Thanks! Mark. I got solution to my problem. For my system, setting pinoffset = 0, 16 and pinstride = 1 for two simultaneous simulations gave much satisfactory performance both for Verlet and Group cutoff-scheme. I tried it for 4 simultaneous simulations also with pinoffset = 0, 8, 16, 24 and pinstride = 1 , and it works!!
Command: mdrun -nt 16 -v -pin on -pinoffset 0 -pinstride 1 -deffnm file & mdrun -nt 16 -v -pin on -pinoffset 16 -pinstride 1 -deffnm file & Group: 21.559+21.879 = 43.348 ns/day Verlet: 20+20.293 = 40.293 ns/day Richa. -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists