Some grids that are processed by getGrid (TOP_ALB for example) need to be...

Some grids that are processed by getGrid (TOP_ALB for example) need to be available at all processes, so making that the default. It will be good to keep the Reduce vs Allreduce option in the code, for future use.

alpine3d/SnowpackInterface.cc

@@ -792,7 +792,7 @@ mio::Grid2DObject SnowpackInterface::getGrid(const SnGrids::Parameters& param) c
 	}
 	o_grid2D.grid2D.fill(tmp_grid2D.grid2D, mpi_offset, 0, mpi_nx, dimy);
 
-	MPIControl::instance().reduce_sum(o_grid2D, false);
+	MPIControl::instance().reduce_sum(o_grid2D);
 	//with some MPI implementations, when transfering large amounts of data, the buffers might get full and lead to a crash
 
 	if (errCount>0) {