Initializing AMReX (26.04-115-gb5e000952a01)...
Initializing CUDA...
CUDA initialized with 1 device.
AMReX (26.04-115-gb5e000952a01) initialized

Starting run at 09:13:31 UTC on 2026-04-30.
Successfully read inputs file ... 

Castro git describe: 26.04-6-g9e0439ba0
AMReX git describe: 26.04-115-gb5e000952
Microphysics git describe: 26.04-5-gb2bdcf8a

reading extern runtime parameters ...
13 Species: 
He4  C12  O16  Ne20  Mg24  Si28  S32  Ar36  Ca40  Ti44  Cr48  Fe52  Ni56  
Successfully read inputs file ... 
Creating primary with CO core with mass fractions C = 0.4and O = 0.6 and a He shell of solar mass =0.
Creating secondary with CO core with mass fractions C = 0.4and O = 0.6 and a He shell of solar mass =0.

Generated initial model for primary WD of mass 0.9 solar masses, central density 1.574e+07 g cm**-3, and radius 6.747e+08 cm.

Generated initial model for secondary WD of mass 0.9 solar masses, central density 1.574e+07 g cm**-3, and radius 6.747e+08 cm.

Generated binary orbit of distance 1.781e+09 cm = 1.190e-04 AU.
The primary orbits the center of mass at distance -8.903e+08 cm = -5.951e-05 AU.
The secondary orbits the center of mass at distance 8.903e+08 cm = 5.951e-05 AU.
The initial orbital period is 30.543687 s.
The initial orbital speed of the primary is -1.831e+08 cm/s.
The initial orbital speed of the secondary is 1.831e+08 cm/s.

Castro::numpts_1d at level  0 is 174
Setting the gravity type to PoissonGrav
Initializing the data at level 0
Done initializing the level 0 data 
...estimated hydro-limited timestep at level 0: 0.05426072637
...hydro-limited CFL timestep constrained at (i,j,k) = (29,63,95)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.05426072637

grid_places() time: 0.003412825 new finest: 0
Now regridding at level lbase = 0
grid_places() time: 0.001690494 new finest: 0
STEP = 0 TIME = 0 : REGRID  with lbase = 0

Gravity::fill_multipole_BCs() time = 0.008736744

Gravity::multilevel_solve_for_new_phi() time = 0.040589342

INITIAL GRIDS 
  Level 0   27 grids  884736 cells  100 % of domain
            smallest grid: 32 x 32 x 32  biggest grid: 32 x 32 x 32

PLOTFILE: file = wdmerger_3D_plt00000
Write plotfile time = 0.144522191  seconds

...estimated hydro-limited timestep at level 0: 0.05426072637
...hydro-limited CFL timestep constrained at (i,j,k) = (29,63,95)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.05426072637

[Level 0 step 1] ADVANCE at time 0 with dt = 0.005426072637

  Beginning subcycle 1 starting at time 0 with dt = 0.005426072637
  Estimated number of subcycles remaining: 1

Castro::construct_old_gravity() time = 0.00327698 on level 0

Castro::do_old_sources() time = 0.003714604 on level 0

Castro::do_old_sources() time = 0.0072433 on level 0

... Entering construct_ctu_hydro_source() on level 0

... Leaving construct_ctu_hydro_source() on level 0

Castro::construct_ctu_hydro_source() time = 0.112583003 on level 0


... new-time composite Poisson gravity solve from level 0 to level 0

Gravity::fill_multipole_BCs() time = 0.006603404

Gravity::multilevel_solve_for_new_phi() time = 0.030520408

Castro::construct_new_gravity() time = 0.033983805 on level 0

Castro::do_new_sources() time = 0.006064078 on level 0

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond at this level: 4.652962767

[Level 0 step 1] Advanced 884736 cells

  Updating the rotational period from 30.54368673 s to 30.46017574 s.


