Use the module spider command to see the available versions of AAF:
module spider AAF
AAF (alignment and assembly-free) is a free software package that reconstructs phylogeny from next-generation sequencing data without assembly and alignment.
It takes raw sequencing reads from each sample altogether and generates a distance matrix based on the proportion of shared k-mers between each sample and reconstruct a phylogeny based on the distance matrix.
If you are running aaf_distance.py with > 10 cores and the command is failing with a message like IndexError: list index out of range then use fewer cores such as -t 5