[Gretl-devel] Re: MPI data transfer

On 18.10.2019 22:08, Allin Cottrell wrote: > On Fri, 18 Oct 2019, Marcin Błażejowski wrote: > >>>> ALT_BUNSEND: 1, NEW_BUNCAST: 1 => crash >>>> ALT_BUNSEND: 0, NEW_BUNCAST: 0 => works >>> OK, but what about ALT_BUNSEND: 0, NEW_BUNCAST: 1 ? >> >> Crash. > > The problems exposed by Marcin's script are fixed in git -- which > doesn't mean, of course, that there are no bugs remaining in the new > MPI data transfer mechanism! > > For anyone wanting to mess with this: the new stuff is now controlled > by a single symbol in gretl_mpi.c, namely NEW_BUNPASS. A value of 0 > for this reverts to the old code; a value of 1 activates the new code > for mpibcast only; and a value of 2 or greater activates the new code > for both mpibcast and mpisend/mpirecv. I've just finished tests with different NEW_BUNPASS values in two scenarios: mpisend-ing bundles or arrays and everything works fine.