[STEP 1] Coarse TimeStep time: 0.19662652
[STEP 1] FAB kilobyte spread across MPI nodes: [1776890 ... 1776890]


STEP = 1 TIME = 0.005426072637 DT = 0.005426072637

...estimated hydro-limited timestep at level 0: 0.05461684804
...hydro-limited CFL timestep constrained at (i,j,k) = (0,29,94)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.05461684804

Castro::compute_new_dt : limiting dt at level 0
 ... new dt computed: 0.05461684804
 ... but limiting to: 0.0059686799 = 1.1 * 0.005426072637
Now regridding at level lbase = 0
grid_places() time: 0.002428364 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.006885354

Gravity::multilevel_solve_for_new_phi() time = 0.043210419

STEP = 1 TIME = 0.005426072637 : REGRID  with lbase = 0
  Level 1   2 grids  65536 cells  0.9259259259 % of domain
            smallest grid: 32 x 32 x 32  biggest grid: 32 x 32 x 32

...estimated hydro-limited timestep at level 0: 0.05461684804
...hydro-limited CFL timestep constrained at (i,j,k) = (0,29,94)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.05461684804

...estimated hydro-limited timestep at level 1: 2.526135647e-09
...hydro-limited CFL timestep constrained at (i,j,k) = (104,88,99)
Castro::estTimeStep (hydro-limited) at level 1:  estdt = 2.526135647e-09

[Level 0 step 2] ADVANCE at time 0.005426072637 with dt = 2.526135647e-09

  Beginning subcycle 1 starting at time 0.005426072637 with dt = 2.526135647e-09
  Estimated number of subcycles remaining: 1

Castro::construct_old_gravity() time = 0.00319456 on level 0

Castro::do_old_sources() time = 0.002895029 on level 0

Castro::do_old_sources() time = 0.005396888 on level 0

... Entering construct_ctu_hydro_source() on level 0

... Leaving construct_ctu_hydro_source() on level 0

Castro::construct_ctu_hydro_source() time = 0.118978166 on level 0

Castro::construct_old_gravity() time = 0.000413874 on level 1

Castro::do_old_sources() time = 0.000743743 on level 1

Castro::do_old_sources() time = 0.001633855 on level 1

... Entering construct_ctu_hydro_source() on level 1

... Leaving construct_ctu_hydro_source() on level 1

Castro::construct_ctu_hydro_source() time = 0.013575064 on level 1

Castro::reflux() at level 0 : time = 0.017592641

... new-time composite Poisson gravity solve from level 0 to level 1

Gravity::fill_multipole_BCs() time = 0.006524535

Gravity::multilevel_solve_for_new_phi() time = 0.030705831

Castro::construct_new_gravity() time = 0.034216596 on level 0

Castro::do_new_sources() time = 0.004981769 on level 0

Castro::construct_new_gravity() time = 0.000439467 on level 1

Castro::do_new_sources() time = 0.00187009 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 4.09489999

[Level 0 step 2] Advanced 884736 cells
[Level 1 step 2] ADVANCE at time 0.005426072637 with dt = 2.526135647e-09

  Advance at this level has already been completed.

[Level 1 step 2] Advanced 65536 cells

  Updating the rotational period from 30.46017574 s to 30.52759479 s.


[STEP 2] Coarse TimeStep time: 0.293711044
[STEP 2] FAB kilobyte spread across MPI nodes: [2384284 ... 2384284]


STEP = 2 TIME = 0.005426075163 DT = 2.526135647e-09

...estimated hydro-limited timestep at level 0: 0.0008044208529
...hydro-limited CFL timestep constrained at (i,j,k) = (37,49,42)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.0008044208529

...estimated hydro-limited timestep at level 1: 6.697001619e-07
...hydro-limited CFL timestep constrained at (i,j,k) = (121,90,90)
Castro::estTimeStep (hydro-limited) at level 1:  estdt = 6.697001619e-07

