Hi, everyone<br><br>I am using adaptive mesh refinement to solve a group of coupled steady-state&nbsp;linear PDEs. I will use PETSC as the solver. Did&nbsp;anyone&nbsp;have&nbsp;experience&nbsp;in&nbsp;such&nbsp;problem.&nbsp;I&nbsp;want&nbsp;to&nbsp;know&nbsp;which&nbsp;solving&nbsp;method&nbsp;is&nbsp;more&nbsp;efficient,&nbsp;including&nbsp;iterative&nbsp;method&nbsp;and&nbsp;preconditioner.&nbsp;Thanks&nbsp;a&nbsp;lot.
<br> <br>Regards,<br>Yujie<br>