[petsc-users] Question for Petsc

[Matthew Knepley]

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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