Castro::compute_new_dt : limiting dt at level 0
 ... new dt computed: 0.0008044208529
 ... but limiting to: 2.778749212e-09 = 1.1 * 2.526135647e-09
Castro::compute_new_dt : limiting dt at level 1
 ... new dt computed: 6.697001619e-07
 ... but limiting to: 2.778749212e-09 = 1.1 * 2.526135647e-09
Now regridding at level lbase = 0
grid_places() time: 0.002269418 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.006658198

Gravity::multilevel_solve_for_new_phi() time = 0.014004075

STEP = 2 TIME = 0.005426075163 : REGRID  with lbase = 0
  Level 1   2 grids  65536 cells  0.9259259259 % of domain
            smallest grid: 32 x 32 x 32  biggest grid: 32 x 32 x 32

...estimated hydro-limited timestep at level 0: 0.0008044208529
...hydro-limited CFL timestep constrained at (i,j,k) = (37,49,42)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.0008044208529

...estimated hydro-limited timestep at level 1: 6.697001619e-07
...hydro-limited CFL timestep constrained at (i,j,k) = (121,90,90)
Castro::estTimeStep (hydro-limited) at level 1:  estdt = 6.697001619e-07

[Level 0 step 3] ADVANCE at time 0.005426075163 with dt = 2.778749212e-09

  Beginning subcycle 1 starting at time 0.005426075163 with dt = 2.778749212e-09
  Estimated number of subcycles remaining: 1

Castro::construct_old_gravity() time = 0.003222494 on level 0

Castro::do_old_sources() time = 0.00305291 on level 0

Castro::do_old_sources() time = 0.005339186 on level 0

... Entering construct_ctu_hydro_source() on level 0

... Leaving construct_ctu_hydro_source() on level 0

Castro::construct_ctu_hydro_source() time = 0.112970023 on level 0

Castro::construct_old_gravity() time = 0.000380769 on level 1

Castro::do_old_sources() time = 0.000747086 on level 1

Castro::do_old_sources() time = 0.001305266 on level 1

... Entering construct_ctu_hydro_source() on level 1

... Leaving construct_ctu_hydro_source() on level 1

Castro::construct_ctu_hydro_source() time = 0.01086859 on level 1

Castro::reflux() at level 0 : time = 0.016869617

... new-time composite Poisson gravity solve from level 0 to level 1

Gravity::fill_multipole_BCs() time = 0.006512534

Gravity::multilevel_solve_for_new_phi() time = 0.022779524

Castro::construct_new_gravity() time = 0.026126869 on level 0

Castro::do_new_sources() time = 0.004843303 on level 0

Castro::construct_new_gravity() time = 0.000421926 on level 1

Castro::do_new_sources() time = 0.001370534 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 4.423636895

[Level 0 step 3] Advanced 884736 cells
[Level 1 step 3] ADVANCE at time 0.005426075163 with dt = 2.778749212e-09

  Advance at this level has already been completed.

[Level 1 step 3] Advanced 65536 cells

  Updating the rotational period from 30.52759479 s to 30.52761298 s.


[STEP 3] Coarse TimeStep time: 0.246052908
[STEP 3] FAB kilobyte spread across MPI nodes: [2384284 ... 2384284]


STEP = 3 TIME = 0.005426077942 DT = 2.778749212e-09

...estimated hydro-limited timestep at level 0: 0.000804308035
...hydro-limited CFL timestep constrained at (i,j,k) = (37,49,42)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.000804308035

...estimated hydro-limited timestep at level 1: 6.965184638e-07
...hydro-limited CFL timestep constrained at (i,j,k) = (121,90,90)
Castro::estTimeStep (hydro-limited) at level 1:  estdt = 6.965184638e-07

Castro::compute_new_dt : limiting dt at level 0
 ... new dt computed: 0.000804308035
 ... but limiting to: 3.056624133e-09 = 1.1 * 2.778749212e-09
Castro::compute_new_dt : limiting dt at level 1
 ... new dt computed: 6.965184638e-07
 ... but limiting to: 3.056624133e-09 = 1.1 * 2.778749212e-09
Now regridding at level lbase = 0
grid_places() time: 0.002229447 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.006586702

