I think its not reading the number of cores right

[Saint Michael]

My command line is
parallel --gnu --no-run-if-empty -k --lb -j-5 --colsep ' '  processx "{1}
{#}" :::: ${FILE}
and the file has 100.000 lines
my box has 44 cores, minus 5, I should see 39 processes, but using ps ax |
grep bash, I see only 10.
How do I know how many cores parallel is seeing?