The types listed by Wang Jing-Yuan are mentioned on https://petsc.org/main/docs/manualpages/TS/TSIRK.html
So maybe they do exist, but I haven't tried them. TSARKIMEX are a better-tested alternative? Ed On Tue, Oct 5, 2021 at 2:44 AM <[email protected]> wrote: > Send petsc-dev mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.mcs.anl.gov/mailman/listinfo/petsc-dev > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of petsc-dev digest..." > > > Today's Topics: > > 1. Question about the fully implicit Runge-Kutta methods (TS) > (Wang Jingyuan) > 2. Re: Question about the fully implicit Runge-Kutta methods > (TS) (Matthew Knepley) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 5 Oct 2021 03:56:48 +0000 > From: Wang Jingyuan <[email protected]> > To: "[email protected]" <[email protected]> > Subject: [petsc-dev] Question about the fully implicit Runge-Kutta > methods (TS) > Message-ID: <[email protected]> > Content-Type: text/plain; charset="utf-8" > > Dear Sir or Madam, > > I am a student of the University of Macau, I am trying to learn PETSc and > I have two questions about the TSIRK. > > 1.PETSc 3.16.0 adds ?irk" for the TSType and it offers many options like > TSIRK1BEE, TSIRK2C, TSIRK2D, TSIRK2E, TSIRK3, TSIRKL2, I am not sure how > to use them and if only Gaussian points can be used (Radau or Labatto may > not offered). > > 2.Maybe there is a similar option to implement the fully implicit > Runge-Kutta methods in PETSc 3.15 or other previous versions? For example, > if I want to solve a time dependent problem with a butcher table like > below, do I need to input it by myself? > [cid:CF3DAFB6-6115-45C2-BEE4-0ADCA66709BB] > > Thank you very much for your help. > > Best regards, > Wang Jing-Yuan > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20211005/ce44e7c5/attachment-0001.html > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: PastedGraphic-1.jpeg > Type: image/jpeg > Size: 6702 bytes > Desc: PastedGraphic-1.jpeg > URL: < > http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20211005/ce44e7c5/attachment-0001.jpeg > > > > ------------------------------ > > Message: 2 > Date: Tue, 5 Oct 2021 06:43:02 -0400 > From: Matthew Knepley <[email protected]> > To: Wang Jingyuan <[email protected]> > Cc: "[email protected]" <[email protected]> > Subject: Re: [petsc-dev] Question about the fully implicit Runge-Kutta > methods (TS) > Message-ID: > < > camyg4gkkpmj1ma5dmssycjhsj_5pkisz0u78wbjqbxth_v+...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > On Tue, Oct 5, 2021 at 12:42 AM Wang Jingyuan <[email protected]> > wrote: > > > Dear Sir or Madam, > > > > I am a student of the University of Macau, I am trying to learn PETSc and > > I have two questions about the TSIRK. > > > > 1.PETSc 3.16.0 adds ?irk" for the TSType and it offers many options like > TSIRK1BEE, > > TSIRK2C, TSIRK2D, TSIRK2E, TSIRK3, TSIRKL2, > > > > The types you mention above do not exist. For instance, the first one > "TSIRK1BEE" is actually > https://petsc.org/main/docs/manualpages/TS/TSARKIMEX1BEE.html > > > > I am not sure how to use them and if only Gaussian points can be used > > (Radau or Labatto may not offered). > > > > There is currently only one IRK type, which is the Gauss method. > > > > 2.Maybe there is a similar option to implement the fully implicit > > Runge-Kutta methods in PETSc 3.15 or other previous versions? For > example, > > if I want to solve a time dependent problem with a butcher table like > > below, do I need to input it by myself? > > > > Thank you very much for your help. > > > > I do not understand your question. IRK is only present is 3.16 > > Thanks, > > Matt > > > > Best regards, > > Wang Jing-Yuan > > > > > -- > What most experimenters take for granted before they begin their > experiments is infinitely more interesting than any results to which their > experiments lead. > -- Norbert Wiener > > https://www.cse.buffalo.edu/~knepley/ < > http://www.cse.buffalo.edu/~knepley/> > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20211005/3b41e7c8/attachment.html > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: PastedGraphic-1.jpeg > Type: image/jpeg > Size: 6702 bytes > Desc: not available > URL: < > http://lists.mcs.anl.gov/pipermail/petsc-dev/attachments/20211005/3b41e7c8/attachment.jpeg > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > petsc-dev mailing list > [email protected] > https://lists.mcs.anl.gov/mailman/listinfo/petsc-dev > > > ------------------------------ > > End of petsc-dev Digest, Vol 154, Issue 7 > ***************************************** > -- Ed Bueler Dept of Mathematics and Statistics University of Alaska Fairbanks Fairbanks, AK 99775-6660 306C Chapman
