Filename format
ior.out.<number of clients>.<stripe>.<filesystem>
ior.out.1.32.scratch1 ior.out.1.47.scratch1 ior.out.1.56.scratch1 ior.out.1.2.scratch1 ior.out.1.4.scratch1 ior.out.1.8.scratch1 ior.out.1.16.scratch1 ior.out.1.24.scratch1