Re:Leaky Abstractions
by ithkuil on Thursday June 03, 2021 @06:15AM
(#27379172)
> just put more hardware to it or modularize your application
This is not that easy as it seems.
Rust compilation is not embarrassingly parallel as a lot of what's going on seems to be deferred at the link stage.
Modules inside a crate can't be compiled in parallel because of some reason I don't truly understand, please educate me.
Crates can be truly compiled in parallel, crating projects with hundreds of crates is quite a pain for other reasons.
The result is that a change single line of code in the project I'm working in can take more than 2 minutes on my last gen MacBook pro.
I have a M1 Mac mini where the compilation is twice as fast but I don't have enough RAM there and I'll have a hard time to convince my manager to make an exemption to my companies laptop refresher policies "because of rust".
If I have to take a coffee break every time I need to wait for an incremental compilation my heart would explode.
My current solution is:
1. Multitask. Do somethings else while I'm waiting.
2. Split the code that I'm iterating on in a new project. With minimal dependencies and copy the code back in the main project when I'm done (or just import it as a crate if it makes sense)
Both options suck and I wish they weren't necessary. Please let me know what else could I do. What hardware should I buy etc
(I already use zld on Mac and use minimal debug symbols, iirc debug=1)
This is not that easy as it seems.
Rust compilation is not embarrassingly parallel as a lot of what's going on seems to be deferred at the link stage.
Modules inside a crate can't be compiled in parallel because of some reason I don't truly understand, please educate me.
Crates can be truly compiled in parallel, crating projects with hundreds of crates is quite a pain for other reasons.
The result is that a change single line of code in the project I'm working in can take more than 2 minutes on my last gen MacBook pro.
I have a M1 Mac mini where the compilation is twice as fast but I don't have enough RAM there and I'll have a hard time to convince my manager to make an exemption to my companies laptop refresher policies "because of rust".
If I have to take a coffee break every time I need to wait for an incremental compilation my heart would explode.
My current solution is:
1. Multitask. Do somethings else while I'm waiting.
2. Split the code that I'm iterating on in a new project. With minimal dependencies and copy the code back in the main project when I'm done (or just import it as a crate if it makes sense)
Both options suck and I wish they weren't necessary. Please let me know what else could I do. What hardware should I buy etc
(I already use zld on Mac and use minimal debug symbols, iirc debug=1)