What prehistoric version of PETSc are you using?
Barry On Oct 27, 2009, at 6:19 PM, Lukasz Kaczmarczyk wrote: > Hello, > > I have noticed minor problem, potentially bug. For nonlinear > analysis with SNES and option -ksp_monitor_true_residual I get > 0 Norm Res_strain 9.36e-12 Norm Res_stress 1.43e-05 Internal its 1 > 0 SNES Function norm 1.428489691212e-05 > 0 KSP preconditioned resid norm 7.213823259362e-04 true resid > norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00 > 0 KSP preconditioned resid norm 7.213823259362e-04 true resid > norm 1.428489691212e-05 ||Ae||/||Ax|| 1.000000000000e+00 > 1 KSP preconditioned resid norm 4.903423697449e-04 true resid > norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01 > 1 KSP preconditioned resid norm 4.903423697449e-04 true resid > norm 9.339595309685e-06 ||Ae||/||Ax|| 6.538090801174e-01 > > It look that function KSPMonitorTrueResidualNorm is evaluated twice, > whereas for default KSP monitor only once. I use petsc-3.0.0-p7. > > Kind regards, > Lukasz
