Dear Petsc team,<br><br>I would like to use ML as a preconditioner for a linear elasticity problem.<br>I wonder if there is a way to indicate ML that it is dealing with a vector problem. <br>I know that when using Prometheus, one must use a block matrix, and I would like to know if there is a trick <br>
in order to use ML in an optimal manner for vector problems.<br><br>Regards,<br>Nicolas<br>