[petsc-dev] KSP preonly does not support UNPRECONDITIONED

[Lisandro Dalcin]

On 20 June 2017 at 18:50, Jed Brown <jed at jedbrown.org> wrote:
> It would be -ksp_norm_type NONE.
>
> PETSc: they want -ksp_norm_type UNPRECONDITIONED for everything.  Should
> PREONLY be made to "support" UNPRECONDITIONED (and PRECONDITIONED)
> despite not computing norms?
>

IMHO, yes.

-- 
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
Thuwal 23955-6900, Kingdom of Saudi Arabia
http://www.kaust.edu.sa

Office Phone: +966 12 808-0459