Re: [petsc-dev] DMplex: Natural Ordering and subDM

2017-11-27 Thread Jed Brown
Blaise A Bourdin writes: > There may be good reasons to want to read / write in a given ordering: > post-processing an existing computation, applying non trivial boundary > conditions that need to be computed separately, or restarting a computation > on a different number of processors. > Als

Re: [petsc-dev] DMplex: Natural Ordering and subDM

2017-11-27 Thread Blaise A Bourdin
There may be good reasons to want to read / write in a given ordering: post-processing an existing computation, applying non trivial boundary conditions that need to be computed separately, or restarting a computation on a different number of processors. Also, Exodus has restriction on cell ord

Re: [petsc-dev] DMplex: Natural Ordering and subDM

2017-11-27 Thread Jed Brown
Matthew Knepley writes: > On Mon, Nov 27, 2017 at 9:24 PM, Jed Brown wrote: > >> Matthew Knepley writes: >> >> > On Mon, Nov 27, 2017 at 8:08 PM, Jed Brown wrote: >> > >> >> I don't know the answer to your question (Matt?), but do you really need >> >> to reorder the entire mesh or would it be

Re: [petsc-dev] DMplex: Natural Ordering and subDM

2017-11-27 Thread Matthew Knepley
On Mon, Nov 27, 2017 at 9:24 PM, Jed Brown wrote: > Matthew Knepley writes: > > > On Mon, Nov 27, 2017 at 8:08 PM, Jed Brown wrote: > > > >> I don't know the answer to your question (Matt?), but do you really need > >> to reorder the entire mesh or would it be sufficient to label your > >> poin

Re: [petsc-dev] DMplex: Natural Ordering and subDM

2017-11-27 Thread Jed Brown
Matthew Knepley writes: > On Mon, Nov 27, 2017 at 8:08 PM, Jed Brown wrote: > >> I don't know the answer to your question (Matt?), but do you really need >> to reorder the entire mesh or would it be sufficient to label your >> points with their original numbering? > > > Maybe I am wrong, but I t

Re: [petsc-dev] DMplex: Natural Ordering and subDM

2017-11-27 Thread Matthew Knepley
On Mon, Nov 27, 2017 at 8:08 PM, Jed Brown wrote: > I don't know the answer to your question (Matt?), but do you really need > to reorder the entire mesh or would it be sufficient to label your > points with their original numbering? Maybe I am wrong, but I think it amounts to the same thing. I

Re: [petsc-dev] DMplex: Natural Ordering and subDM

2017-11-27 Thread Jed Brown
I don't know the answer to your question (Matt?), but do you really need to reorder the entire mesh or would it be sufficient to label your points with their original numbering? Blaise A Bourdin writes: > Hi, > I am fighting with natural ordering in DMplex with multi-fields / multi > components