call p%smoothers_build(a,desc_a,p,info[,amold,vmold,imold])
This method builds the smoothers and the coarsest-level solvers for the multilevel preconditioner p, according to the requirements made by the user through the methods init and set, and based on the aggregation hierarchy produced by a previous call to hierarchy_build (see Section 5.3).
Arguments
a | type(psb_xspmat_type), intent(in). |
| The sparse matrix structure containing the local part of the matrix to be preconditioned. Note that x must be chosen according to the real/complex, single/double precision version of AMG4PSBLAS under use. See the PSBLAS User’s Guide for details [17]. |
desc_a | type(psb_desc_type), intent(in). |
| The communication descriptor of a. See the PSBLAS User’s Guide for details [17]. |
info | integer, intent(out). |
| Error code. If no error, 0 is returned. See Section 7 for details. |
amold | class(psb_x_base_sparse_mat), intent(in), optional. |
| The desired dynamic type for internal matrix components; this allows e.g. running on GPUs; it needs not be the same on all processes. See the PSBLAS User’s Guide for details [17]. |
vmold | class(psb_x_base_vect_type), intent(in), optional. |
| The desired dynamic type for internal vector components; this allows e.g. running on GPUs. |
imold | class(psb_i_base_vect_type), intent(in), optional. |
| The desired dynamic type for internal integer vector components; this allows e.g. running on GPUs. |