[petsc-users] error of compiling complex

[Sam Guo]

Hi Satish,
   Works. Thanks a lot for your help.

BR,
Sam

On Thu, May 21, 2020 at 2:51 PM Satish Balay <balay at mcs.anl.gov> wrote:

> Its PETSC_USE_COMPLEX [undefined for --with-scalar-type=real]
>
> Satish
>
> On Thu, 21 May 2020, Sam Guo wrote:
>
> > What preprocessor directive should I use for real: PETSC_USE_SCALAR_REAL
> > or PETSC_USE_REAL_DOUBLE?
> >
> > On Thu, May 21, 2020 at 2:00 PM Satish Balay <balay at mcs.anl.gov> wrote:
> >
> > > We usually do the other way around [build petsc with the correct
> > > compilers and option] and make apps use the same flags [via petsc
> > > formatted makefiles].
> > >
> > > However you should be able to construct petsc configure command and
> > > force petsc to build exactly as you need.
> > >
> > > Satish
> > >
> > > On Thu, 21 May 2020, Sam Guo wrote:
> > >
> > > > The reason we don’t use petsc build tool is to make sure we use same
> > > > compiler and flags to build our code and petsc.
> > > >
> > > > On Thursday, May 21, 2020, Satish Balay <balay at mcs.anl.gov> wrote:
> > > >
> > > > > Is there a reason you can't use petsc build tools?
> > > > >
> > > > > config/gmakegen.py processes the mkaefiles in source dirs - and
> > > determines
> > > > > the list of files to build [for a given configure setup]
> > > > >
> > > > > src/ksp/pc/impls/tfs/makefile has:
> > > > >
> > > > > #requiresscalar real
> > > > >
> > > > > i.e the sources in this dir are compiled only when
> > > --with-scalar-type=real
> > > > > and not when --with-scalar-type=complex etc..
> > > > >
> > > > > Satish
> > > > >
> > > > > On Thu, 21 May 2020, Sam Guo wrote:
> > > > >
> > > > > > Thanks for the quick response. I have my own makefile based on
> PETSc
> > > > > > makefile. I need to update my makefile. It seems PETSc generates
> the
> > > > > > makefile on fly. I struggle to figure out which files I should
> skip
> > > for
> > > > > > complex. Could you tell me what files I should skip?
> > > > > >
> > > > > > Thanks,
> > > > > > Sam
> > > > > >
> > > > > > On Thu, May 21, 2020 at 12:31 PM Matthew Knepley <
> knepley at gmail.com>
> > > > > wrote:
> > > > > >
> > > > > > > On Thu, May 21, 2020 at 3:25 PM Sam Guo <sam.guo at cd-adapco.com
> >
> > > wrote:
> > > > > > >
> > > > > > >> Dear PETSc dev team,
> > > > > > >>    I got following error of compiling complex:
> > > > > > >> ../../../petsc/src/ksp/pc/impls/tfs/ivec.c: In function
> > > > > ‘PCTFS_rvec_max’:
> > > > > > >> ../../../petsc/include/petscmath.h:532:30: error: invalid
> > > operands to
> > > > > > >> binary < (have ‘PetscScalar’ {aka ‘_Complex double’} and
> > > > > ‘PetscScalar’ {aka
> > > > > > >> ‘_Complex double’})
> > > > > > >>   532 | #define PetscMax(a,b)   (((a)<(b)) ?  (b) : (a))
> > > > > > >>
> > > > > > >>    Any idea what I did wrong? I am using version 3.11.3.
> > > > > > >>
> > > > > > >
> > > > > > > Can you upgrade to 3.13?
> > > > > > >
> > > > > > >   Thanks,
> > > > > > >
> > > > > > >     Matt
> > > > > > >
> > > > > > >
> > > > > > >> Thanks,
> > > > > > >> Sam
> > > > > > >>
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > 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/>
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
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