Hi Mani, > I can't seem to find an option to use viennacl for vectors created using > a DM (for ex: -dm_vec_type viennacl, although there is an option for > matrices: -dm_mat_type seq/mpiaijviennacl). Could this be a bug? Sounds like a bug, yes. I'll double-check and push a fix. Thanks and best regards, Karli