Gravity::multilevel_solve_for_new_phi() time = 0.01405018

STEP = 3 TIME = 0.005426077942 : REGRID  with lbase = 0
  Level 1   2 grids  65536 cells  0.9259259259 % of domain
            smallest grid: 32 x 32 x 32  biggest grid: 32 x 32 x 32

...estimated hydro-limited timestep at level 0: 0.000804308035
...hydro-limited CFL timestep constrained at (i,j,k) = (37,49,42)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.000804308035

...estimated hydro-limited timestep at level 1: 6.965184638e-07
...hydro-limited CFL timestep constrained at (i,j,k) = (121,90,90)
Castro::estTimeStep (hydro-limited) at level 1:  estdt = 6.965184638e-07

[Level 0 step 4] ADVANCE at time 0.005426077942 with dt = 3.056624133e-09

  Beginning subcycle 1 starting at time 0.005426077942 with dt = 3.056624133e-09
  Estimated number of subcycles remaining: 1

Castro::construct_old_gravity() time = 0.003205036 on level 0

Castro::do_old_sources() time = 0.002903921 on level 0

Castro::do_old_sources() time = 0.005360825 on level 0

... Entering construct_ctu_hydro_source() on level 0

... Leaving construct_ctu_hydro_source() on level 0

Castro::construct_ctu_hydro_source() time = 0.132405752 on level 0

Castro::construct_old_gravity() time = 0.000372174 on level 1

Castro::do_old_sources() time = 0.000703298 on level 1

Castro::do_old_sources() time = 0.001434373 on level 1

... Entering construct_ctu_hydro_source() on level 1

... Leaving construct_ctu_hydro_source() on level 1

Castro::construct_ctu_hydro_source() time = 0.013215833 on level 1

Castro::reflux() at level 0 : time = 0.018181486

... new-time composite Poisson gravity solve from level 0 to level 1

Gravity::fill_multipole_BCs() time = 0.006529455

Gravity::multilevel_solve_for_new_phi() time = 0.022881889

Castro::construct_new_gravity() time = 0.026192739 on level 0

Castro::do_new_sources() time = 0.007210287 on level 0

Castro::construct_new_gravity() time = 0.000414554 on level 1

Castro::do_new_sources() time = 0.001395925 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 3.936223333

[Level 0 step 4] Advanced 884736 cells
[Level 1 step 4] ADVANCE at time 0.005426077942 with dt = 3.056624133e-09

  Advance at this level has already been completed.

[Level 1 step 4] Advanced 65536 cells

  Updating the rotational period from 30.52761298 s to 30.52761297 s.


[STEP 4] Coarse TimeStep time: 0.274837876
[STEP 4] FAB kilobyte spread across MPI nodes: [2384284 ... 2384284]


STEP = 4 TIME = 0.005426080998 DT = 3.056624133e-09

...estimated hydro-limited timestep at level 0: 0.0002497928903
...hydro-limited CFL timestep constrained at (i,j,k) = (57,41,46)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.0002497928903

...estimated hydro-limited timestep at level 1: 7.255166705e-07
...hydro-limited CFL timestep constrained at (i,j,k) = (121,90,90)
Castro::estTimeStep (hydro-limited) at level 1:  estdt = 7.255166705e-07

Castro::compute_new_dt : limiting dt at level 0
 ... new dt computed: 0.0002497928903
 ... but limiting to: 3.362286546e-09 = 1.1 * 3.056624133e-09
Castro::compute_new_dt : limiting dt at level 1
 ... new dt computed: 7.255166705e-07
 ... but limiting to: 3.362286546e-09 = 1.1 * 3.056624133e-09
Now regridding at level lbase = 0
grid_places() time: 0.002128096 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.00665871

