[mpich-discuss] [PATCH] Use attribute layout_compatible for pair types

[Dave Goodell]

Both implemented and pushed as d440abb and ac15f7a.  Thanks.

-Dave

On Jan 1, 2013, at 11:14 PM CST, Jed Brown wrote:

> In addition, I suggest guarding these definitions. Leaving these in increases the total number of symbols in an example executable linking PETSc by a factor of 2. (They're all read-only, but they're still there.) Clang is smart enough to remove these, presumably because it understands the special attributes.
> 
> static const MPI_Datatype mpich_mpi_float_int       MPICH_ATTR_TYPE_TAG_LAYOUT_COMPATIBLE(struct mpich_struct_mpi_float_int)       = MPI_FLOAT_INT;
> static const MPI_Datatype mpich_mpi_double_int      MPICH_ATTR_TYPE_TAG_LAYOUT_COMPATIBLE(struct mpich_struct_mpi_double_int)      = MPI_DOUBLE_INT;
> static const MPI_Datatype mpich_mpi_long_int        MPICH_ATTR_TYPE_TAG_LAYOUT_COMPATIBLE(struct mpich_struct_mpi_long_int)        = MPI_LONG_INT;
> static const MPI_Datatype mpich_mpi_short_int       MPICH_ATTR_TYPE_TAG_LAYOUT_COMPATIBLE(struct mpich_struct_mpi_short_int)       = MPI_SHORT_INT;
> static const MPI_Datatype mpich_mpi_2int            MPICH_ATTR_TYPE_TAG_LAYOUT_COMPATIBLE(struct mpich_struct_mpi_2int)            = MPI_2INT;
> static const MPI_Datatype mpich_mpi_long_double_int MPICH_ATTR_TYPE_TAG_LAYOUT_COMPATIBLE(struct mpich_struct_mpi_long_double_int) = MPI_LONG_DOUBLE_INT;
> 
>  
> 
> 
> On Tue, Jan 1, 2013 at 11:48 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>> ---
>>  src/include/mpi.h.in | 12 ++++++------
>>  1 file changed, 6 insertions(+), 6 deletions(-)
>>