[petsc-users] MatCreateShell with VecCreateGhost

[Bikash Kanungo]

Hi,

I want to implement a matrix-free KSP solve using user-defined MATOP_MULT
and MATOP_MULT_TRANSPOSE. Each of these user-defined functions take in  Mat
A, Vec x and Vec y as arguments and store A*x in y. To perform A*x in the
user defined fashion, each processor requires access to some non-local
nodes of x. So, is there a way I can create these two vectors (x and y)
using VecCreateGhost?

Thanks,
Bikash

-- 
Bikash S. Kanungo
PhD Student
Computational Materials Physics Group
Mechanical Engineering
University of Michigan
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