Thu Sep 13 09:31:14 2018

VCYCLE_TEST:
  Python version: 3.6.5
  VCYCLE applies one V-cycle to a matrix.
step 0, rel error=1.937586e-01
step 1, rel error=3.762144e-02
step 2, rel error=7.417582e-03
step 3, rel error=1.552965e-03
step 4, rel error=3.782356e-04
step 5, rel error=1.126136e-04
step 6, rel error=3.808544e-05
step 7, rel error=1.346628e-05
step 8, rel error=4.808143e-06
step 9, rel error=1.717180e-06
step 10, rel error=6.123136e-07
step 11, rel error=2.180019e-07
step 12, rel error=7.751897e-08
step 13, rel error=2.753766e-08
step 14, rel error=9.774340e-09
step 15, rel error=3.466836e-09
step 16, rel error=1.228812e-09
step 17, rel error=4.352716e-10
step 18, rel error=1.540968e-10
step 19, rel error=5.454685e-11
step 20, rel error=1.932541e-11
step 21, rel error=6.869234e-12
VCYLE_TEST: Tolerance achieved.

VCYCLE_TEST:
  Normal end of execution.
Thu Sep 13 09:31:19 2018