cd /path/to/CASE
tar xvf water_GMX50_bare.tar.gz
cd water-cut1.0_GMX50_bare/0768
gmx_mpi grompp -f pme.mdp
ll topol.tpr
-rw-r--r-- 1 root root 18448672 Jan 11 16:41 topol.tpr
mpirun --allow-run-as-root --mca btl ^openib -np 96 gmx_mpi mdrun -dlb yes -v -nsteps 10000 -resethway -noconfout -pin on -ntomp 1 -s topol.tpr
需要查看日志文件md.log中的“Performance”中的“ns/day”数值,单位是“ns/day”,数值越高性能越优。
测试结果样例如下信息所示。
Part of the total run time spent waiting due to load imbalance: 1.1%. Steps where the load balancing was limited by -rdd, -rcon and/or -dds: X 0 % Y 0 % Average PME mesh/force load: 1.033 Part of the total run time spent waiting due to PP/PME imbalance: 2.1 % Core t (s) Wall t (s) (%) Time: 14806.100 154.231 9600.0 (ns/day) (hour/ns) Performance: 5.603 4.283 GROMACS reminds you: "Come on boys, Let's push it hard" (P.J. Harvey)