[petsc-users] Question for Petsc

[Stefano Zampini]

For bddc, you can also take a look at
https://gitlab.com/petsc/petsc/-/blob/main/src/ksp/ksp/tutorials/ex71.c

On Thu, Feb 16, 2023, 19:41 Matthew Knepley <knepley at gmail.com> wrote:

> On Thu, Feb 16, 2023 at 9:14 AM ziming xiong <xiongziming2010 at gmail.com>
> wrote:
>
>> Hello，
>> I want to use Petsc to implement high performance computing, and I mainly
>> want to apply DDM methods to parallel computing. I have implemented some of
>> the DDM methods (such as ASM, Bjacobi, etc.), but I don't understand the
>> PCBDDC method. The official example (src/ksp/ksp/tutorials/ex59.c.html) is
>> too complicated, so I have not been able to figure out the setting process.
>> I would like to ask you if you have other simple and clearer examples for
>> reference.
>>
>
> You could look at the paper:
> https://epubs.siam.org/doi/abs/10.1137/15M1025785
>
>
>> Secondly, I would like to apply mklPardiso to Petsc. But not work, can u
>> help me figure out the problem? i use oneAPI for the mklpardiso, and when i
>> configure, i give the blaslapack lib.
>>
>
> You should reconfigure with --download-mkl_pardiso
>
>   Thanks,
>
>      Matt
>
>
>> there are the errors:
>>
>> [0]PETSC ERROR: See
>> https://petsc.org/release/overview/linear_solve_table/ for possible LU
>> and Cholesky solvers
>> [0]PETSC ERROR: Could not locate solver type mkl_pardiso for
>> factorization type LU and matrix type seqaij. Perhaps you must ./configure
>> with --download-mkl_pardiso
>> [0]PETSC ERROR: See https://petsc.org/release/faq/ for trouble shooting.
>> [0]PETSC ERROR: Petsc Release Version 3.18.3, Dec 28, 2022
>> [0]PETSC ERROR:
>> C:\Users\XiongZiming\Desktop\test_petsc_FEM\test_petsc_fem\x64\Release\test_petsc_fem.exe
>> on a arch-mswin-c-debug named lmeep-329 by XiongZiming Thu Feb 16 15:05:14
>> 2023
>> [0]PETSC ERROR: Configure options --with-cc="win32fe cl" --with-fc=0
>> --with-cxx="win32fe cl" --with-shared-libraries=0
>> --with-mpi-include="[/cygdrive/c/PROGRA~2/Intel/MPI/Include,/cygdrive/c/PROGRA~2/Intel/MPI/Include/x64]"
>> --with-mpi-lib="-L/cygdrive/c/PROGRA~2/Intel/MPI/lib/x64 msmpifec.lib
>> msmpi.lib" --with-mpiexec=/cygdrive/c/PROGRA~1/Microsoft_MPI/Bin/mpiexec
>> --with-blaslapack-lib="-L/cygdrive/c/PROGRA~2/Intel/oneAPI/mkl/2023.0.0/lib/intel64
>> mkl_intel_lp64_dll.lib mkl_sequential_dll.lib mkl_core_dll.lib"
>>
>> Thanks,
>> Ziming XIONG
>>
>
>
> --
> 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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