See the discussion here https://github.com/openjdk/jdk/pull/22963#discussion_r1954358833

notes from [~jbhateja]. we'd better refactor this jmh test.

```
By making the index hop over 16 ints or 8 longs we may leave gaps in between for 128-bit and 256-bit species, this will unnecessarily include the noise due to cache misses or (on some targets) prefetching additional cache lines which are not usable, thereby impacting the crispness of microbenchmark.
```