Running on hosts: cn18-[26-27] Running on 2 nodes. Running on 36 processors. Shared memory islands host a minimum of 18 and a maximum of 18 MPI ranks. We shall use 2 MPI ranks in total for assisting one-sided communication (1 per shared memory node). ___ __ ____ ___ ____ ____ __ / __) /__\ ( _ \ / __)( ___)(_ _)___ /. | ( (_-. /(__)\ )(_) )( (_-. )__) )( (___)(_ _) \___/(__)(__)(____/ \___/(____) (__) (_) This is Gadget, version 4.0. Git commit unknown, unknown Code was compiled with the following compiler and flags: mpicxx -std=c++11 -ggdb -O3 -march=native -Wall -Wno-format-security -I/users/lordpb666/opt/include -I/users/lordpb666/opt/include -I/users/lordpb666/opt/include -Ibuild -Isrc Code was compiled with the following settings: COOLING DOUBLEPRECISION=1 DOUBLEPRECISION_FFTW GADGET2_HEADER MULTIPOLE_ORDER=3 NSOFTCLASSES=2 NTYPES=6 POSITIONS_IN_64BIT SELFGRAVITY STARFORMATION TREE_NUM_BEFORE_NODESPLIT=4 Running on 34 MPI tasks. BEGRUN: Size of particle structure 128 [bytes] BEGRUN: Size of sph particle structure 224 [bytes] BEGRUN: Size of gravity tree node 152 [bytes] BEGRUN: Size of neighbour tree node 192 [bytes] BEGRUN: Size of subfind auxiliary data 56 [bytes] ------------------------------------------------------------------------------------------------------------------------- AvailMem: Largest = 89543.41 Mb (on task= 0), Smallest = 89495.51 Mb (on task= 17), Average = 89519.46 Mb Total Mem: Largest = 90631.57 Mb (on task= 0), Smallest = 90631.57 Mb (on task= 0), Average = 90631.57 Mb Committed_AS: Largest = 1136.07 Mb (on task= 17), Smallest = 1088.17 Mb (on task= 0), Average = 1112.12 Mb SwapTotal: Largest = 2045.00 Mb (on task= 0), Smallest = 2045.00 Mb (on task= 0), Average = 2045.00 Mb SwapFree: Largest = 2045.00 Mb (on task= 0), Smallest = 2020.73 Mb (on task= 17), Average = 2032.87 Mb AllocMem: Largest = 1136.07 Mb (on task= 17), Smallest = 1088.17 Mb (on task= 0), Average = 1112.12 Mb avail /dev/shm: Largest = 45309.27 Mb (on task= 0), Smallest = 45308.27 Mb (on task= 17), Average = 45308.77 Mb ------------------------------------------------------------------------------------------------------------------------- Task=0 has the maximum commited memory and is host: cn18-27 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Obtaining parameters from file 'param.txt': InitCondFile /users/lordpb666/GADGET4/ExampleICs/ics_collision_g4.dat OutputDir /users/lordpb666/GADGET4/Simulations/CollidingGalaxiesSFR/output SnapshotFileBase snapshot OutputListFilename empty.txt ICFormat 1 SnapFormat 3 TimeLimitCPU 86400 CpuTimeBetRestartFile 900 MaxMemSize 2000 TimeBegin 0 TimeMax 4 ComovingIntegrationOn 0 Omega0 0 OmegaLambda 0 OmegaBaryon 0 HubbleParam 1 BoxSize 0 Hubble 0 OutputListOn 0 TimeBetSnapshot 0.005 TimeOfFirstSnapshot 0 TimeBetStatistics 0.005 NumFilesPerSnapshot 1 MaxFilesWithConcurrentIO 1 ErrTolIntAccuracy 0.012 CourantFac 0.2 MaxSizeTimestep 0.01 MinSizeTimestep 0 TypeOfOpeningCriterion 1 ErrTolTheta 0.6 ErrTolThetaMax 1.2 ErrTolForceAcc 0.005 TopNodeFactor 3 ActivePartFracForNewDomainDecomp 0.01 DesNumNgb 64 MaxNumNgbDeviation 1 UnitLength_in_cm 3.08568e+21 UnitMass_in_g 1.989e+43 UnitVelocity_in_cm_per_s 100000 GravityConstantInternal 0 SofteningComovingClass0 0.1 SofteningComovingClass1 0.3 SofteningMaxPhysClass0 0.1 SofteningMaxPhysClass1 0.3 SofteningClassOfPartType0 0 SofteningClassOfPartType1 1 SofteningClassOfPartType2 0 SofteningClassOfPartType3 0 SofteningClassOfPartType4 0 SofteningClassOfPartType5 0 ArtBulkViscConst 1 MinEgySpec 0 InitGasTemp 0 MaxSfrTimescale 1.5 FactorSN 0.1 FactorEVP 1000 TempSupernova 1e+08 TempClouds 1000 CritOverDensity 57.7 CritPhysDensity 0 TreecoolFile TREECOOL MALLOC: Allocation of shared memory took 0.000393281 sec BEGRUN: Hubble (internal units) = 0 BEGRUN: h = 1 BEGRUN: G (internal units) = 43018.7 