In parallel-scale.sh mdtest_nFiles is set on lines 69-71

mdtest_nFiles=${mdtest_nFiles:-"100000"}

1. We devide the files by number of core
   mdtest_nFiles=$((mdtest_nFiles/mdtest_THREADS/num_clients))
   ------
   However, this is duplicated in functions.sh run_mdtest() lines 415-417
   -------

mdtest_nFiles=${mdtest_nFiles:-"100000"}

1. We devide the files by number of core
   mdtest_nFiles=$((mdtest_nFiles/mdtest_THREADS/num_clients))
   —

Result: test attempts to use mdtest_nFiles/mdtest_THREADS/num_clients/num_clients - number of files is too small