[gmx-users] necessity of energy minimization

[Gmx Niki]

Hi All,
 
when I run energy minimization the system gives error, and broke up. it has error about steep integrator and says tha: "steepest time is too small".
but the system is running by MD integrator without any em step). is the energy minimization necessary to all cases? for example in DL_POL software we dont have  enegy minimization , seperately. is it correct that I start simulation steps by md integrator and NVT ensemble?
 
tnx
Niki