Ubuntu, latest LTS.

I bought the machine for this purpose. Guessing it was sufficiently similar to the machines running the benchmarks where I stumbled across the issue: https://plummerssoftwarellc.github.io/PrimeView/?rc=30&sc=dt...

Every run passed through a different core.

  0 - Passes: 5970, count: 78498, Valid: true
  1 - Passes: 5768, count: 78498, Valid: true
  2 - Passes: 5763, count: 78498, Valid: true
  3 - Passes: 5762, count: 78498, Valid: true
  4 - Passes: 5812, count: 78498, Valid: true
  5 - Passes: 5743, count: 78498, Valid: true
  6 - Passes: 5721, count: 78498, Valid: true
  7 - Passes: 5737, count: 78498, Valid: true
  8 - Passes: 5754, count: 78498, Valid: true
  9 - Passes: 5768, count: 78498, Valid: true