Welcome to www.arepo-code.org Forums Arepo forum Questions about the code functionality how to make the simulation run for longer

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  • #505
    Konstantin Zuzik
    Participant

    Sorry for a newbie question… I succeeded with successfully running a simulation (wohoo!) – dump is below. However it finishes in 0.1 second. How to make it run for longer – which parameters control this? Thank you

    kz@kz-MS-7978:~/arepo/examples/cosmo_box_gravity_only_3d$ mpirun -np 1 /home/kz/arepo/Arepo param.txt

    __ ____ ____ ____ _____
    /__\ ( _ \( ___)( _ \( _ )
    /(__)\ ) / )__) )___/ )(_)(
    (__)(__)(_)\_)(____)(__) (_____)

    ————————————————————————————————————————-
    AvailMem: Largest = 9767.77 Mb (on task= 0), Smallest = 9767.77 Mb (on task= 0), Average = 9767.77 Mb
    Total Mem: Largest = 15974.74 Mb (on task= 0), Smallest = 15974.74 Mb (on task= 0), Average = 15974.74 Mb
    Committed_AS: Largest = 6206.96 Mb (on task= 0), Smallest = 6206.96 Mb (on task= 0), Average = 6206.96 Mb
    SwapTotal: Largest = 2048.00 Mb (on task= 0), Smallest = 2048.00 Mb (on task= 0), Average = 2048.00 Mb
    SwapFree: Largest = 2048.00 Mb (on task= 0), Smallest = 2048.00 Mb (on task= 0), Average = 2048.00 Mb
    AllocMem: Largest = 6206.96 Mb (on task= 0), Smallest = 6206.96 Mb (on task= 0), Average = 6206.96 Mb
    ————————————————————————————————————————-
    Task=0 has the maximum commited memory and is host: kz-MS-7978
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    This is Arepo, version Arepo public 1.0.

    Running with 1 MPI tasks.

    Apparently we’re using 1 compute nodes (we have a minimum of 1 MPI tasks per node, and a maximum of 1)

    Code was compiled with settings:

    HAVE_HDF5

    Obtaining parameters from file ‘param.txt’:

    InitCondFile ./ics
    OutputDir ./output
    SnapshotFileBase snap
    OutputListFilename ./output_list.txt
    ICFormat 1
    SnapFormat 3
    TimeLimitCPU 930000
    CpuTimeBetRestartFile 12000
    ResubmitOn 0
    ResubmitCommand my-scriptfile
    MaxMemSize 2500
    TimeBegin 0.0078125
    TimeMax 1
    ComovingIntegrationOn 1
    PeriodicBoundariesOn 1
    CoolingOn 0
    StarformationOn 0
    Omega0 0.3089
    OmegaLambda 0.6911
    OmegaBaryon 0
    HubbleParam 0.6774
    BoxSize 50000
    OutputListOn 1
    TimeBetSnapshot 0
    TimeOfFirstSnapshot 0
    TimeBetStatistics 0.01
    NumFilesPerSnapshot 1
    NumFilesWrittenInParallel 1
    TypeOfTimestepCriterion 0
    ErrTolIntAccuracy 0.012
    CourantFac 0.3
    MaxSizeTimestep 0.005
    MinSizeTimestep 2e-09
    InitGasTemp 244.81
    MinGasTemp 5
    MinimumDensityOnStartUp 1e-20
    LimitUBelowThisDensity 0
    LimitUBelowCertainDensityToThisValue 0
    MinEgySpec 0
    TypeOfOpeningCriterion 1
    ErrTolTheta 0.7
    ErrTolForceAcc 0.0025
    MultipleDomains 4
    TopNodeFactor 2.5
    ActivePartFracForNewDomainDecomp 0.01
    DesNumNgb 64
    MaxNumNgbDeviation 4
    UnitLength_in_cm 3.08568e+21
    UnitMass_in_g 1.989e+43
    UnitVelocity_in_cm_per_s 100000
    GravityConstantInternal 0
    SofteningComovingType0 40
    SofteningComovingType1 40
    SofteningComovingType2 40
    SofteningComovingType3 40
    SofteningComovingType4 40
    SofteningComovingType5 40
    SofteningMaxPhysType0 20
    SofteningMaxPhysType1 20
    SofteningMaxPhysType2 20
    SofteningMaxPhysType3 20
    SofteningMaxPhysType4 20
    SofteningMaxPhysType5 20
    GasSoftFactor 2.5
    SofteningTypeOfPartType0 0
    SofteningTypeOfPartType1 1
    SofteningTypeOfPartType2 1
    SofteningTypeOfPartType3 1
    SofteningTypeOfPartType4 1
    SofteningTypeOfPartType5 1
    CellShapingSpeed 0.5
    CellShapingFactor 1

    BEGRUN: found 2 times in output-list.
    BEGRUN: Size of particle structure 80 [bytes]
    BEGRUN: Size of sph particle structure 152 [bytes]
    BEGRUN: Size of gravity tree node 48 [bytes]
    BEGRUN: Hubble (internal units) = 0.1
    BEGRUN: G (internal units) = 43018.7
    BEGRUN: UnitMass_in_g = 1.989e+43
    BEGRUN: UnitTime_in_s = 3.08568e+16
    BEGRUN: UnitVelocity_in_cm_per_s = 100000
    BEGRUN: UnitDensity_in_cgs = 6.76991e-22
    BEGRUN: UnitEnergy_in_cgs = 1.989e+53

