5.3. Directed loop algorithm solvers, dla_H and dla_B

dla_H and dla_B are quantum Monte Carlo solvers with the directed loop algorithm. They take an input file as the command line argument. dla_H is for spin system and dla_B is for Bosonic system.

$ dla_H param.in

DSQSS/DLA implements random number parallelization by using MPI. Since each process performs NSET Monte Carlo calculation independently, the total number of MC sets increases \(N_\text{process}\) and thus it is expected that the statistical error also reduces to \(1/\sqrt{N_\text{process}}\) times.

$ mpiexec -np 4 dla_B param.in