6 ms·

Yes... and he's trying to say a lot of software out there aren't written multi-threaded because either there wasn't much performance gain or the developers simp

by yeukhon 10y ago

Yes... and he's trying to say a lot of software out there aren't written multi-threaded because either there wasn't much performance gain or the developers simply choose not to.

user5994461 10y ago
Compilation and linting are mostly mono threaded. At least in the languages I use. That is a lot of direct waiting.
- shakna 10y ago
  > Compilation and linting are mostly mono threaded. Which languages fall on your list? (Just curious) I use: * C (make and gcc can thread) * Python (no real thread story) * JS (depends) * Scheme (usually threads)
  - user5994461 10y ago
    C, C++. Compilation can be multi threaded. Linking is inherently mono threaded. A number of optimizations flags are mono threaded (and take very long). Python. Lint is mono threaded. The virtualenv setup is mono threaded (running requirements.txt). Java. Mono threaded for package generation (jar files). Not sure about compilation and running tests. Most of Eclipse is mono threaded (last I used it) like indexing and rendering and auto completion. Outside of that, opening any IDE, tool, application or browser is a mostly single threaded operation. The rendering of most GUI is also single threaded.
    - neilc 10y ago
      > Linking is inherently mono threaded. This is actually not the case -- modern linkers (e.g., lld) can take advantage of multiple cores. https://lld.llvm.org/ https://lld.llvm.org/
      - gpderetta 10y ago
        so can the 'gold' linker.
        neilc 10y ago
        Interesting -- do you have a link on this?
  - jschwartzi 10y ago
    Make definitely requires a well-specified list of dependencies, meaning that the targets and prerequisites need to specify a DAG from the source files through the intermediates to the final target executable(s). If that's not complete then a threaded make will fail. Most recursive make systems can't be run in jobserver mode because the graph is not well-specified.

by yeukhon 10y ago

Yes... and he's trying to say a lot of software out there aren't written multi-threaded because either there wasn't much performance gain or the developers simply choose not to.

user5994461 10y ago

Compilation and linting are mostly mono threaded. At least in the languages I use. That is a lot of direct waiting.

shakna 10y ago
> Compilation and linting are mostly mono threaded. Which languages fall on your list? (Just curious) I use: * C (make and gcc can thread) * Python (no real thread story) * JS (depends) * Scheme (usually threads)
- user5994461 10y ago
  C, C++. Compilation can be multi threaded. Linking is inherently mono threaded. A number of optimizations flags are mono threaded (and take very long). Python. Lint is mono threaded. The virtualenv setup is mono threaded (running requirements.txt). Java. Mono threaded for package generation (jar files). Not sure about compilation and running tests. Most of Eclipse is mono threaded (last I used it) like indexing and rendering and auto completion. Outside of that, opening any IDE, tool, application or browser is a mostly single threaded operation. The rendering of most GUI is also single threaded.
  - neilc 10y ago
    > Linking is inherently mono threaded. This is actually not the case -- modern linkers (e.g., lld) can take advantage of multiple cores. https://lld.llvm.org/ https://lld.llvm.org/
    - gpderetta 10y ago
      so can the 'gold' linker.
      - neilc 10y ago
        Interesting -- do you have a link on this?
- jschwartzi 10y ago
  Make definitely requires a well-specified list of dependencies, meaning that the targets and prerequisites need to specify a DAG from the source files through the intermediates to the final target executable(s). If that's not complete then a threaded make will fail. Most recursive make systems can't be run in jobserver mode because the graph is not well-specified.