Nucmer can only call ten threads

[mrwangyz]

I use nucmer to compare the genomes of two corns, but no matter how much I set “-t”， it can only call ten threads.
Below is my code, I tried both，
nucmer --maxmatch -c 500 -b 500 -l 200 -g 1000 A.fa B.fa --delta=./A-B.delta --threads=60
nucmer -t 60 --maxmatch -c 500 -b 500 -l 200 -g 1000 A.fa B.fa --delta=./A-B.delta

[gmarcais]

How many sequences are in the input fasta files? Parallelism at this point is only "coarse grain", done at the level of sequences.

[mrwangyz]

How many sequences are in the input fasta files? Parallelism at this point is only "coarse grain", done at the level of sequences.

Thank you, I understand, my sequence has only ten chromosomes, so only ten cores are called.
So does this mean that I can't complete my comparison faster by using more cores?