    BEGRUN: MinEgySpec set to 0.0507646 based on MinGasTemp=5
    INIT: 5/5 Gradients used.
    READIC: Reading file `./ics’ on task=0 and distribute it to 0 to 0 (contains 32768 particles).
    ALLOCATE: initial allocation for MaxPart = 40960
    ALLOCATE: initial allocation for MaxPartSph = 0

    READIC: filenr=0, ‘./ics’ contains:
    READIC: Type 0 (gas): 0 (tot= 0) masstab= 0
    READIC: Type 1 (halo): 32768 (tot= 32768) masstab= 32.7054
    READIC: Type 2 (disk): 0 (tot= 0) masstab= 0
    READIC: Type 3 (bulge): 0 (tot= 0) masstab= 0
    READIC: Type 4 (stars): 0 (tot= 0) masstab= 0
    READIC: Type 5 (bndry): 0 (tot= 0) masstab= 0

    READIC: reading block 0 (Coordinates)…
    READIC: reading block 1 (Velocities)…
    READIC: reading block 2 (ParticleIDs)…
    READIC: reading block 3 (Masses)…
    READIC: reading block 4 (InternalEnergy)…
    READIC: reading done (took 0.00979135 sec).
    READIC: Total number of particles : 32768

    INIT: MeanVolume=0
    INIT: Testing ID uniqueness…
    INIT: success. took=0.00279222 sec
    VORONOI: init connectivity
    VORONOI: done with init of connectivity
    DOMAIN: Begin domain decomposition (sync-point 0).
    DOMAIN: NTopleaves=15, determination of top-level tree involved 2 iterations and took 0.0114927 sec
    DOMAIN: cost summation for top-level tree took 0.000362218 sec
    DOMAIN: balance reached among multiple-domains=1.10781, average leave-nodes per domain=3.75 (took 9.11e-07 sec)
    DOMAIN: combining multiple-domains took 0.000198947 sec
    DOMAIN: task reshuffling took 0.00118897 sec
    DOMAIN: particle rearrangement work took 0.00245425 sec
    ALLOCATE: Changing to MaxPartSph = 0
    DOMAIN: exchange of 0 particles done. (took 0.000185409 sec)
    DOMAIN: domain decomposition done. (took in total 0.0165875 sec)
    DOMAIN: Peano-Hilbert order done, took 0.00266475 sec.
    FORCETREE: Tree construction. (inserting 0 points)
    FORCETREE: Tree construction done. <avg imported/local ratio>=0 <numnodes>=17 NTopnodes=17 NTopleaves=15 tree-build-scalability=1
    VORONOI: Calculating Gradients…
    VORONOI: Limiting gradients…

    RUN: Setting next time for snapshot file to Time_next= 0.5 (DumpFlag=1)

    Sync-Point 0, Time: 0.0078125, Redshift: 127, Systemstep: 0, Dloga: 0, Nsync-grv: 32768, Nsync-hyd: 0
    DOMAIN: Begin domain decomposition (sync-point 0).
    DOMAIN: NTopleaves=15, determination of top-level tree involved 2 iterations and took 0.00602428 sec
    DOMAIN: cost summation for top-level tree took 0.00032716 sec
    DOMAIN: balance reached among multiple-domains=1.10781, average leave-nodes per domain=3.75 (took 7.13e-07 sec)
    DOMAIN: combining multiple-domains took 0.000224867 sec
    DOMAIN: task reshuffling took 0.00121494 sec
    DOMAIN: particle rearrangement work took 0.00238006 sec
    ALLOCATE: Changing to MaxPartSph = 0
    DOMAIN: exchange of 0 particles done. (took 0.000235881 sec)
    DOMAIN: domain decomposition done. (took in total 0.0109032 sec)
    DOMAIN: Peano-Hilbert order done, took 0.000938113 sec.
    VORONOI: Calculating Gradients…
    VORONOI: Limiting gradients…
    VORONOI: Calculating Gradients…
    VORONOI: Limiting gradients…
    FLUX: exchanged fluxes over 0 faces, with 0 reduced (fraction 0), cumulative fraction 0

    Sync-Point 1, Time: 1, Redshift: 2.22045e-16, Systemstep: 0.992187, Dloga: 4.85203, Nsync-grv: 32768, Nsync-hyd: 0
    DOMAIN: Begin domain decomposition (sync-point 1).
    DOMAIN: NTopleaves=15, determination of top-level tree involved 2 iterations and took 0.00613392 sec
    DOMAIN: cost summation for top-level tree took 0.000331013 sec
    DOMAIN: balance reached among multiple-domains=1.10781, average leave-nodes per domain=3.75 (took 8.78e-07 sec)
    DOMAIN: combining multiple-domains took 0.000223341 sec
    DOMAIN: task reshuffling took 0.00113269 sec
    DOMAIN: particle rearrangement work took 0.00217286 sec
    ALLOCATE: Changing to MaxPartSph = 0
    DOMAIN: exchange of 0 particles done. (took 0.000234628 sec)
    DOMAIN: domain decomposition done. (took in total 0.0107114 sec)
    DOMAIN: Peano-Hilbert order done, took 0.00107799 sec.
    FLUX: exchanged fluxes over 0 faces, with 0 reduced (fraction 0), cumulative fraction 0

    writing snapshot file #0 @ time 1 … (DumpFlag=1)
    writing snapshot files group 1 out of 1 – files 0-0 (total of 1 files): ‘./output/snap_000’
    writing block 0 (Coordinates)…
    writing block 1 (Velocities)…
    writing block 2 (ParticleIDs)…
    done with writing snapshot (took 0.00292155 sec).

