Residual norms for cs_ solve. 0 KSP none resid norm 1.254940857906e+01 true resid norm 6.348257807283e-15 ||r(i)||/||b|| 5.058611142740e-16 1 KSP none resid norm 6.348257807283e-15 true resid norm 6.348257807283e-15 ||r(i)||/||b|| 5.058611142740e-16 Linear cs_ solve converged due to CONVERGED_ITS iterations 1 KSP Object: (cs_) 108 MPI processes type: preonly maximum iterations=10000, initial guess is zero tolerances: relative=1e-05, absolute=1e-50, divergence=10000. left preconditioning using NONE norm type for convergence test PC Object: (cs_) 108 MPI processes type: lu out-of-place factorization tolerance for zero pivot 2.22045e-14 matrix ordering: external factor fill ratio given 0., needed 0. Factored matrix follows: Mat Object: 108 MPI processes type: superlu_dist rows=5351238, cols=5351238 package used to perform factorization: superlu_dist total: nonzeros=0, allocated nonzeros=0 SuperLU_DIST run parameters: Process grid nprow 9 x npcol 12 Equilibrate matrix TRUE Replace tiny pivots FALSE Use iterative refinement FALSE Processors in row 9 col partition 12 Row permutation LargeDiag_MC64 Column permutation METIS_AT_PLUS_A Parallel symbolic factorization FALSE Repeated factorization SamePattern linear system matrix = precond matrix: Mat Object: (cs_) 108 MPI processes type: mpiaij rows=5351238, cols=5351238 total: nonzeros=74533580, allocated nonzeros=149067160 total number of mallocs used during MatSetValues calls=0 not using I-node (on process 0) routines