Re: Guile fibers return values

[Amirouche Boubekki]

Hello Zelphir!

Le sam. 4 janv. 2020 à 22:49, Zelphir Kaltstahl
<address@hidden> a écrit :
>
> Hello Guile users!
>
> I have questions regarding the usage of the fibers library. It seems,
> that I cannot find any way to get a computation result back from a
> fiber. I also cannot find anything about how to get a value back from a
> fiber, except for channels. The examples include one example using the
> procedure `make-channel`, to create one channel for a client to send to
> a server and one channel to use for the server to send messages to the
> client.
>
> Are channels the only way to get a computation result back from a fiber?
>
> Should I be creating channels, which the spawned fiber then can use on
> its own, to asynchronously give me a result?
>
> This is an aside of my actual project currently. I want to parallelize
> some algorithm and want to make use of fibers for that, but in order to
> do that, I must understand how to run multiple fibers and get their
> results back.
>
> Can you give me an example, where fibers are used to split up a
> computation heavy task so that it is sped up, because of running on
> multiple cores?
>

For that last bit, I have done the following in babelia:

  
https://github.com/amirouche/guile-babelia/blob/87ae25b56777ab6072759bbe80bb80851d0d9174/babelia/pool.scm#L89-L108

I am wondering why the existing parallel for do not work for you:

  https://www.gnu.org/software/guile/manual/html_node/Parallel-Forms.html

> Regards,
>
> Zelphir
>
>


-- 
Amirouche ~ https://hyper.dev