    RUN: There is no valid time for a further snapshot file.

    Final time=1 reached. Simulation ends.
    RESTART: PageSize = 4096
    RESTART: Writing restart files.
    RESTART: Backup restart files…
    RESTART: done renaming pre-existing restart files to bak files.
    RESTART: Writing restart files group #1 out of 1…
    RESTART: Checking restart files group #1 out of 1…
    All restart files written successfully.
    RESTART: load/save took 0.0182847 sec, corresponds to I/O rate of 319.136 MB/sec
    RESTART: done.
    Code run for 0.100076 seconds!
    endrun called, calling MPI_Finalize()
    bye!

    #507
    Alankar Dutta
    Participant

    TimeMax in the Parameter file controls the final time of the simulation in code units. For Cosmological runs please refer to the manual. Hope this helps.

    #508
    Konstantin Zuzik
    Participant

    Alankar, I increased TimeMax to 1e+11, but my code still terminates in less than a second with the seemingly successful output shown above. I also went over the documentation… Any other suggestions?

    #509

    Hi Konstantin,

    To me, it looks like you would like to run the cosmo_box_gravity_only_3d example
    However, judging from the output, in particular

    Code was compiled with settings:
    
    HAVE_HDF5

    it looks like Arepo is not compiled with the correct Config.sh file.
    In your case, e.g. the SELFGRAVITY flag is not active, which means that
    Arepo will not perform a gravity calculation. Since the test-case also does not include any gas cells,
    this means that there are essentially no forces calculated and therefore the simulation is very fast.

    To compile Arepo with the correct Config.sh file, type

    make CONFIG=./examples/cosmo_box_gravity_only_3d/Config.sh BUILD=./examples/cosmo_box_gravity_only_3d/build EXEC=./examples/cosmo_box_gravity_only_3d/Arepo

    from the ./arepo directory.

    Alternatively, you can just go into test.sh, comment out all test-cases but the one you like and remove the rm -rf ./run statatements.
    Then execute via bash ./test.sh
    This will copy the test-case over to a directory ./run/examples/…
    compile it and run it.

    Note that the time variable and therefore also the TimeMax parameter represents the so-called scalefactor for all cosmological simulations (https://en.wikipedia.org/wiki/Scale_factor_(cosmology)), therefore, I would leave it at 1 since this represents the age of the universe.

    #510
    Konstantin Zuzik
    Participant

    Rainer, thanks a lot, it’s working now! I recompiled as you suggested. Below is the final output.

    Happy New Year!

    ===

    Sync-Point 2625, Time: 1, Redshift: 2.22045e-16, Systemstep: 0.000592113, Dloga: 0.000592289, Nsync-grv: 32768, Nsync-hyd: 0
    DOMAIN: Begin domain decomposition (sync-point 2625).
    DOMAIN: New global displacement vector: 15981.2, -11279.6, -16787.7
    DOMAIN: NTopleaves=15, determination of top-level tree involved 2 iterations and took 0.00747683 sec
    DOMAIN: cost summation for top-level tree took 0.000578114 sec
    DOMAIN: balance reached among multiple-domains=1.417, average leave-nodes per domain=3.75 (took 7.35e-07 sec)
    DOMAIN: combining multiple-domains took 0.000460734 sec
    DOMAIN: task reshuffling took 0.00123746 sec
    DOMAIN: particle rearrangement work took 0.00280336 sec
    ALLOCATE: Changing to MaxPartSph = 0
    DOMAIN: exchange of 0 particles done. (took 0.000234148 sec)
    DOMAIN: domain decomposition done. (took in total 0.0139035 sec)
    DOMAIN: Peano-Hilbert order done, took 0.00375918 sec.
    FLUX: exchanged fluxes over 0 faces, with 0 reduced (fraction 0), cumulative fraction 0
    PM-PERIODIC: Starting periodic PM calculation. (presently allocated=6.14655 MB)
    PM-PERIODIC: done. (took 1.01981 seconds)
    TIMESTEPS: displacement time constraint: 0.00345915 (0.005)
    FORCETREE: Tree construction. (inserting 801 points)
    FORCETREE: Tree construction done.
    GRAVTREE: Begin tree force. (presently allocated=12.7358 MB)
    FORCETREE: Cost assignment for TakeLevel=3, highest active-TimeBin=18
    GRAVTREE: tree-force is done.
    GRAVITY: done for timebin 16, 801 particles (took 0.00410446 sec)
    KICKS: 2nd gravity for hierarchical timebin=16: particles 801
    FORCETREE: Tree construction. (inserting 4381 points)
    FORCETREE: Tree construction done.
    GRAVTREE: Begin tree force. (presently allocated=12.7358 MB)
    FORCETREE: Cost assignment for TakeLevel=2, highest active-TimeBin=18
    GRAVTREE: tree-force is done.
    GRAVITY: done for timebin 17, 4381 particles (took 0.0188648 sec)
    KICKS: 2nd gravity for hierarchical timebin=17: particles 4381
    FORCETREE: Tree construction. (inserting 32768 points)
    FORCETREE: Tree construction done. <avg imported/local ratio>=0 <numnodes>=20122 NTopnodes=17 NTopleaves=15 tree-build-scalability=1
    GRAVTREE: Begin tree force. (presently allocated=12.7358 MB)
    FORCETREE: Cost assignment for TakeLevel=1, highest active-TimeBin=18
    GRAVTREE: tree-force is done.
    GRAVTREE: Setting OldAcc!
    GRAVITY: done for timebin 18, 32768 particles (took 0.0859656 sec)
    KICKS: 2nd gravity for hierarchical timebin=18: particles 32768

    writing snapshot file #1 @ time 1 … (DumpFlag=1)

