Hi all,<br><br>I am trying to run GB model simulation of a small protein. I keep getting these errors for every step printed to the log file.<br><br clear="all">DD  load balancing is limited by minimum cell size in dimension X<br>
DD  step 35999  vol min/aver 0.799! load imb.: force 154.9%<br><br>Below i copied my mdp parameters. I&#39;d appreciate any suggestion to help me fix this.<br><br>Thanks,<br>Nihal<br>
<br><br>integrator               = sd<br>tinit                    = 0<br>dt                       = 0.002<br>nsteps                   = 5000000<br>simulation_part          = 1<br>init_step                = 1 %start from 5ns<br>
<br><br>nstxout                  = 5000<br>nstvout                  = 5000<br>nstenergy                = 500<br>nstxtcout                = 500<br>nstlog                   = 500<br><br>xtc_grps                 = System<br>
energygrps               = System<br>comm_mode                = Linear<br>; neighbor searching and vdw/pme setting up<br>nstlist                  = 10<br>ns_type                  = grid<br>pbc                      = xyz<br>
rlist                    = 2.0<br><br>coulombtype              = pme<br>fourierspacing           = 0.1<br>pme_order                = 6<br>rcoulomb                 = 2.0<br><br>vdwtype                  = Cut-off<br>rvdw_switch              = 1.0<br>
rvdw                     = 2.0<br><br>; cpt control<br>tcoupl                   = Berendsen<br>tc-grps                  = System<br>tau_t                    = 0.1<br>ref_t                    = 300.0<br>Pcoupl                   = Berendsen<br>
pcoupltype               = isotropic<br>tau_p                    = 1.0<br>compressibility          = 4.5e-5<br>ref_p                    = 1.0<br><br>; velocity &amp; temperature control<br>gen_vel                  = yes<br>
gen_temp                 = 300.0<br>annealing                = no<br>constraints              = hbonds<br>constraint_algorithm     = lincs<br>morse                    = no<br><br><br>-- <br>Elif Nihal Korkmaz<br><br>Research Assistant <br>
University of Wisconsin - Biophysics <br>Member of Qiang Cui &amp; Thomas Record Labs<br>1101 University Ave, Rm. 8359<br>
Madison, WI 53706<br>
Phone:  608-265-3644<br>
Email:   <a href="mailto:korkmaz@wisc.edu" target="_blank">korkmaz@wisc.edu</a><br><br><br>