message: Set operator size in AmgXSolver.
diff: @@ -818,6 +818,9 @@ void AmgXSolver::SetMatrixMPITeams(const HypreParMatrix &A,
  void AmgXSolver::SetOperator(const Operator& op)
  {
  + height = op.Height();
  + width = op.Width();
  +
  if (const SparseMatrix* Aptr =
  dynamic_cast<const SparseMatrix*>(&op))
  {
  