    We shall first compute a group catalogue for this snapshot file
    FOF: Begin to compute FoF group catalogue… (presently allocated=6.14655 MB)
    DOMAIN: Begin domain decomposition (sync-point 2625).
    DOMAIN: New global displacement vector: -15711.4, -11728.2, -2401.44
    DOMAIN: NTopleaves=15, determination of top-level tree involved 2 iterations and took 0.00804758 sec
    DOMAIN: cost summation for top-level tree took 0.000728482 sec
    DOMAIN: balance reached among multiple-domains=1.08177, average leave-nodes per domain=3.75 (took 8.67e-07 sec)
    DOMAIN: combining multiple-domains took 0.000617491 sec
    DOMAIN: task reshuffling took 0.00122581 sec
    DOMAIN: particle rearrangement work took 0.00232047 sec
    ALLOCATE: Changing to MaxPartSph = 0
    DOMAIN: exchange of 0 particles done. (took 0.000219911 sec)
    DOMAIN: domain decomposition done. (took in total 0.0143443 sec)
    DOMAIN: Peano-Hilbert order done, took 0.00360676 sec.
    FOF: Comoving linking length: 312.528 (presently allocated=11.459 MB)
    FORCETREE: Tree construction. (inserting 32768 points)
    FORCETREE: Tree construction done. <avg imported/local ratio>=0 <numnodes>=20142 NTopnodes=17 NTopleaves=15 tree-build-scalability=1
    FOF: Start linking particles (presently allocated=18.7983 MB)
    FOF: links on local processor done (took 0.0294941 sec).
    FOF: Marked=0 out of the 32768 primaries which are linked
    FOF: fully linked nodes determined (took 0.000790423 sec).
    FOF: begin linking across processors (presently allocated=18.9283 MB)
    FOF: have done 0 cross links (processed 0, took 0.000289265 sec)
    FOF: Local groups found.
    FOF: group finding took = 0.0306561 sec
    FORCETREE: Tree construction. (inserting 32768 points)
    FORCETREE: Tree construction done. <avg imported/local ratio>=0 <numnodes>=20142 NTopnodes=17 NTopleaves=15 tree-build-scalability=1
    FOF: Start finding nearest dm-particle (presently allocated=18.7983 MB)
    FOF: done finding nearest dm-particle
    FOF: attaching gas and star particles to nearest dm particles took = 0.000377641 sec
    FOF: compiling local group data and catalogue took = 0.00639814 sec
    FOF: Total number of FOF groups with at least 32 particles: 61
    FOF: Largest FOF group has 1272 particles.
    FOF: Total number of particles in FOF groups: 7048
    FOF: group properties are now allocated.. (presently allocated=12.6293 MB)
    FOF: computation of group properties took = 9.6074e-05 sec
    FOF: start assigning group numbers
    FOF: Assigning of group numbers took = 0.000324636 sec
    FOF: Finished computing FoF groups. (presently allocated=12.6293 MB)

