[petsc-dev] PETSC_COMM_SELF == 0

[Mark Adams]

Humm, that is what I see (appended).  I put a print in PETSC and see this
but I still have PETSC_COMM_SELF==0 in my fortran code.

Strange, the compile lines look close enough and the example ex61f sees a
good PETSC_COMM_SELF ...

Mark

(gdb) where
#0  PetscInitializeFortran () at
/Users/markadams/Codes/petsc/src/sys/objects/ftn-custom/zstartf.c:48
#1  0x000000010027d985 in petscinitialize_ (filename=0x101eaab40 "",
ierr=0x7fff5fbff18c, len=80) at
/Users/markadams/Codes/petsc/src/sys/objects/ftn-custom/zstart.c:398
#2  0x00000001000015b2 in tpetsc () at ex61f.F90:111
#3  0x0000000100002a3d in main (argc=1, argv=0x7fff5fbff968
"/Users/markadams/Codes/petsc/src/ksp/ksp/examples/tutorials/ex61f") at
ex61f.F90:60
Current language:  auto; currently minimal
(gdb) n
50        if (PETSC_COMM_WORLD) c1 =  MPI_Comm_c2f(PETSC_COMM_WORLD);
(gdb) p c1
$1 = 0
(gdb) n
51        c2 =  MPI_Comm_c2f(PETSC_COMM_SELF);
(gdb) p c1
$2 = 1140850688
(gdb)

On Tue, Mar 31, 2015 at 1:32 PM, Satish Balay <balay at mcs.anl.gov> wrote:

> 1. Check if this is reproduceable with a petsc example for your build.
>
> 2. if you run in the debugger - and place a breakpoint in
> PetscInitializeFortran() - you should see the following trace.
>
> (gdb) where
> #0  PetscInitializeFortran () at
> /home/balay/petsc/src/sys/objects/ftn-custom/zstartf.c:48
> #1  0x00007ffff66c396d in petscinitialize_ (filename=0x603640
> <petscfortran1_> "",
>     ierr=0x7fffffffe0bc, len=80) at
> /home/balay/petsc/src/sys/objects/ftn-custom/zstart.c:398
> #2  0x0000000000401a42 in MAIN__ () at ex2f.F:102
> (gdb) n
> 50      if (PETSC_COMM_WORLD) c1 =  MPI_Comm_c2f(PETSC_COMM_WORLD);
> (gdb) p c1
> $1 = 0
> (gdb) n
> 51      c2 =  MPI_Comm_c2f(PETSC_COMM_SELF);
> (gdb) p c1
> $2 = 1140850688
>
>
> Satish
>
> On Tue, 31 Mar 2015, Mark Adams wrote:
>
> > I'm not sure where we are.  My code works on Edison but fails on OSX.
> > Should I call PetscInitializeFortran?  I do not have a C main.
> >
> >
> > On Tue, Mar 31, 2015 at 12:14 PM, Barry Smith <bsmith at mcs.anl.gov>
> wrote:
> >
> > >
> > > PetscErrorCode PetscInitializeFortran(void)
> > > {
> > >   MPI_Fint c1=0,c2=0;
> > >
> > >   if (PETSC_COMM_WORLD) c1 =  MPI_Comm_c2f(PETSC_COMM_WORLD);
> > >   c2 =  MPI_Comm_c2f(PETSC_COMM_SELF);
> > >   petscsetcommonblock_(&c1,&c2);
> > >
> > > Note that this routine is called automatically by the Fortran
> > > petscinitialize function.
> > >
> > >   Barry
> > >
> > > > On Mar 31, 2015, at 10:19 AM, Matthew Knepley <knepley at gmail.com>
> wrote:
> > > >
> > > > On Tue, Mar 31, 2015 at 10:13 AM, Mark Adams <mfadams at lbl.gov>
> wrote:
> > > > No, I don't have a C main program (like the doc says).
> > > >
> > > > I can see COMM_WORLD set in the Fortran initialize wrapper, but
> where is
> > > COMM_SELF set?
> > > >
> > > >    MAtt
> > > >
> > > > On Tue, Mar 31, 2015 at 11:05 AM, Matthew Knepley <knepley at gmail.com
> >
> > > wrote:
> > > > On Tue, Mar 31, 2015 at 5:44 AM, Mark Adams <mfadams at lbl.gov> wrote:
> > > > I'm finding that my fortran code on OSX has PETSC_COMM_SELF == 0.
> > > >
> > > > I can not find where PETSC_COMM_SELF is created.
> > > >
> > > > Its set in PetscInitializeFortran(). Did you call that?
> > > >
> > > >   Matt
> > > >
> > > >
> > > > Mark
> > > >
> > > >
> > > >
> > > > --
> > > > 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
> > > >
> > > >
> > > >
> > > >
> > > > --
> > > > 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
> > >
> > >
> >
>
>
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