how to use PetscMap?

[Matthew Knepley]

http://www-unix.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/Sys/PetscSplitOwnership.html

   Matt

On 11/2/06, Yixun Liu <yxliu at fudan.edu.cn> wrote:
> Hi,
>
> I want to use PetscMap to gets the range of values owned by this process, e.g.,PetscMapGetLocalRange(map,&Istart,&Iend). Then according to Istart and Iend to determine the parameters used by MatCreateMPIAIJ to create a matrix.
>
> Best,
>
> Yixun
>
> ----- Original Message -----
> From: "Matthew Knepley" <knepley at gmail.com>
> To: <petsc-users at mcs.anl.gov>
> Sent: Thursday, November 02, 2006 9:56 PM
> Subject: Re: how to use PetscMap?
>
>
> > There is no replacement. What are you tring to do here?
> >
> >   Matt
> >
> > On 11/2/06, Yixun Liu <yxliu at fudan.edu.cn> wrote:
> >> Hi,
> >>
> >> I want to change the code, which is based on old version PETSC to version 2.3.2. The old petsc code are,
> >>
> >> PetscMap map;
> >> ierr = PetscMapCreateMPI(PETSC_COMM_WORLD,PETSC_DECIDE,n,&map);CHKERRQ(ierr);
> >> ierr = PetscMapGetLocalRange(map,&Istart,&Iend); CHKERRQ(ierr);
> >> ierr = PetscMapDestroy(map); CHKERRQ(ierr);
> >>
> >> If 2.3.2 does not support PetscMap, which class should I use?
> >>
> >> Best,
> >>
> >> Yixun
> >>
> >>
> >>
> >> ----- Original Message -----
> >> From: "Matthew Knepley" <knepley at gmail.com>
> >> To: <petsc-users at mcs.anl.gov>
> >> Sent: Thursday, November 02, 2006 9:07 PM
> >> Subject: Re: how to use PetscMap?
> >>
> >>
> >> > No, in 2.3.2 PetscMap no longer exists.
> >> >
> >> >   Matt
> >> >
> >> > On 11/2/06, Yixun Liu <yxliu at fudan.edu.cn> wrote:
> >> >>
> >> >>
> >> >> Hi,
> >> >>
> >> >> I reveive the error as,
> >> >>
> >> >> [0]PETSC ERROR:
> >> >> ------------------------------------------------------------------------
> >> >> [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
> >> >> probably memory access out of range
> >> >> [0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger
> >> >> [0]PETSC ERROR: or see
> >> >> http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html#Signal[0]PETSC
> >> >> ERROR: or try http://valgrind.org on linux or man libgmalloc on Apple to
> >> >> find memory corruption errors
> >> >> [0]PETSC ERROR: likely location of problem given in stack below
> >> >> [0]PETSC ERROR: ---------------------  Stack Frames
> >> >> ------------------------------------
> >> >> [0]PETSC ERROR: Note: The EXACT line numbers in the stack are not available,
> >> >> [0]PETSC ERROR:       INSTEAD the line number of the start of the function
> >> >> [0]PETSC ERROR:       is given.
> >> >> [0]PETSC ERROR: [0] PetscMapInitialize line 41
> >> >> src/vec/vec/impls/mpi/d:\MyVC\PETSC-~1.2-P\src\vec\vec\impls\mpi\pmap.c
> >> >> [0]PETSC ERROR: --------------------- Error Message
> >> >> ------------------------------------
> >> >> [0]PETSC ERROR: Signal received!
> >> >> [0]PETSC ERROR:
> >> >> ------------------------------------------------------------------------
> >> >> [0]PETSC ERROR: Petsc Release Version 2.3.2, Patch 3, Fri Sep 29 17:09:34
> >> >> CDT 2006 HG revision:
> >> >> 9215af156a9cbcdc1ec666e2b5c7934688ddc526
> >> >> [0]PETSC ERROR: See docs/changes/index.html for recent updates.
> >> >> [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
> >> >> [0]PETSC ERROR: See docs/index.html for manual pages.
> >> >> [0]PETSC ERROR:
> >> >> ------------------------------------------------------------------------
> >> >> [0]PETSC ERROR: Unknown Name on a cygwin-cx named DMRC-6700512 by DMRC-user
> >> >> Thu Nov 02 16:22:47 2006
> >> >> [0]PETSC ERROR: Libraries linked from
> >> >> /cygdrive/D/MyVC/petsc-2.3.2-p3/lib/cygwin-cxx-debug
> >> >> [0]PETSC ERROR: Configure run at Wed Nov  1 10:08:10 2006
> >> >> [0]PETSC ERROR: Configure options
> >> >> --with-mpi-dir=/cygdrive/d/MPICH2 --with-cc="win32fe cl"
> >> >> --with-fc=0 --with-cxx="win32fe cl" --with-clanguage=cxx
> >> >> --with-blas-lapack-dir=/cygdrive/D/MyVC/petsc-2.3.2-p3/externalpackages/w_mkl_serial_p_8.1.001/mkl_serial_8.1/mkl_8.1_serial/ia32/lib
> >> >> COPTFLAGS="-MD -Z7" CXXOPTFLAGS="-MD -Z7" --useThreads=0 --with-shared=0
> >> >> [0]PETSC ERROR:
> >> >> ------------------------------------------------------------------------
> >> >> [0]PETSC ERROR: User provided function() line 0 in unknown directory unknown
> >> >> file
> >> >> unable to read the cmd header on the pmi context, Undefined dynamic error
> >> >> code.
> >> >>
> >> >> job aborted:
> >> >> rank: node: exit code[: error message]
> >> >> 0: dmrc-6700512: 59: application called MPI_Abort(MPI_COMM_WORLD, 59) -
> >> >> process 0
> >> >>
> >> >> I think this error maybe caused by these codes,
> >> >>
> >> >>  PetscMap *map;
> >> >>  ierr = PetscMapInitialize(PETSC_COMM_WORLD, map);
> >> >>  CHKERRQ(ierr);
> >> >>  ierr = PetscMapSetSize (map, n);
> >> >>  ierr = PetscMapGetLocalRange(map,&Istart,&Iend);
> >> >> CHKERRQ(ierr);
> >> >>
> >> >> Is it correct to use the PetscMap like this?
> >> >>
> >> >> Best,
> >> >>
> >> >> Yixun
> >> >>
> >> >>
> >> >>
> >> >>
> >> >
> >> >
> >> > --
> >> > "Failure has a thousand explanations. Success doesn't need one" -- Sir
> >> > Alec Guiness
> >> >
> >>
> >>
> >
> >
> > --
> > "Failure has a thousand explanations. Success doesn't need one" -- Sir
> > Alec Guiness
> >
>
>


-- 
"Failure has a thousand explanations. Success doesn't need one" -- Sir
Alec Guiness