[petsc-users] petsc __float128 krylov solver with mixed precision LU preconditioner

[Gong Ding]

Dear All,

I had a question. For petsc configured with 128bit float, Is it possible 
to use 64bit direct solver as mixed precision preconditioner for krylov 
subspace iterative method?

If so , such as MUMPS or Pardiso can be used as efficient parallel LU 
preconditioner I think.

Regards

Gong Ding

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