On Thu, Nov 15, 2012 at 6:37 AM, Martin Sandve Alnæs <[email protected]> wrote: > ---------- Videresendt melding ---------- > Fra: > Dato: 15. nov. 2012 07:35 > Emne: Re: [Dolfin] unsigned int -> std::size_t > Til: "Garth N. Wells" <[email protected]> > > > A typedef for the chosen linear algebra backend? How is that possible with > dynamic choice of backend? >
A 'primary' backend will need to be decided at configure time, and the index type will match the index type of the primary backend. I don't see any way to get around this. Templating some functions will not help because the dof map needs to use a compatible index type, and this would tie a dof map to a backend (and templates will make the code more complicated). At present we just assume that all backends use an index type that is compatible with unsigned int, but we can't justify this assumption. Flaws in DOLFIN la handling have shown up with the release of Trilinos 11, which introduces 64-bit ints to its interface. PETSc uses PetscInt, and we have just assumed that it's compatible with unsigned int. Garth > Martin > > Den 14. nov. 2012 18:06 skrev "Garth N. Wells" <[email protected]> følgende: > > _______________________________________________ > Mailing list: https://launchpad.net/~dolfin > Post to : [email protected] > Unsubscribe : https://launchpad.net/~dolfin > More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~dolfin Post to : [email protected] Unsubscribe : https://launchpad.net/~dolfin More help : https://help.launchpad.net/ListHelp
