4 ms·

Cargo compiles dependencies in parallel so if you have lots of cores you'll hear your fans spin up. I see a lot of difference between my i5 laptop and i9 deskt

by Scuds 7y ago

Cargo compiles dependencies in parallel so if you have lots of cores you'll hear your fans spin up. I see a lot of difference between my i5 laptop and i9 desktop.

Macha 7y ago
As a case in point, I have a project that uses amethyst and nalgebra (and their 200 transitive dependencies). On upgrading from an OC i5-4670k to a r9-3900x, my compile times for a clean release build went from 20 minutes to 2.
- lasagnaphil 7y ago
  But two minutes is still a lot of time to wait for a build, especially if you’re doing gamedev and want to prototype something fast. It seems nalgebra is the culprit here: because Rust doesn’t yet support const generics, it has to use some hacky type-level metaprogramming to represent numbers, and that will definitely destroy build times.
  - dpc_pw 7y ago
    2 minutes for a full build from scratch. Incremental builds afterwards take seconds, though unfortunately linking of big projects can still sometimes takes up to around a minute.
    - pjmlp 7y ago
      My toy project that I ported from a Gtkmm article done in the days of "The C/C++ Users Journal" takes around 25 minutes to build from scratch on a Asus 1215B netbook (dual core, 8GB, HDD). The original code, after being migrated to an up to date version of Gtkmm, takes a couple of seconds with GCC 7, not more than one minute if at all. The big difference? I don't need to compile from scratch all the 3rd party dependencies. With every release from Rust I do a clean build to assert how much it has improved. It was much worse, so congrats on the work achieved thus far, but it is still a pain to set up a project from scratch.
- home_project123 7y ago
  I added a comment about a cloud builder. Would appreciate comments. https://news.ycombinator.com/item?id=20767201 https://news.ycombinator.com/item?id=20767201
deleted 7y ago
[deleted]

4 ms·

Cargo compiles dependencies in parallel so if you have lots of cores you'll hear your fans spin up. I see a lot of difference between my i5 laptop and i9 deskt

by Scuds 7y ago

Cargo compiles dependencies in parallel so if you have lots of cores you'll hear your fans spin up. I see a lot of difference between my i5 laptop and i9 desktop.

Macha 7y ago
As a case in point, I have a project that uses amethyst and nalgebra (and their 200 transitive dependencies). On upgrading from an OC i5-4670k to a r9-3900x, my compile times for a clean release build went from 20 minutes to 2.
- lasagnaphil 7y ago
  But two minutes is still a lot of time to wait for a build, especially if you’re doing gamedev and want to prototype something fast. It seems nalgebra is the culprit here: because Rust doesn’t yet support const generics, it has to use some hacky type-level metaprogramming to represent numbers, and that will definitely destroy build times.
  - dpc_pw 7y ago
    2 minutes for a full build from scratch. Incremental builds afterwards take seconds, though unfortunately linking of big projects can still sometimes takes up to around a minute.
    - pjmlp 7y ago
      My toy project that I ported from a Gtkmm article done in the days of "The C/C++ Users Journal" takes around 25 minutes to build from scratch on a Asus 1215B netbook (dual core, 8GB, HDD). The original code, after being migrated to an up to date version of Gtkmm, takes a couple of seconds with GCC 7, not more than one minute if at all. The big difference? I don't need to compile from scratch all the 3rd party dependencies. With every release from Rust I do a clean build to assert how much it has improved. It was much worse, so congrats on the work achieved thus far, but it is still a pain to set up a project from scratch.
- home_project123 7y ago
  I added a comment about a cloud builder. Would appreciate comments. https://news.ycombinator.com/item?id=20767201 https://news.ycombinator.com/item?id=20767201
deleted 7y ago
[deleted]