Initializing AMReX (26.08-13-g52ff27ef5904)...
Initializing CUDA...
CUDA initialized with 1 device.
AMReX (26.08-13-g52ff27ef5904) initialized

Starting run at 07:58:17 UTC on 2026-08-11.
Successfully read inputs file ... 

Castro git describe: 26.08-1-gf0b335c8a
AMReX git describe: 26.08-13-g52ff27ef5
Microphysics git describe: 26.08-10-g21581f4b

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: 0.00311742 new finest: 0
Now regridding at level lbase = 0
grid_places() time: 0.001932487 new finest: 0
STEP = 0 TIME = 0 : REGRID  with lbase = 0

Gravity::fill_multipole_BCs() time = 0.008463394

Gravity::multilevel_solve_for_new_phi() time = 0.039268426

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 = 0.111813675  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 = 0.00486065 on level 0

Castro::do_old_sources() time = 0.00419676 on level 0

Castro::do_old_sources() time = 0.007735479 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 = 0.078224313 on level 0


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

Gravity::fill_multipole_BCs() time = 0.006732771

Gravity::multilevel_solve_for_new_phi() time = 0.030844283

Castro::construct_new_gravity() time = 0.035749065 on level 0

Castro::do_new_sources() time = 0.006411079 on level 0

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond at this level: 5.394451163

[Level 0 step 1] Advanced 884736 cells

  Updating the rotational period from 30.54368673 s to 30.46017574 s.


[STEP 1] Coarse TimeStep time: 0.172296866
[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: 0.002217776 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.007517487

Gravity::multilevel_solve_for_new_phi() time = 0.04327479

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 = 0.004920947 on level 0

Castro::do_old_sources() time = 0.003809596 on level 0

Castro::do_old_sources() time = 0.00575297 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 = 0.136928365 on level 0

Castro::construct_old_gravity() time = 0.000316591 on level 1

Castro::do_old_sources() time = 0.00084245 on level 1

Castro::do_old_sources() time = 0.001140084 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 = 0.012044414 on level 1

Castro::reflux() at level 0 : time = 0.019436418

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

Gravity::fill_multipole_BCs() time = 0.006662643

Gravity::multilevel_solve_for_new_phi() time = 0.030356995

Castro::construct_new_gravity() time = 0.035349447 on level 0

Castro::do_new_sources() time = 0.005148211 on level 0

Castro::construct_new_gravity() time = 0.000343924 on level 1

Castro::do_new_sources() time = 0.00180307 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 3.736042455

[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: 0.319218864
[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: 0.002164254 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.006681195

Gravity::multilevel_solve_for_new_phi() time = 0.013869584

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 = 0.004827209 on level 0

Castro::do_old_sources() time = 0.003868712 on level 0

Castro::do_old_sources() time = 0.005879477 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 = 0.07793751 on level 0

Castro::construct_old_gravity() time = 0.000312376 on level 1

Castro::do_old_sources() time = 0.000834978 on level 1

Castro::do_old_sources() time = 0.001124575 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 = 0.007423719 on level 1

Castro::reflux() at level 0 : time = 0.016118178

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

Gravity::fill_multipole_BCs() time = 0.006618244

Gravity::multilevel_solve_for_new_phi() time = 0.022506737

Castro::construct_new_gravity() time = 0.027164143 on level 0

Castro::do_new_sources() time = 0.006848763 on level 0

Castro::construct_new_gravity() time = 0.000351925 on level 1

Castro::do_new_sources() time = 0.001820015 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 5.23243551

[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: 0.218944126
[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: 0.00201986 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.006739411

Gravity::multilevel_solve_for_new_phi() time = 0.013979906

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 = 0.004869928 on level 0

Castro::do_old_sources() time = 0.003696174 on level 0

Castro::do_old_sources() time = 0.008236942 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 = 0.143036037 on level 0

Castro::construct_old_gravity() time = 0.000463569 on level 1

Castro::do_old_sources() time = 0.000999641 on level 1

Castro::do_old_sources() time = 0.002033903 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 = 0.01091858 on level 1

Castro::reflux() at level 0 : time = 0.017605269

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

Gravity::fill_multipole_BCs() time = 0.006583502

Gravity::multilevel_solve_for_new_phi() time = 0.02259895

Castro::construct_new_gravity() time = 0.027772616 on level 0

Castro::do_new_sources() time = 0.004899015 on level 0

Castro::construct_new_gravity() time = 0.000370787 on level 1

Castro::do_new_sources() time = 0.001371566 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 3.636917681

[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: 0.300244487
[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: 0.002321147 new finest: 1
Castro::numpts_1d at level  1 is 340
Gravity::fill_multipole_BCs() time = 0.006752652

Gravity::multilevel_solve_for_new_phi() time = 0.014057471

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 = 0.004657424 on level 0

Castro::do_old_sources() time = 0.003709279 on level 0

Castro::do_old_sources() time = 0.005817189 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 = 0.0951874 on level 0

Castro::construct_old_gravity() time = 0.000308251 on level 1

Castro::do_old_sources() time = 0.000872681 on level 1

Castro::do_old_sources() time = 0.001612764 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 = 0.010365376 on level 1

Castro::reflux() at level 0 : time = 0.018908113

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

Gravity::fill_multipole_BCs() time = 0.006603454

Gravity::multilevel_solve_for_new_phi() time = 0.022693424

Castro::construct_new_gravity() time = 0.027421706 on level 0

Castro::do_new_sources() time = 0.008636698 on level 0

Castro::construct_new_gravity() time = 0.000398854 on level 1

Castro::do_new_sources() time = 0.001407718 on level 1

  Subcycle completed

  Subcycling complete

  Zones advanced per microsecond from level 0 to level 1: 4.521324332

[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: 0.249272571
[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 = 0.118752477  seconds


Ending run at 07:58:20 UTC on 2026-08-11.
Run time = 2.738361565
Run time without initialization = 1.37953519

  Average number of zones advanced per microsecond: 3.587
  Average number of zones advanced per microsecond per rank: 3.587

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): 2536
[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 (26.08-13-g52ff27ef5904) finalized