<html><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><div><div class="AppleOriginalContents"><blockquote type="cite"><div><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 18px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">By the way, I managed yesterday to make a working implementation of my own example and was planning to send it<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">after cleaning it up and maybe optimizing a bit. I’ve attached it if your curious (or just want to have a good laugh :))<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Kind regards,<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Carl-Johan<o:p></o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; border-image: none; padding: 3pt 0cm 0cm;"><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><b>From:</b><span class="Apple-converted-space"> </span>Barry Smith <bsmith@petsc.dev><span class="Apple-converted-space"> </span><br><b>Sent:</b><span class="Apple-converted-space"> </span>Monday, April 24, 2023 12:49 AM<br><b>To:</b><span class="Apple-converted-space"> </span>Carl-Johan Thore <carl-johan.thore@liu.se><br><b>Cc:</b><span class="Apple-converted-space"> </span>PETSc <petsc-users@mcs.anl.gov><br><b>Subject:</b><span class="Apple-converted-space"> </span>Re: [petsc-users] Fieldsplit with redistribute<o:p></o:p></div></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> I have added support for PCREDISTRIBUTE to propogate your PCFieldSplitSetIS() down to an inner PCFIELDSPLIT. You can <o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">access it with<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> git fetch<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> git checkout <b><span style="font-size: 10.5pt; font-family: Menlo, serif; color: rgb(200, 20, 201);">barry/2023-04-22/fieldsplit-fields-propogate</span></b><o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><b><span style="font-size: 10.5pt; font-family: Menlo, serif; color: rgb(200, 20, 201);"> </span></b>./configure<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> make all check<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> Take a look at src/ksp/ksp/tutorials/ex84.c and run with the options at the bottom of the file.<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> Please let us know at <a href="https://gitlab.com/petsc/petsc/-/merge_requests/6366" style="color: blue; text-decoration: underline;">https://gitlab.com/petsc/petsc/-/merge_requests/6366</a> if it works for you or you have any difficulties.<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> Barry<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><br><br><o:p></o:p></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;"><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">On Apr 20, 2023, at 10:14 AM, Carl-Johan Thore <<a href="mailto:carl-johan.thore@liu.se" style="color: blue; text-decoration: underline;">carl-johan.thore@liu.se</a>> wrote:<o:p></o:p></div></div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"><o:p> </o:p></div><div><div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Great, thanks! I’ve attached the code, a makefile, and a 1-page power-point which hopefully explains<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">what I’m trying to do on this little toy-problem. There is obviously (?) something I need to add around<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">line 327 in the code in order to move the indices to the correct rank.<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> <o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;">Output should be something like this when running:<o:p></o:p></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"> <o:p></o:p></div></div></div></div></blockquote></div></div></div><div><div style="margin: 0cm; font-size: 11pt; font-family: Calibri, sans-serif;"></div></div></div></div></blockquote></div></div></body></html>