    SUBFIND: We now execute a parallel version of SUBFIND.
    FORCETREE: Tree construction. (inserting 32768 points)
    FORCETREE: Tree construction done. <avg imported/local ratio>=0 <numnodes>=20142 NTopnodes=17 NTopleaves=15 tree-build-scalability=1
    SUBFIND: finding smoothing length for all particles
    SUBFIND: ngb iteration 1: need to repeat for 31384 particles. (took 0.0973322 sec)
    SUBFIND: ngb iteration 2: need to repeat for 29353 particles. (took 0.0997671 sec)
    SUBFIND: ngb iteration 3: need to repeat for 25860 particles. (took 0.0985056 sec)
    SUBFIND: ngb iteration 4: need to repeat for 20262 particles. (took 0.0880804 sec)
    SUBFIND: ngb iteration 5: need to repeat for 14551 particles. (took 0.0668657 sec)
    SUBFIND: ngb iteration 6: need to repeat for 10431 particles. (took 0.0475866 sec)
    SUBFIND: ngb iteration 7: need to repeat for 7669 particles. (took 0.0319011 sec)
    SUBFIND: ngb iteration 8: need to repeat for 5748 particles. (took 0.0245903 sec)
    SUBFIND: ngb iteration 9: need to repeat for 4311 particles. (took 0.0187231 sec)
    SUBFIND: ngb iteration 10: need to repeat for 3148 particles. (took 0.0156446 sec)
    SUBFIND: ngb iteration 11: need to repeat for 2191 particles. (took 0.0114829 sec)
    SUBFIND: ngb iteration 12: need to repeat for 1529 particles. (took 0.00868616 sec)
    SUBFIND: ngb iteration 13: need to repeat for 1031 particles. (took 0.00608038 sec)
    SUBFIND: ngb iteration 14: need to repeat for 628 particles. (took 0.00438022 sec)
    SUBFIND: ngb iteration 15: need to repeat for 390 particles. (took 0.00314296 sec)
    SUBFIND: ngb iteration 16: need to repeat for 225 particles. (took 0.00220204 sec)
    SUBFIND: ngb iteration 17: need to repeat for 141 particles. (took 0.00119035 sec)
    SUBFIND: ngb iteration 18: need to repeat for 74 particles. (took 0.000759081 sec)
    SUBFIND: ngb iteration 19: need to repeat for 35 particles. (took 0.000523727 sec)
    SUBFIND: ngb iteration 20: need to repeat for 28 particles. (took 0.000244447 sec)
    SUBFIND: ngb iteration 21: need to repeat for 11 particles. (took 0.000217633 sec)
    SUBFIND: ngb iteration 22: need to repeat for 6 particles. (took 0.000127397 sec)
    SUBFIND: ngb iteration 23: need to repeat for 5 particles. (took 9.4529e-05 sec)
    SUBFIND: iteration to correct primary neighbor count took 0.629853 sec
    FORCETREE: Tree construction. (inserting 32768 points)
    FORCETREE: Tree construction done. <avg imported/local ratio>=0 <numnodes>=20142 NTopnodes=17 NTopleaves=15 tree-build-scalability=1
    SUBFIND: finding total densities around all particles
    SUBFIND: density() took 0.124339 sec
    SUBFIND: Number of FOF halos treated with collective SubFind code = 0
    SUBFIND: Number of processors used in different partitions for the collective SubFind code = 0
    SUBFIND: (The adopted size-limit for the collective algorithm was 19660 particles.)
    SUBFIND: The other 61 FOF halos are treated in parallel with serial code
    SUBFIND: particle balance=1
    SUBFIND: subfind_exchange() took 0.00261092 sec
    SUBFIND: particle balance for processing=1
    SUBFIND-SERIAL: Start to do 61 small groups (cumulative length 7048) with serial subfind algorithm on 1 processors (root-node=0)
    SUBFIND-SERIAL: processing of serial groups took 0.0758087 sec
    ALLOCATE: Changing to MaxPart = 40960
    ALLOCATE: Changing to MaxPartSph = 0
    SUBFIND: subfind_exchange() (for return to original CPU) took 0.00246521 sec
    FORCETREE: Tree construction. (inserting 32768 points)
    FORCETREE: Tree construction done. <avg imported/local ratio>=0 <numnodes>=20142 NTopnodes=17 NTopleaves=15 tree-build-scalability=1
    SUBFIND: SO iteration 1: need to repeat for 61 halo centers. (took 0.000698816 sec)
    SUBFIND: SO iteration 2: need to repeat for 61 halo centers. (took 0.000282342 sec)
    SUBFIND: SO iteration 3: need to repeat for 61 halo centers. (took 0.000296546 sec)
    SUBFIND: SO iteration 4: need to repeat for 61 halo centers. (took 0.000298221 sec)
    SUBFIND: SO iteration 5: need to repeat for 61 halo centers. (took 0.000245984 sec)
    SUBFIND: SO iteration 6: need to repeat for 61 halo centers. (took 0.000296141 sec)
    SUBFIND: SO iteration 7: need to repeat for 61 halo centers. (took 0.000300073 sec)
    SUBFIND: SO iteration 8: need to repeat for 61 halo centers. (took 0.00030828 sec)
    SUBFIND: SO iteration 9: need to repeat for 61 halo centers. (took 0.000279058 sec)
    SUBFIND: SO iteration 10: need to repeat for 61 halo centers. (took 0.000266469 sec)
