[petsc-users] PETSc MUMPS interface

[Varun Hiremath]

Hi All,

I want to collect MUMPS memory estimates based on the initial
symbolic factorization analysis before the actual numerical factorization
starts to check if the estimated memory requirements fit the available
memory.

I am following the steps from
https://petsc.org/main/src/ksp/ksp/tutorials/ex52.c.html

  PCFactorSetMatSolverType(pc,MATSOLVERMUMPS);
  PCFactorSetUpMatSolverType(pc);
  PCFactorGetMatrix(pc,&F);

  KSPSetUp(ksp);
  MatMumpsGetInfog(F,...)

But it appears KSPSetUp calls both symbolic and numerical factorization. So
is there some other way to get these statistics before the actual
factorization starts?

Thanks,
Varun