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The lang is still under development, the most current in in Fortran 2023: https://global.oup.com/academic/product/modern-fortran-explained-9780198876588?cc=us&l

by anta40 2y ago

The lang is still under development, the most current in in Fortran 2023: https://global.oup.com/academic/product/modern-fortran-explained-9780198876588?cc=us&lang=en& https://global.oup.com/academic/product/modern-fortran-expla...

pjmlp 2y ago
I am fully aware of it, however most recent revisions tend not to be adopted by all compilers, and honestly the large majority only cares about keeping existing code running. A bit like C23 and C++23 are here, and the large majority is a mix of C89, C99, C++11, and C++17, as what folks in the trenches care about. Or Java 8 versus Java 24, and so on. Fortran is in a similar position.
- rbanffy 2y ago
  How many different platforms out there run Fortran code these days? I’m aware of it being very important in scientific computing (and compiling existing code is critical) but I don’t know many other use cases and different platforms requiring different compilers.
  - pjmlp 2y ago
    In many HPC cases you are using the platform tools, not gfortran. Also we have one use case that is responsible for OpenCL losing mindshare for scientific community, running Fortran on GPU. Thus I bet at least Intel, NVidia, AMD, Cray, IBM, being relevant ones. Yes, some of them are planning to eventually adopt LFortran to replace their own, like they did with clang, or at least are using LLVM nowadays.
    - pklausler 2y ago
      I think that you're conflating LFortran with LLVM Flang.
  - ok123456 2y ago
    Everyone using numpy.
    - rbanffy 2y ago
      What compilers are used to build it might be relevant.
      - ok123456 2y ago
        Typically gfortran and intel fortran.
        ggraphilia 2y ago
        It may not be that simple on Windows : https://labs.quansight.org/blog/building-scipy-with-flang https://labs.quansight.org/blog/building-scipy-with-flang
  - jamesfinlayson 2y ago
    At a previous job there were two fairly old Fortran code bases running on emulated hardware. I think one was using an old proprietary compiler (I want to say from IBM) while the other was almost certainly using some ancient compiler given the emulated hardware that it was running on.

by anta40 2y ago

pjmlp 2y ago

I am fully aware of it, however most recent revisions tend not to be adopted by all compilers, and honestly the large majority only cares about keeping existing code running. A bit like C23 and C++23 are here, and the large majority is a mix of C89, C99, C++11, and C++17, as what folks in the trenches care about. Or Java 8 versus Java 24, and so on. Fortran is in a similar position.

rbanffy 2y ago
How many different platforms out there run Fortran code these days? I’m aware of it being very important in scientific computing (and compiling existing code is critical) but I don’t know many other use cases and different platforms requiring different compilers.
- pjmlp 2y ago
  In many HPC cases you are using the platform tools, not gfortran. Also we have one use case that is responsible for OpenCL losing mindshare for scientific community, running Fortran on GPU. Thus I bet at least Intel, NVidia, AMD, Cray, IBM, being relevant ones. Yes, some of them are planning to eventually adopt LFortran to replace their own, like they did with clang, or at least are using LLVM nowadays.
  - pklausler 2y ago
    I think that you're conflating LFortran with LLVM Flang.
- ok123456 2y ago
  Everyone using numpy.
  - rbanffy 2y ago
    What compilers are used to build it might be relevant.
    - ok123456 2y ago
      Typically gfortran and intel fortran.
      - ggraphilia 2y ago
        It may not be that simple on Windows : https://labs.quansight.org/blog/building-scipy-with-flang https://labs.quansight.org/blog/building-scipy-with-flang
- jamesfinlayson 2y ago
  At a previous job there were two fairly old Fortran code bases running on emulated hardware. I think one was using an old proprietary compiler (I want to say from IBM) while the other was almost certainly using some ancient compiler given the emulated hardware that it was running on.