Gravity::multilevel_solve_for_new_phi() time = 0.014072106

STEP = 4 TIME = 0.005426080998 : REGRID  with lbase = 0
  Level 1   2 grids  65536 cells  0.9259259259 % of domain
            smallest grid: 32 x 32 x 32  biggest grid: 32 x 32 x 32

...estimated hydro-limited timestep at level 0: 0.0002497928903
...hydro-limited CFL timestep constrained at (i,j,k) = (57,41,46)
Castro::estTimeStep (hydro-limited) at level 0:  estdt = 0.0002497928903

...estimated hydro-limited timestep at level 1: 7.255166705e-07
...hydro-limited CFL timestep constrained at (i,j,k) = (121,90,90)
Castro::estTimeStep (hydro-limited) at level 1:  estdt = 7.255166705e-07

[Level 0 step 5] ADVANCE at time 0.005426080998 with dt = 3.362286546e-09

  Beginning subcycle 1 starting at time 0.005426080998 with dt = 3.362286546e-09
  Estimated number of subcycles remaining: 1

Castro::construct_old_gravity() time = 0.003316821 on level 0

Castro::do_old_sources() time = 0.00316536 on level 0

Castro::do_old_sources() time = 0.007883264 on level 0

... Entering construct_ctu_hydro_source() on level 0

... Leaving construct_ctu_hydro_source() on level 0

Castro::construct_ctu_hydro_source() time = 0.122316708 on level 0

Castro::construct_old_gravity() time = 0.000352721 on level 1

Castro::do_old_sources() time = 0.000948575 on level 1

Castro::do_old_sources() time = 0.001339783 on level 1

... Entering construct_ctu_hydro_source() on level 1

... Leaving construct_ctu_hydro_source() on level 1

Castro::construct_ctu_hydro_source() time = 0.013132721 on level 1

Castro::reflux() at level 0 : time = 0.01683919

... new-time composite Poisson gravity solve from level 0 to level 1

Gravity::fill_multipole_BCs() time = 0.00644963

Gravity::multilevel_solve_for_new_phi() time = 0.022874077

Castro::construct_new_gravity() time = 0.026172386 on level 0

Castro::do_new_sources() time = 0.008060167 on level 0

Castro::construct_new_gravity() time = 0.000415047 on level 1

Castro::do_new_sources() time = 0.001374204 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 3.937067851

[Level 0 step 5] Advanced 884736 cells
[Level 1 step 5] ADVANCE at time 0.005426080998 with dt = 3.362286546e-09

  Advance at this level has already been completed.

[Level 1 step 5] Advanced 65536 cells

  Updating the rotational period from 30.52761297 s to 30.52761296 s.


[STEP 5] Coarse TimeStep time: 0.27629576
[STEP 5] FAB kilobyte spread across MPI nodes: [2384284 ... 2384284]


STEP = 5 TIME = 0.005426084361 DT = 3.362286546e-09

PLOTFILE: file = wdmerger_3D_plt00005
Write plotfile time = 0.154852132  seconds


Ending run at 09:13:34 UTC on 2026-04-30.
Run time = 2.866083605
Run time without initialization = 1.443032306

  Average number of zones advanced per microsecond: 3.429
  Average number of zones advanced per microsecond per rank: 3.429

CPU(0): Heap Space (bytes) used by Coalescing FAB Arena: 9476456448
Unused ParmParse Variables:
  [TOP]::mg.v(nvals = 1)  :: [2]

Total GPU global memory (MB): 12049
Free  GPU global memory (MB): 2538
[The         Arena] max space allocated (MB): 9037
[The         Arena] max space used      (MB): 3259
[The Managed Arena] max space allocated (MB): 8
[The Managed Arena] max space used      (MB): 0
[The  Pinned Arena] max space allocated (MB): 8
[The  Pinned Arena] max space used      (MB): 6
AMReX (26.04-115-gb5e000952a01) finalized