Oh I didn’t mean per attempt. If you have <= 16 cores, just wrap the first level loop body in a goroutine; if you have >16 cores, wrap the second level to spawn

Oh I didn’t mean per attempt. If you have <= 16 cores, just wrap the first level loop body in a goroutine; if you have >16 cores, wrap the second level to spawn 256 goroutines. Very little code change, big speedup.