(j3.2006) MPI usage problems in Fortran

Dan Nagle dannagle
Wed Mar 19 15:44:58 EDT 2008


Hello,

On Mar 19, 2008, at 3:33 PM, Bill Long wrote:
>
>  Thus, it appears you are required to
> have an explicit interface, even if the word asynchronous never  
> appears
> in any of the declarations, if any of the dummy arguments appears in  
> an
> async I/O list.  For a case like that, I don't see how the compiler
> would deduce anything interesting from the interface, at least related
> to the side effects of async I/O.

With a an asynchronous dummy in an explicit interface,
the compiler knows not to pass by register.  Even if the compiler's
conventions would otherwise encourage doing so.

-- 
Cheers!

Dan Nagle






More information about the J3 mailing list