Initializing AMReX (26.09-42-gab27bcd92650)...
Initializing CUDA...
CUDA initialized with 1 device.
AMReX (26.09-42-gab27bcd92650) initialized

Starting run at 09:27:49 UTC on 2026-09-11.
Successfully read inputs file ... 

Castro git describe: 26.09
AMReX git describe: 26.09-42-gab27bcd92
Microphysics git describe: 26.09-9-g596ae8f9

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: 0.003023415 new finest: 0
Now regridding at level lbase = 0
grid_places() time: 0.001825706 new finest: 0
STEP = 0 TIME = 0 : REGRID  with lbase = 0

Gravity::fill_multipole_BCs() time = 0.008557242

Gravity::multilevel_solve_for_new_phi() time = 0.039571362

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 = 0.101304883  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 = 0.003201449 on level 0

Castro::do_old_sources() time = 0.003605992 on level 0

Castro::do_old_sources() time = 0.007001583 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 = 0.077958085 on level 0


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

Gravity::fill_multipole_BCs() time = 0.006298457

Gravity::multilevel_solve_for_new_phi() time = 0.0295993

Castro::construct_new_gravity() time = 0.032857041 on level 0

Castro::do_new_sources() time = 0.006151827 on level 0

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond at this level: 5.71754215

[Level 0 step 1] Advanced 884736 cells

  Updating the rotational period from 30.54368673 s to 30.46017574 s.


[STEP 1] Coarse TimeStep time: 0.163228116
[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: 0.0021114 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.007051396

Gravity::multilevel_solve_for_new_phi() time = 0.042614951

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 = 0.003041562 on level 0

Castro::do_old_sources() time = 0.003280229 on level 0

Castro::do_old_sources() time = 0.005779188 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 = 0.097603385 on level 0

Castro::construct_old_gravity() time = 0.000329369 on level 1

Castro::do_old_sources() time = 0.000879004 on level 1

Castro::do_old_sources() time = 0.001098274 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 = 0.010504415 on level 1

Castro::reflux() at level 0 : time = 0.016932053

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

Gravity::fill_multipole_BCs() time = 0.006626614

Gravity::multilevel_solve_for_new_phi() time = 0.030216432

Castro::construct_new_gravity() time = 0.033440011 on level 0

Castro::do_new_sources() time = 0.007128182 on level 0

Castro::construct_new_gravity() time = 0.000341081 on level 1

Castro::do_new_sources() time = 0.001623166 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 4.344176175

[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: 0.284728619
[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: 0.002085867 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.006716139

Gravity::multilevel_solve_for_new_phi() time = 0.013740525

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 = 0.003183081 on level 0

Castro::do_old_sources() time = 0.00319729 on level 0

Castro::do_old_sources() time = 0.005345906 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 = 0.137268063 on level 0

Castro::construct_old_gravity() time = 0.0003056 on level 1

Castro::do_old_sources() time = 0.000871981 on level 1

Castro::do_old_sources() time = 0.001205936 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 = 0.011228819 on level 1

Castro::reflux() at level 0 : time = 0.016853371

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

Gravity::fill_multipole_BCs() time = 0.006618514

Gravity::multilevel_solve_for_new_phi() time = 0.022421402

Castro::construct_new_gravity() time = 0.025652286 on level 0

Castro::do_new_sources() time = 0.004958763 on level 0

Castro::construct_new_gravity() time = 0.000357641 on level 1

Castro::do_new_sources() time = 0.001910188 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 3.839060687

[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: 0.28717002
[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: 0.002075862 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.00672241

Gravity::multilevel_solve_for_new_phi() time = 0.013842192

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 = 0.003122119 on level 0

Castro::do_old_sources() time = 0.003031678 on level 0

Castro::do_old_sources() time = 0.005259867 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 = 0.119571181 on level 0

Castro::construct_old_gravity() time = 0.000310606 on level 1

Castro::do_old_sources() time = 0.000836307 on level 1

Castro::do_old_sources() time = 0.001126796 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 = 0.011760969 on level 1

Castro::reflux() at level 0 : time = 0.019265567

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

Gravity::fill_multipole_BCs() time = 0.006583964

Gravity::multilevel_solve_for_new_phi() time = 0.022431224

Castro::construct_new_gravity() time = 0.025721071 on level 0

Castro::do_new_sources() time = 0.008782547 on level 0

Castro::construct_new_gravity() time = 0.000372674 on level 1

Castro::do_new_sources() time = 0.001421486 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 4.137513816

[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: 0.268036137
[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: 0.003045904 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.00672865

Gravity::multilevel_solve_for_new_phi() time = 0.013890809

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 = 0.003084263 on level 0

Castro::do_old_sources() time = 0.003137155 on level 0

Castro::do_old_sources() time = 0.005225412 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 = 0.119342693 on level 0

Castro::construct_old_gravity() time = 0.000316503 on level 1

Castro::do_old_sources() time = 0.000920744 on level 1

Castro::do_old_sources() time = 0.001670157 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 = 0.010643613 on level 1

Castro::reflux() at level 0 : time = 0.015661129

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

Gravity::fill_multipole_BCs() time = 0.006701755

Gravity::multilevel_solve_for_new_phi() time = 0.0227105

Castro::construct_new_gravity() time = 0.026034757 on level 0

Castro::do_new_sources() time = 0.00530031 on level 0

Castro::construct_new_gravity() time = 0.000344448 on level 1

Castro::do_new_sources() time = 0.001268003 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 4.211692824

[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: 0.271219999
[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 = 0.105253143  seconds


Ending run at 09:27:52 UTC on 2026-09-11.
Run time = 2.740908704
Run time without initialization = 1.380433684

  Average number of zones advanced per microsecond: 3.584
  Average number of zones advanced per microsecond per rank: 3.584

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): 2535
[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 (26.09-42-gab27bcd92650) finalized