[petsc-users] Trying to run https://petsc.org/release/src/ksp/ksp/tutorials/ex72.c.html

[neil liu]

I compiled Petsc with single precision. However, it is not converged with
the data.

Please see the attached file.

On Mon, Jul 29, 2024 at 4:25 PM Barry Smith <bsmith at petsc.dev> wrote:

>
>    This can happen if the data was stored in single precision and PETSc
> was built for double.
>
>
> On Jul 29, 2024, at 3:55 PM, neil liu <liufield at gmail.com> wrote:
>
> This Message Is From an External Sender
> This message came from outside your organization.
> Dear Petsc developers,,
>
> I am trying to run
> https://urldefense.us/v3/__https://petsc.org/release/src/ksp/ksp/tutorials/ex72.c.html__;!!G_uCfscf7eWS!ddQAzGhXI9wgpzpsAee6djDx2KTUfGC3FtZ0R51gJeg777b3Wv8Q1A73PbZHMN2QREl0wUNh8KcquslAlSuF7Q$ 
> <https://urldefense.us/v3/__https://petsc.org/release/src/ksp/ksp/tutorials/ex72.c.html__;!!G_uCfscf7eWS!ZG4gvmS6hQD8ymbvCUDfAatzRUJHzmWO-hOgp9m0xXuAXgIB-fxe_xspYs3WEPi_Ed0UFLMHKanYuYWrTlQGrA$>
> with
>
> petsc-3.21.1/petsc/arch-linux-c-opt/bin/mpirun -n 2 ./ex72  -f
> /Documents/PetscData/poisson_DMPLEX_32x32_16.dat -pc_type bddc -ksp_type cg
> -ksp_norm_type natural -ksp_error_if_not_converged -mat_type is
>
> The file was downloaded and put in the directory PetscData.
>
> The error is shown as follows,
>
> 0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> [0]PETSC ERROR: Read from file failed
> [0]PETSC ERROR: Read past end of file
> [0]PETSC ERROR: WARNING! There are unused option(s) set! Could be the
> program crashed before usage or a spelling mistake, etc!
> [0]PETSC ERROR:   Option left: name:-ksp_error_if_not_converged (no value)
> source: command line
> [0]PETSC ERROR:   Option left: name:-ksp_norm_type value: natural source:
> command line
> [0]PETSC ERROR:   Option left: name:-ksp_type value: cg source: command
> line
> [0]PETSC ERROR:   Option left: name:-pc_type value: bddc source: command
> line
> [0]PETSC ERROR: See https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!ddQAzGhXI9wgpzpsAee6djDx2KTUfGC3FtZ0R51gJeg777b3Wv8Q1A73PbZHMN2QREl0wUNh8KcqusmvozIhKg$ 
> <https://urldefense.us/v3/__https://petsc.org/release/faq/__;!!G_uCfscf7eWS!ZG4gvmS6hQD8ymbvCUDfAatzRUJHzmWO-hOgp9m0xXuAXgIB-fxe_xspYs3WEPi_Ed0UFLMHKanYuYVR0x14Xg$>
>  for trouble shooting.
> [0]PETSC ERROR: Petsc Release Version 3.21.1, unknown
> [0]PETSC ERROR: ./ex72 on a arch-linux-c-opt named
>  Mon Jul 29 15:50:04 2024
> [0]PETSC ERROR: Configure options --with-cc=gcc --with-fc=gfortran
> --with-cxx=g++ --download-fblaslapack --download-mpich
> --with-scalar-type=complex --download-triangle --with-debugging=no
> [0]PETSC ERROR: #1 PetscBinaryRead() at
> /home/xxxxxx/Documents/petsc-3.21.1/petsc/src/sys/fileio/sysio.c:327
> [0]PETSC ERROR: #2 PetscViewerBinaryWriteReadAll() at
> /home/xiaodong.liu/Documents/petsc-3.21.1/petsc/src/sys/classes/viewer/impls/binary/binv.c:1077
> [0]PETSC ERROR: #3 PetscViewerBinaryReadAll() at
> /home/xiaodong.liu/Documents/petsc-3.21.1/petsc/src/sys/classes/viewer/impls/binary/binv.c:1119
> [0]PETSC ERROR: #4 MatLoad_MPIAIJ_Binary() at
> Documents/petsc-3.21.1/petsc/src/mat/impls/aij/mpi/mpiaij.c:3093
> [0]PETSC ERROR: #5 MatLoad_MPIAIJ() at
> /Documents/petsc-3.21.1/petsc/src/mat/impls/aij/mpi/mpiaij.c:3035
> [0]PETSC ERROR: #6 MatLoad() at
> /Documents/petsc-3.21.1/petsc/src/mat/interface/matrix.c:1344
> [0]PETSC ERROR: #7 MatLoad_IS() at
> /Documents/petsc-3.21.1/petsc/src/mat/impls/is/matis.c:2575
> [0]PETSC ERROR: #8 MatLoad() at
> /home/Documents/petsc-3.21.1/petsc/src/mat/interface/matrix.c:1344
> [0]PETSC ERROR: #9 main() at ex72.c:105
> [0]PETSC ERROR: PETSc Option Table entries:
> [0]PETSC ERROR: -f
> /Documents/PetscData/poisson_DMPLEX_32x32_16.dat (source: command line)
> [0]PETSC ERROR: -ksp_error_if_not_converged (source: command line)
> [0]PETSC ERROR: -ksp_norm_type natural (source: command line)
> [0]PETSC ERROR: -ksp_type cg (source: command line)
> [0]PETSC ERROR: -mat_type is (source: command line)
> [0]PETSC ERROR: -pc_type bddc (source: command line)
> [0]PETSC ERROR: ----------------End of Error Message -------send entire
> error message to petsc-maint at mcs.anl.gov----------
> application called MPI_Abort(MPI_COMM_SELF, 66) - process 0
>
>
>
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