Running cg with none preconditioning
  0 KSP Residual norm 1.41421 
  1 KSP Residual norm 0.707107 
  2 KSP Residual norm 0.471405 
  3 KSP Residual norm 0.353553 
  4 KSP Residual norm 0.282843 
  5 KSP Residual norm < 1.e-11
