<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I'm fairly sure I know the answer to this question after looking up the source code but is it possible to create sub-splits while using a DMShell?<div>To be more specific I have a matrix which I decompose into 4 fields and I would like to do something like</div><div><br></div><div>-ksp_type gmres</div><div>-pc_type fieldsplit</div><div>-pc_fieldsplit_type schur</div><div>-pc_fieldsplit_schur_factorization_type full</div><div>-pc_fieldsplit_schur_precondition self</div><div>-pc_fieldsplit_0_fields 0,1</div><div>-pc_fieldsplit_1_fields 2,3</div><div>...</div><div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Best,<br>Luc</span></div></div></body></html>