[gmx-users] odd replica excahnge

[leila salimi]

Dear gromacs users,

I have tried different replica exchanges for my system, like 12, 14. I
found that with 15 replica, I can get 30-40 % ratio of exchanges between
replicas!
When I sumbitted a simulation with 15 replicas, I did not get any result
and I got this error :

ERROR: 0031-725  Failed to exec program mdrun_mpi_d; errno = 2
ERROR: 0031-619  execvp error: No such file or directory
ERROR: 0031-725  Failed to exec program mdrun_mpi_d; errno = 2
ERROR: 0031-619  execvp error: No such file or directory
ERROR: 0031-725  Failed to exec program mdrun_mpi_d; errno = 2
ERROR: 0031-619  execvp error: No such file or directory

I don't have any idea about this error!! It might be beacuse of odd
replicas?!  If yes, I don't know the point that why the number of replicas
should be even.


Kind Regards,
Leila