result.txt

格子Boltzmann方法 格子Boltzmann方法是为了保留格子气自动机方法的优点

[gcc@cn68 lbm_d2q9]$ lbm
    bdy.lbm    60x30 steps:5000
CPU_time: 6.480000(s)


[gcc@cn68 lbm_d2q9]$mpirun -machinefile hosts -np 4
    bdy.lbm    60x30 steps:5000
Process 0 of 4 on cn68, tc=1.970000, tw=4.396115
Process 1 of 4 on cn69, tc=1.890000, tw=4.396220
Process 3 of 4 on cn70, tc=1.820000, tw=4.396434
Process 2 of 4 on cn67, tc=1.920000, tw=4.396470
Sum_CPU_time = 7.600000, Max_WALL_time = 4.396470
Sum_CPU_time/Max_WALL_time = 1.728660

[gcc@cn68 mpi_lbm]$mpirun -machinefile hosts -np 4 mpi_lbm bdy600x300.lbm
    bdy600x300    600x300 steps:5000
Process 3 of 4 on cn70, tc=169.700000, tw=230.909462
Process 2 of 4 on cn67, tc=172.660000, tw=230.920375
Process 0 of 4 on cn68, tc=228.430000, tw=230.931100
Process 1 of 4 on cn69, tc=172.450000, tw=230.932280
Sum_CPU_time = 743.240000, Max_WALL_time = 230.932280
Sum_CPU_time/Max_WALL_time = 3.218433