> On 25 Nov 2022, at 10:04 AM, 袁煕 <[email protected]> wrote:
>
> Dear PETSc developers,
>
> I have my own linear solver and am trying to put it with PETSc as an external
> solver. I wish to know following details
>
> 1. How to let PETSc configure to download (from github) the source code and
> compile, install it afterwards.
You can borrow code from one of the many files in
config/BuildSystem/config/packages/*.py
Put your file in there and then use --download-name-of-your-file when
configuring PETSc.
> 2. How to let PETSc call the solver. I think it may be accomplished by
> calling PCFactorSetMatSolverPackage. Is this correct?
You can borrow code from one
src/mat/impls/aij/seq/{mkl_pardiso,umfpack,superlu} or
src/mat/impls/aij/mpi/mumps to name a few.
Thanks,
Pierre
> Many thanks,
>
> Yuan
