Convergence test of -dx option in emc2

Alloy Theoretic Automated Toolkit (ATAT)
1

Dear ATAT experts,
I would like to know how to optimize the value of -dx option in Easy Monte Carlo Code (emc2) in order to converge the results. For example, I ran emc2 for a range of -dx values but could not observe a variation trend either in the variance of the concentration or in that of the energy. In contrast, the variance of the concentration clearly converged with -er.
Regards,
Mohammed A. H. Khalafalla (PhD)
Taibah University
Dept of Physics
KSA

2

There is no real need to test convergence with respect to the -dx parameter (unlike the -er parameter). You just give the accuracy you want and the code will run long enough to ensure that the given statistical accuracy is reached.