[petsc-dev] petsc4py, TAO, and complex scalars

[Satish Balay]

Yeah - I had merged this branch to next to test it out.  Lisandro is
on travel - so might not be checking e-mails.

Perhaps tao/complex build should be enabled only for c99/complex..

Satish

On Fri, 11 Jul 2014, Barry Smith wrote:

> 
>    There are a truck load of complex related errors in tao in next: http://ftp.mcs.anl.gov/pub/petsc/nightlylogs/archive/2014/07/10/filtered-make_next_arch-freebsd-cxx-cmplx-pkgs-dbg_wii.log  see also the other complex builds at http://ftp.mcs.anl.gov/pub/petsc/nightlylogs/archive/2014/07/10/next.html
> 
> 
>   not sure if they are related to your change
> 
>    Barry
> 
> 
> On Jul 8, 2014, at 8:57 AM, Lisandro Dalcin <dalcinl at gmail.com> wrote:
> 
> > On 8 July 2014 15:16, Matthew Knepley <knepley at gmail.com> wrote:
> >> On Tue, Jul 8, 2014 at 2:09 PM, Lisandro Dalcin <dalcinl at gmail.com> wrote:
> >>> 
> >>> Some time ago I merged tao4py in petsc4py following PETSc. Now I
> >>> realize that TA0 is not available for --with-scalar-type=complex, all
> >>> of the TAO API is not built. Adding support for this case in petsc4py
> >>> will be rather involved, so I want to propose an alternative.
> >>> 
> >>> I have a rather small patch that enables the compile of interface TAO
> >>> APIs.  With this patch, I can build petsc4py, but obviously any
> >>> attempt of use a specific TAO solver type fails at runtime because the
> >>> solve implementations are not registered. But at least, petsc4py can
> >>> be built with complex scalars and all other PETSc components can be
> >>> used normally.
> >>> 
> >>> What do you think? If you accept this proposal, I'll put all this in a
> >>> branch for review. Additionally, I would like to merge this fix into
> >>> maint.
> >> 
> >> 
> >> That sounds fine to me. We will fix this for the next release, so it would
> >> just hang around until then.
> >> 
> > 
> > https://bitbucket.org/petsc/petsc/branch/dalcinl/tao-complex_scalars
> > 
> > This hook is a hack, but seems the easiest way to support complex scalars:
> > https://bitbucket.org/petsc/petsc/commits/a62a097f5bb5c39fb23ca6e1f9f37f7c197bfa6d?at=master#Lsrc/tao/matrix/lmvmmat.cT5
> > 
> > Please review,
> > 
> > -- 
> > Lisandro Dalcin
> > ---------------
> > CIMEC (UNL/CONICET)
> > Predio CONICET-Santa Fe
> > Colectora RN 168 Km 472, Paraje El Pozo
> > 3000 Santa Fe, Argentina
> > Tel: +54-342-4511594 (ext 1016)
> > Tel/Fax: +54-342-4511169
> 
>