Table 5.
Results of the MFPT calculations on alanine dipeptide in vacuum with cells placed as on Fig. 9a/b) at temperature 350 K. DiM was performed with 24 cells, MMVT in two different settings: 24 and 63 cells. Standard deviations are in the brackets. Estimation of the exact MFPT was performed by launching five groups of 200 trajectories from C7eq state and running them until Cax state is reached. Standard deviation and average of the MFPT calculated from each group are reported in the table. Total cost for DiM is given as a sum of the simulation time of all trajectories and the simulation time used for preparation of the initial ensemble on each Milestone.
method | MEFP [µs] | total cost [µa] |
---|---|---|
straightforward MD at T = 350 K | 2.05 (0.3) | 410 |
DiM, 5K trajectories/Milestone | 2.78 (0.65) | 2.3 + 1.4 = 3.7 |
DiM, 10K trajectories/Milestone | 1.74 (0.40) | 4.7 + 2.8 = 7.5 |
DiM, 20K trajectories/Milestone | 1.75 (0.33) | 9.4 + 5.6 = 15.0 |
DiM, 60K trajectories/Milestone | 1.77 (0.20) | 28 + 16.8 = 44.8 |
MMVT, 24 cells, 2.00 µs /cell | 69.7 | 48 |
MMVT, 63 cells, 0.75 µs /cell | 3798 | 47 |
MMVT, 63 cells, 2.25 µs /cell | 855 | 142 |