    SUBFIND: SO iteration 11: need to repeat for 61 halo centers. (took 0.000283434 sec)
    SUBFIND: SO iteration 12: need to repeat for 61 halo centers. (took 0.000293985 sec)
    SUBFIND: SO iteration 13: need to repeat for 61 halo centers. (took 0.00025908 sec)
    SUBFIND: SO iteration 14: need to repeat for 61 halo centers. (took 0.000257234 sec)
    SUBFIND: SO iteration 15: need to repeat for 61 halo centers. (took 0.000258514 sec)
    SUBFIND: Starting SO potential energy computation
    SUBFIND: SO potential energy computation took 0.00880104 sec
    SUBFIND: SO iteration 1: need to repeat for 61 halo centers. (took 0.000533756 sec)
    SUBFIND: SO iteration 2: need to repeat for 61 halo centers. (took 0.000324272 sec)
    SUBFIND: SO iteration 3: need to repeat for 61 halo centers. (took 0.000308912 sec)
    SUBFIND: SO iteration 4: need to repeat for 61 halo centers. (took 0.000300651 sec)
    SUBFIND: SO iteration 5: need to repeat for 61 halo centers. (took 0.000271105 sec)
    SUBFIND: SO iteration 6: need to repeat for 61 halo centers. (took 0.000227833 sec)
    SUBFIND: SO iteration 7: need to repeat for 61 halo centers. (took 0.00028054 sec)
    SUBFIND: SO iteration 8: need to repeat for 61 halo centers. (took 0.000283399 sec)
    SUBFIND: SO iteration 9: need to repeat for 61 halo centers. (took 0.000253381 sec)
    SUBFIND: SO iteration 10: need to repeat for 61 halo centers. (took 0.000260509 sec)
    SUBFIND: SO iteration 11: need to repeat for 61 halo centers. (took 0.000283288 sec)
    SUBFIND: SO iteration 12: need to repeat for 61 halo centers. (took 0.000287664 sec)
    SUBFIND: SO iteration 13: need to repeat for 61 halo centers. (took 0.000262602 sec)
    SUBFIND: SO iteration 14: need to repeat for 61 halo centers. (took 0.000249912 sec)
    SUBFIND: SO iteration 15: need to repeat for 61 halo centers. (took 0.000228056 sec)
    SUBFIND: SO iteration 16: need to repeat for 4 halo centers. (took 0.000201132 sec)
    SUBFIND: Starting SO potential energy computation
    SUBFIND: SO potential energy computation took 0.00683474 sec
    SUBFIND: SO iteration 1: need to repeat for 61 halo centers. (took 0.000291643 sec)
    SUBFIND: SO iteration 2: need to repeat for 61 halo centers. (took 0.000233855 sec)
    SUBFIND: SO iteration 3: need to repeat for 61 halo centers. (took 0.000243391 sec)
    SUBFIND: SO iteration 4: need to repeat for 61 halo centers. (took 0.000209658 sec)
    SUBFIND: SO iteration 5: need to repeat for 61 halo centers. (took 0.000206747 sec)
    SUBFIND: SO iteration 6: need to repeat for 61 halo centers. (took 0.000205596 sec)
    SUBFIND: SO iteration 7: need to repeat for 61 halo centers. (took 0.000231505 sec)
    SUBFIND: SO iteration 8: need to repeat for 61 halo centers. (took 0.000229131 sec)
    SUBFIND: SO iteration 9: need to repeat for 61 halo centers. (took 0.000218176 sec)
    SUBFIND: SO iteration 10: need to repeat for 61 halo centers. (took 0.000177361 sec)
    SUBFIND: SO iteration 11: need to repeat for 61 halo centers. (took 0.000176698 sec)
    SUBFIND: SO iteration 12: need to repeat for 61 halo centers. (took 0.000211321 sec)
    SUBFIND: SO iteration 13: need to repeat for 61 halo centers. (took 0.00019797 sec)
    SUBFIND: SO iteration 14: need to repeat for 61 halo centers. (took 0.000198931 sec)
    SUBFIND: SO iteration 15: need to repeat for 61 halo centers. (took 0.000200498 sec)
    SUBFIND: SO iteration 16: need to repeat for 54 halo centers. (took 0.000200617 sec)
    SUBFIND: SO iteration 17: need to repeat for 1 halo centers. (took 0.000143907 sec)
    SUBFIND: Starting SO potential energy computation
    SUBFIND: SO potential energy computation took 0.00529221 sec
    SUBFIND: SO iteration 1: need to repeat for 61 halo centers. (took 0.000291069 sec)
    SUBFIND: SO iteration 2: need to repeat for 61 halo centers. (took 0.000250127 sec)
    SUBFIND: SO iteration 3: need to repeat for 61 halo centers. (took 0.000226903 sec)
    SUBFIND: SO iteration 4: need to repeat for 61 halo centers. (took 0.000216816 sec)
    SUBFIND: SO iteration 5: need to repeat for 61 halo centers. (took 0.000203173 sec)
    SUBFIND: SO iteration 6: need to repeat for 61 halo centers. (took 0.000189823 sec)
    SUBFIND: SO iteration 7: need to repeat for 61 halo centers. (took 0.000177102 sec)
    SUBFIND: SO iteration 8: need to repeat for 61 halo centers. (took 0.000136885 sec)
    SUBFIND: SO iteration 9: need to repeat for 61 halo centers. (took 0.000162236 sec)
    SUBFIND: SO iteration 10: need to repeat for 61 halo centers. (took 0.000186298 sec)
