[petsc-users] Example of PCShell

[Zhang, Yifan]

Dear Petsc users,


I am trying to preconditioning spectral method with 2nd order finite
difference.

So just writing to ask if anyone got a good Petsc examples of
using PCShell in fortran other than ex15.F .

Thanks very much.

Best,

-- 
Yifan Zhang
Division of Applied Mathematics
Brown University, Providence, RI02912
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