2D phi4 L=128 observables, kappa=0.28

HMC raw: N_raw=10240 N_used=10240 N_effective=10240 z2=False
   abs_phi_bar: 1.4557651 +/- 1.635476e-04
           chi: 4.219144 +/- 0.063540727
      S_over_V: 0.23817433 +/- 6.102704e-05
            U4: 0.66650481 +/- 2.435787e-06
        kappa2: 2.119506 +/- 5.422655e-04
        kappa4: -8.9823868 +/- 0.0059725745
        kappa6: 152.28599 +/- 0.1888213
        kappa8: -5486.3739 +/- 10.963048
    abs_phi_ps: 1.4829106 +/- 1.329383e-04
   kappa2_s_ps: 2.6898041 +/- 3.844024e-04
   kappa4_s_ps: -9.8001789 +/- 0.0037312039
   kappa6_s_ps: 171.02862 +/- 0.1033637
   kappa8_s_ps: -6394.8353 +/- 5.4134517
       U4_s_ps: 0.45145903 +/- 4.517659e-05

HMC Z2: N_raw=10240 N_used=10240 N_effective=20480 z2=True
   abs_phi_bar: 1.4557651 +/- 1.645079e-04
           chi: 4.219144 +/- 0.061510181
      S_over_V: 0.23817433 +/- 6.209192e-05
            U4: 0.66650481 +/- 2.354539e-06
        kappa2: 2.1195097 +/- 4.788832e-04
        kappa4: -8.9824612 +/- 0.0040602484
        kappa6: 152.28881 +/- 0.10325728
        kappa8: -5486.553 +/- 4.9601484
    abs_phi_ps: 1.4829106 +/- 1.329383e-04
   kappa2_s_ps: 2.6898632 +/- 3.751623e-04
   kappa4_s_ps: -9.8004892 +/- 0.0035669663
   kappa6_s_ps: 171.04727 +/- 0.09521843
   kappa8_s_ps: -6396.1871 +/- 4.7842482
       U4_s_ps: 0.45145903 +/- 4.517659e-05

DM multi-L Z2: N_raw=2048 N_used=2048 N_effective=4096 z2=True
   abs_phi_bar: 1.45418 +/- 3.806064e-04
           chi: 4.9783062 +/- 0.14806374
      S_over_V: 0.24013733 +/- 1.518291e-04
            U4: 0.66647523 +/- 5.705072e-06
        kappa2: 2.1149433 +/- 0.0011065216
        kappa4: -8.9434014 +/- 0.0093629109
        kappa6: 151.29656 +/- 0.23758573
        kappa8: -5438.9408 +/- 11.387719
    abs_phi_ps: 1.4817063 +/- 2.230086e-04
   kappa2_s_ps: 2.6882842 +/- 6.577648e-04
   kappa4_s_ps: -9.7707463 +/- 0.0061557436
   kappa6_s_ps: 170.35095 +/- 0.16829202
   kappa8_s_ps: -6366.2668 +/- 8.8097227
       U4_s_ps: 0.4504261 +/- 9.137815e-05

HMC Z2 comparison against prompt reference:
  PASS means the center value is consistent with the prompt reference.
  WARN means this run did not strictly reproduce that table entry.
  PASS  abs_phi_bar: got 1.4557651 +/- 1.645079e-04 | ref 1.4548 +/- 4.000000e-04 | diff=9.651460e-04 | z=+2.23
  PASS          chi: got 4.219144 +/- 0.061510181 | ref 4.3 +/- 0.14 | diff=-0.080855966 | z=-0.53
  PASS     S_over_V: got 0.23817433 +/- 6.209192e-05 | ref 0.2383 +/- 1.000000e-04 | diff=-1.256658e-04 | z=-1.07
  WARN           U4: got 0.66650481 +/- 2.354539e-06 | ref 0.66647 +/- 6.000000e-06 | diff=3.480636e-05 | z=+5.40
  PASS       kappa4: got -8.9824612 +/- 0.0040602484 | ref -8.971 +/- 0.009 | diff=-0.011461152 | z=-1.16
  PASS       kappa6: got 152.28881 +/- 0.10325728 | ref 152 +/- 0.2 | diff=0.28880895 | z=+1.28
  PASS       kappa8: got -5486.553 +/- 4.9601484 | ref -5473 +/- 11 | diff=-13.553002 | z=-1.12
  PASS  kappa2_s_ps: got 2.6898632 +/- 3.751623e-04 | ref 2.689 | diff=8.631985e-04 | rel=+0.032%
  PASS  kappa4_s_ps: got -9.8004892 +/- 0.0035669663 | ref -9.796 | diff=-0.0044892332 | rel=+0.046%
  PASS  kappa6_s_ps: got 171.04727 +/- 0.09521843 | ref 171 | diff=0.047269584 | rel=+0.028%
  PASS  kappa8_s_ps: got -6396.1871 +/- 4.7842482 | ref -6400 | diff=3.8128994 | rel=-0.060%
  PASS      U4_s_ps: got 0.45145903 +/- 4.517659e-05 | ref 0.4514 | diff=5.902692e-05 | rel=+0.013%