    SUBFIND: SO iteration 11: need to repeat for 61 halo centers. (took 0.000238895 sec)
    SUBFIND: SO iteration 12: need to repeat for 61 halo centers. (took 0.000183743 sec)
    SUBFIND: SO iteration 13: need to repeat for 61 halo centers. (took 0.000170823 sec)
    SUBFIND: SO iteration 14: need to repeat for 61 halo centers. (took 0.000147915 sec)
    SUBFIND: SO iteration 15: need to repeat for 61 halo centers. (took 0.000144216 sec)
    SUBFIND: SO iteration 16: need to repeat for 61 halo centers. (took 0.000156769 sec)
    SUBFIND: SO iteration 17: need to repeat for 14 halo centers. (took 0.000157203 sec)
    SUBFIND: Starting SO potential energy computation
    SUBFIND: SO potential energy computation took 0.00320451 sec
    SUBFIND: determining spherical overdensity masses took 0.0448677 sec
    FOF: Begin Angular Momentum Calculation for FOF Groups.
    SUBFIND: particle balance=1
    SUBFIND: subfind_exchange() took 0.00264926 sec
    SUBFIND: particle balance for AM processing=1
    SUBFIND-SERIAL: Start to do AM for 61 small groups with serial subfind algorithm on 1 processors (root-node=0)
    SUBFIND-SERIAL: processing AM of serial groups took 0.000457187 sec
    SUBFIND: subfind_exchange() (for return to original CPU after AM) took 0.00222277 sec
    FOF: Angular Momentum Calculation for FOF Groups finished successfully.
    SUBFIND: assembled and ordered groups and subgroups (took 7.4189e-05 sec)
    FOF/SUBFIND: writing group catalogue: ‘./output/fof_subhalo_tab_001’ (file 1 of 1)
    FOF/SUBFIND: writing block 0 (GroupLen)…
    FOF/SUBFIND: writing block 1 (GroupMass)…
    FOF/SUBFIND: writing block 2 (GroupPos)…
    FOF/SUBFIND: writing block 3 (GroupCM)…
    FOF/SUBFIND: writing block 4 (GroupVel)…
    FOF/SUBFIND: writing block 5 (GroupLenType)…
    FOF/SUBFIND: writing block 6 (GroupMassType)…
    FOF/SUBFIND: writing block 8 (Group_M_Mean200)…
    FOF/SUBFIND: writing block 9 (Group_R_Mean200)…
    FOF/SUBFIND: writing block 10 (Group_M_Crit200)…
    FOF/SUBFIND: writing block 11 (Group_R_Crit200)…
    FOF/SUBFIND: writing block 12 (Group_M_TopHat200)…
    FOF/SUBFIND: writing block 13 (Group_R_TopHat200)…
    FOF/SUBFIND: writing block 14 (Group_M_Crit500)…
    FOF/SUBFIND: writing block 15 (Group_R_Crit500)…
    FOF/SUBFIND: writing block 16 (Group_J_Mean200)…
    FOF/SUBFIND: writing block 17 (Group_Jdm_Mean200)…
    FOF/SUBFIND: writing block 18 (Group_Jgas_Mean200)…
    FOF/SUBFIND: writing block 19 (Group_Jstars_Mean200)…
    FOF/SUBFIND: writing block 20 (Group_MassType_Mean200)…
    FOF/SUBFIND: writing block 21 (Group_LenType_Mean200)…
    FOF/SUBFIND: writing block 22 (Group_CMFrac_Mean200)…
    FOF/SUBFIND: writing block 23 (Group_CMFracType_Mean200)…
    FOF/SUBFIND: writing block 24 (Group_J_Crit200)…
    FOF/SUBFIND: writing block 25 (Group_Jdm_Crit200)…
    FOF/SUBFIND: writing block 26 (Group_Jgas_Crit200)…
    FOF/SUBFIND: writing block 27 (Group_Jstars_Crit200)…
    FOF/SUBFIND: writing block 28 (Group_MassType_Crit200)…
    FOF/SUBFIND: writing block 29 (Group_LenType_Crit200)…
    FOF/SUBFIND: writing block 30 (Group_CMFrac_Crit200)…
    FOF/SUBFIND: writing block 31 (Group_CMFracType_Crit200)…
    FOF/SUBFIND: writing block 32 (Group_J_TopHat200)…
    FOF/SUBFIND: writing block 33 (Group_Jdm_TopHat200)…
    FOF/SUBFIND: writing block 34 (Group_Jgas_TopHat200)…
    FOF/SUBFIND: writing block 35 (Group_Jstars_TopHat200)…
    FOF/SUBFIND: writing block 36 (Group_MassType_TopHat200)…
    FOF/SUBFIND: writing block 37 (Group_LenType_TopHat200)…
    FOF/SUBFIND: writing block 38 (Group_CMFrac_TopHat200)…
    FOF/SUBFIND: writing block 39 (Group_CMFracType_TopHat200)…
    FOF/SUBFIND: writing block 40 (Group_J_Crit500)…
    FOF/SUBFIND: writing block 41 (Group_Jdm_Crit500)…
    FOF/SUBFIND: writing block 42 (Group_Jgas_Crit500)…
    FOF/SUBFIND: writing block 43 (Group_Jstars_Crit500)…
    FOF/SUBFIND: writing block 44 (Group_MassType_Crit500)…
    FOF/SUBFIND: writing block 45 (Group_LenType_Crit500)…
    FOF/SUBFIND: writing block 46 (Group_CMFrac_Crit500)…
    FOF/SUBFIND: writing block 47 (Group_CMFracType_Crit500)…
    FOF/SUBFIND: writing block 48 (Group_J)…
    FOF/SUBFIND: writing block 49 (Group_Jdm)…
    FOF/SUBFIND: writing block 50 (Group_Jgas)…
    FOF/SUBFIND: writing block 51 (Group_Jstars)…
    FOF/SUBFIND: writing block 52 (Group_CMFrac)…
    FOF/SUBFIND: writing block 53 (Group_CMFracType)…
    FOF/SUBFIND: writing block 54 (GroupEkin)…
    FOF/SUBFIND: writing block 55 (GroupEthr)…
    FOF/SUBFIND: writing block 56 (GroupEpot)…
