

For the standard Go implementation, no, this is not possible. Go is
inherently multi-threaded.

Ian

[Zxilly Chou]

If you compile it to WebAssembly, it will works under the single thread model. However, there are still multi  goroutine be created, it was designed to.

[Karolina GORNA]

Thank you very much, TinyGo was what I was looking for.