Re: [gmx-users] Reproducibility in free energy calculations.

2014-04-19 Thread Justin Lemkul
On 4/19/14, 1:16 AM, sujithkakkat . wrote: Hello Justin, I tried the free energy calculations in your tutorial at different sets of conditions. Also I repeated a simulation at the same conditions with same parameters, thrice on the same computer on same number of processors. The results

Re: [gmx-users] Reproducibility in free energy calculations.

2014-04-19 Thread Michael Shirts
Mean of the three calculations is 4.35, standard error is 0.19. So this seems statistically consistent. If you want to get more consistent results, you'll need to run longer until the estimated statistical uncertainty is lower. Also, the estimated uncertainty is often an underestimate (BAR

[gmx-users] Reproducibility in free energy calculations.

2014-04-18 Thread sujithkakkat .
Hello Justin, I tried the free energy calculations in your tutorial at different sets of conditions. Also I repeated a simulation at the same conditions with same parameters, thrice on the same computer on same number of processors. The results in the three cases where different (4.16 +/- 0.19