BEGRUN: UnitMass_in_g = 1.989e+43 BEGRUN: UnitLenth_in_cm = 3.08568e+21 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 COOLING: read ionization table with 171 entries in file `TREECOOL'. COOLING: using 170 ionization table entries from file `TREECOOL'. A0= 1000 Computed: PhysDensThresh= 0.000598411 (int units) 0.184076 h^2 cm^-3 EXPECTED FRACTION OF COLD GAS AT THRESHOLD = 0.904362 tcool=6.14623e-06 dens=0.0147712 egyhot=2104.87 Run-away sets in for dens=0.288833 Dynamic range for quiescent star formation= 482.666 Isotherm sheet central density: inf z0=0 READIC: filenr=0, '/users/lordpb666/GADGET4/ExampleICs/ics_collision_g4.dat' contains: READIC: Type 0 (gas): 600000 (tot= 600000) masstab= 4.29533e-06 READIC: Type 1: 600000 (tot= 600000) masstab= 0.000301276 READIC: Type 2: 300000 (tot= 300000) masstab= 1.74416e-05 READIC: Type 3: 100000 (tot= 100000) masstab= 1.9048e-05 READIC: Type 4: 0 (tot= 0) masstab= 0 READIC: Type 5: 0 (tot= 0) masstab= 0 READIC: Reading file `/users/lordpb666/GADGET4/ExampleICs/ics_collision_g4.dat' on task=0 and distribute it to 0 to 33. READIC: reading block 0 (Coordinates)... READIC: reading block 1 (Velocities)... READIC: reading block 2 (ParticleIDs)... READIC: reading block 4 (InternalEnergy)... READIC: reading done. Took 0.644939 sec, total size 45.014 MB, corresponds to effective I/O rate of 69.7957 MB/sec READIC: Total number of particles : 1600000 READIC: Region covered with particles: (-7938.91 -7956.65 -7776.29) -> (7981.71 7743.22 7666.31) READIC: Initial root node size: 63682.5 INIT: Testing ID uniqueness... INIT: success. took=2.01971 sec DOMAIN: Begin domain decomposition (sync-point 0). DOMAIN: Sum=4 TotalCost=4 NumTimeBinsToBeBalanced=1 MultipleDomains=4 DOMAIN: Increasing TopNodeAllocFactor=0.08 new value=0.104 DOMAIN: Increasing TopNodeAllocFactor=0.104 new value=0.1352 DOMAIN: Increasing TopNodeAllocFactor=0.1352 new value=0.17576 DOMAIN: Increasing TopNodeAllocFactor=0.17576 new value=0.228488 DOMAIN: Increasing TopNodeAllocFactor=0.228488 new value=0.297034 DOMAIN: Increasing TopNodeAllocFactor=0.297034 new value=0.386145 DOMAIN: Increasing TopNodeAllocFactor=0.386145 new value=0.501988 DOMAIN: Increasing TopNodeAllocFactor=0.501988 new value=0.652585 DOMAIN: Increasing TopNodeAllocFactor=0.652585 new value=0.84836 DOMAIN: Increasing TopNodeAllocFactor=0.84836 new value=1.10287 DOMAIN: Increasing TopNodeAllocFactor=1.10287 new value=1.43373 DOMAIN: Increasing TopNodeAllocFactor=1.43373 new value=1.86385 DOMAIN: Increasing TopNodeAllocFactor=1.86385 new value=2.423 DOMAIN: Increasing TopNodeAllocFactor=2.423 new value=3.1499 DOMAIN: Increasing TopNodeAllocFactor=3.1499 new value=4.09487 DOMAIN: Increasing TopNodeAllocFactor=4.09487 new value=5.32333 DOMAIN: Increasing TopNodeAllocFactor=5.32333 new value=6.92033 DOMAIN: NTopleaves=2157, determination of top-level tree involved 18 iterations and took 0.740398 sec DOMAIN: we are going to try at most 296 different settings for combining the domains on tasks=34, nnodes=2 DOMAIN: total_cost=4 total_load=2 DOMAIN: total_cost=4 total_load=2 DOMAIN: total_cost=4 total_load=2 DOMAIN: total_cost=4 total_load=2 DOMAIN: best solution found after 4 iterations by task=10 for nextra=6, reaching maximum imbalance of 1.15653|1.16257 DOMAIN: combining multiple-domains took 0.0054998 sec DOMAIN: exchange of 1000000 particles DOMAIN: particle exchange done. (took 5.30099 sec) DOMAIN: domain decomposition done. (took in total 6.05108 sec) PEANO: Begin Peano-Hilbert order... PEANO: done, took 0.0110294 sec. NGBTREE: Ngb-tree construction done. took 0.0440582 sec =4620.97 NTopnodes=2465 NTopleaves=2157 INIT: Setup smoothing lengths. SPH-DENSITY: Begin density calculation. (presently allocated=19.0388 MB) SPH-DENSITY: Ndensities=600000 (task zero has: NumGas=13984, Ndensities=13984)