[petsc-dev] MATLMVM

[Matthew Knepley]

On Tue, Sep 11, 2018 at 9:47 AM Dener, Alp <adener at anl.gov> wrote:

> 1 base type and 8 subtypes. If there’s a better convention/structure to do
> this in PETSc, I’d be happy to get a refactoring done ASAP this week so
> that it’s cleaner in the release.
>

I guess what Lisandro is asking is, what backend differences are there to
make so many type necessary.

Looking at the few I recognize, it seems like they encode the sum of rank 1
matrices (BFGS, SR1). Why
would we have separate types for this two things?

  Thanks,

     Matt


> —
> Alp Dener
> Argonne National Laboratory
> https://mcs.anl.gov/person/alp-Dener
>
> On Sep 11, 2018, at 5:10 AM, Lisandro Dalcin <dalcinl at gmail.com> wrote:
>
> So now we have 9 new, top-level, public matrix types for LMVM... Really?
>
> #define MATLMVM            "lmvm"
> #define MATLMVMDFP         "lmvmdfp"
> #define MATLMVMBFGS        "lmvmbfgs"
> #define MATLMVMSR1         "lmvmsr1"
> #define MATLMVMBRDN        "lmvmbrdn"
> #define MATLMVMBADBRDN     "lmvmbadbrdn"
> #define MATLMVMSYMBRDN     "lmvmsymbrdn"
> #define MATLMVMSYMBADBRDN  "lmvmsymbadbrdn"
> #define MATLMVMDIAGBRDN    "lmvmdiagbrdn"
>
>
>
>
> --
> Lisandro Dalcin
> ============
> Research Scientist
> Computer, Electrical and Mathematical Sciences & Engineering (CEMSE)
> Extreme Computing Research Center (ECRC)
> King Abdullah University of Science and Technology (KAUST)
> http://ecrc.kaust.edu.sa/
>
> 4700 King Abdullah University of Science and Technology
> al-Khawarizmi Bldg (Bldg 1), Office # 0109
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> http://www.kaust.edu.sa
>
> Office Phone: +966 12 808-0459
>
>

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https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
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