1=========================================== 2Test: KSP performance - Poisson 3 Input matrix: 27-pt finite difference stencil 4 -n 8 5 DoFs = 512 6 Number of nonzeros = 10648 7 8Step1 - creating Vecs and Mat... 9Step2 - running KSPSolve()... 10Step3 - calculating error norm... 11=========================================== 12