From: garylscott@sbcglobal.net   
      
   On 3/5/2026 2:56 PM, Steven G. Kargl wrote:   
   > All,   
   >   
   > The gfortran developers have added a shared-memory   
   > implementation for coarray Fortran.  The forthcoming   
   > GCC 16.1 will be the first release with this support.   
   > This implementation sits on top an operating system's   
   > pthread library (at least on Linux and BSD).   
   >   
   > To use it, one compile with   
   >   
   > % gfortran -fcoarray=lib -lcaf_shmem file.f90   
   >   
   Speaking of coarrays, I never did get a clear explanation of how to have   
   a single instance of a GUI but with a coarray subsection (4 cores on   
   Windows with the particular IVF and hardware I had) in the same process.   
     Within the same application i always got 4 copies of the GUI.  I could   
   find no way to designate only certain threads were to be duplicated on   
   the 4 cores, rather than the entire executable/program.  I ended up   
   trying a coarray calculation engine and a separate GUI process that   
   communicated with it via shared memory.  Is it possible within a single   
   coarray application to have such fine control over what is delegated to   
   each core?   
      
   It worked with the separate GUI control, but for my application it only   
   got about 10% performance improvement and was too difficult to support   
   long term.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)