    FOF/SUBFIND: writing block 57 (Group_Epot_Crit200)…
    FOF/SUBFIND: writing block 58 (Group_Ekin_Crit200)…
    FOF/SUBFIND: writing block 59 (Group_Ethr_Crit200)…
    FOF/SUBFIND: writing block 60 (Group_Epot_Mean200)…
    FOF/SUBFIND: writing block 61 (Group_Ekin_Mean200)…
    FOF/SUBFIND: writing block 62 (Group_Ethr_Mean200)…
    FOF/SUBFIND: writing block 63 (Group_Epot_TopHat200)…
    FOF/SUBFIND: writing block 64 (Group_Ekin_TopHat200)…
    FOF/SUBFIND: writing block 65 (Group_Ethr_TopHat200)…
    FOF/SUBFIND: writing block 66 (Group_Epot_Crit500)…
    FOF/SUBFIND: writing block 67 (Group_Ekin_Crit500)…
    FOF/SUBFIND: writing block 68 (Group_Ethr_Crit500)…
    FOF/SUBFIND: writing block 69 (GroupNsubs)…
    FOF/SUBFIND: writing block 70 (GroupFirstSub)…
    FOF/SUBFIND: writing block 72 (SubhaloLen)…
    FOF/SUBFIND: writing block 73 (SubhaloMass)…
    FOF/SUBFIND: writing block 74 (SubhaloPos)…
    FOF/SUBFIND: writing block 75 (SubhaloVel)…
    FOF/SUBFIND: writing block 76 (SubhaloLenType)…
    FOF/SUBFIND: writing block 77 (SubhaloMassType)…
    FOF/SUBFIND: writing block 78 (SubhaloCM)…
    FOF/SUBFIND: writing block 79 (SubhaloSpin)…
    FOF/SUBFIND: writing block 82 (SubhaloEkin)…
    FOF/SUBFIND: writing block 83 (SubhaloEthr)…
    FOF/SUBFIND: writing block 84 (SubhaloEpot)…
    FOF/SUBFIND: writing block 85 (Subhalo_J)…
    FOF/SUBFIND: writing block 86 (Subhalo_Jdm)…
    FOF/SUBFIND: writing block 87 (Subhalo_Jgas)…
    FOF/SUBFIND: writing block 88 (Subhalo_Jstars)…
    FOF/SUBFIND: writing block 89 (Subhalo_JInHalfRad)…
    FOF/SUBFIND: writing block 90 (Subhalo_JdmInHalfRad)…
    FOF/SUBFIND: writing block 91 (Subhalo_JgasInHalfRad)…
    FOF/SUBFIND: writing block 92 (Subhalo_JstarsInHalfRad)…
    FOF/SUBFIND: writing block 93 (Subhalo_JInRad)…
    FOF/SUBFIND: writing block 94 (Subhalo_JdmInRad)…
    FOF/SUBFIND: writing block 95 (Subhalo_JgasInRad)…
    FOF/SUBFIND: writing block 96 (Subhalo_JstarsInRad)…
    FOF/SUBFIND: writing block 97 (Subhalo_CMFrac)…
    FOF/SUBFIND: writing block 98 (Subhalo_CMFracType)…
    FOF/SUBFIND: writing block 99 (Subhalo_CMFracInHalfRad)…
    FOF/SUBFIND: writing block 100 (Subhalo_CMFracTypeInHalfRad)…
    FOF/SUBFIND: writing block 101 (Subhalo_CMFracInRad)…
    FOF/SUBFIND: writing block 102 (Subhalo_CMFracTypeInRad)…
    FOF/SUBFIND: writing block 103 (SubhaloVelDisp)…
    FOF/SUBFIND: writing block 104 (SubhaloVmax)…
    FOF/SUBFIND: writing block 105 (SubhaloVmaxRad)…
    FOF/SUBFIND: writing block 106 (SubhaloHalfmassRad)…
    FOF/SUBFIND: writing block 107 (SubhaloHalfmassRadType)…
    FOF/SUBFIND: writing block 108 (SubhaloMassInRad)…
    FOF/SUBFIND: writing block 109 (SubhaloMassInHalfRad)…
    FOF/SUBFIND: writing block 110 (SubhaloMassInMaxRad)…
    FOF/SUBFIND: writing block 111 (SubhaloMassInRadType)…
    FOF/SUBFIND: writing block 112 (SubhaloMassInHalfRadType)…
    FOF/SUBFIND: writing block 113 (SubhaloMassInMaxRadType)…
    FOF/SUBFIND: writing block 114 (SubhaloIDMostbound)…
    FOF/SUBFIND: writing block 115 (SubhaloGrNr)…
    FOF/SUBFIND: writing block 116 (SubhaloParent)…
    SUBFIND: Subgroup catalogues saved. took = 0.00407869 sec
    SUBFIND: Finished with SUBFIND. (total time=0.937631 sec)
    SUBFIND: Total number of subhalos with at least 20 particles: 65
    SUBFIND: Largest subhalo has 1222 particles/cells.
    SUBFIND: Total number of particles/cells in subhalos: 6956
    FOF: All FOF related work finished. (presently allocated=11.459 MB)
    FOF: preparing output order of particles took 0.0156596 sec
    writing snapshot files group 1 out of 1 – files 0-0 (total of 1 files): ‘./output/snap_001’
    writing block 0 (Coordinates)…
    writing block 1 (Velocities)…
    writing block 2 (ParticleIDs)…
    writing block 37 (SubfindHsml)…
    writing block 38 (SubfindDensity)…
    writing block 39 (SubfindDMDensity)…
    writing block 40 (SubfindVelDisp)…
    done with writing snapshot (took 1.02899 sec).

    RUN: There is no valid time for a further snapshot file.

    Final time=1 reached. Simulation ends.
    RESTART: PageSize = 4096
    RESTART: Writing restart files.
    RESTART: Backup restart files…
    RESTART: no pre-existing restart files found.
    RESTART: Writing restart files group #1 out of 1…
    RESTART: Checking restart files group #1 out of 1…
    All restart files written successfully.
    RESTART: load/save took 0.030936 sec, corresponds to I/O rate of 318.001 MB/sec
    RESTART: done.
    Code run for 1168.847558 seconds!
    endrun called, calling MPI_Finalize()
    bye!

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