$ gt tallymer mkindex -scan -mersize 19 -minocc 4 -indexname tyr-reads -counts -pl -esa reads
# construct mer buckets for prefixlength 4
# numofcodes = 256
# indexfilename = tyr-reads
# alphasize = 4
# mersize = 19
# numofmers = 3166
# merbytes = 5
# space peak in megabytes: 0.06
# mmap space peak in megabytes: 3.93
