I have first perform molecular dynamics simulation on C20 with 1000K initial temperature and 0.3ps total time duration and then using this final structure to perform annealing simulation with 1000K and 0.5ps with rescaling. But the structure after annealing is just some almost unseeable small points showing in Jmol. What is happening? Is there any thing wrong with my simulation?

I have first perform molecular dynamics simulation on C20 with 1000K initial temperature and 0.3ps total time duration and then using this final structure to perform annealing simulation with 1000K and 0.5ps with rescaling. But the structure after annealing is just some almost unseeable small points showing in Jmol. What is happening? Is there any thing wrong with my simulation?