1e7 testing
vr_pdl3: 46.328s cache
vr_pdl2: 1m16.058s non-cache
mce_pdl2: 1m15.583s chunk_size => $size
mce_pdl2: 1m03.709s chunk_size => $size >> 1
mce_pdl2: 52.352s chunk_size => $size >> 2
mce_pdl2: 51.323s chunk_size => $size >> 3
mce_pdl2: 49.396s chunk_size => $size >> 4
mce_pdl2: 48.195s chunk_size => $size >> 5
mce_pdl2: 48.369s chunk_size => $size >> 6
mce_pdl2: 48.501s chunk_size => $size >> 7
chunk_size => 300000
mce_pdl2: 48.195s 1 core
mce_pdl2: 25.311s 2 cores
mce_pdl2: 14.085s 4 cores
mce_pdl2: 7.650s 8 cores
mce_pdl2: 4.517s 16 cores
mce_pdl2: 3.721s 32 cores
chunk_size => 100000
mce_pdl2: 48.395s 1 core
mce_pdl2: 25.402s 2 cores
mce_pdl2: 13.163s 4 cores
mce_pdl2: 6.860s 8 cores
mce_pdl2: 3.850s 16 cores
mce_pdl2: 2.347s 32 cores
Output
Collatz(8400511) has sequence length of 686 steps
Collatz(8865705) has sequence length of 668 steps
Collatz(6649279) has sequence length of 665 steps
Collatz(9973919) has sequence length of 663 steps
Collatz(6674175) has sequence length of 621 steps
Collatz(7332399) has sequence length of 616 steps
Collatz(7532665) has sequence length of 616 steps
Collatz(5649499) has sequence length of 613 steps
Collatz(8474249) has sequence length of 611 steps
Collatz(6355687) has sequence length of 608 steps
Collatz(8847225) has sequence length of 606 steps
Collatz(9533531) has sequence length of 606 steps
Collatz(6635419) has sequence length of 603 steps
Collatz(9953129) has sequence length of 601 steps
Collatz(7464846) has sequence length of 598 steps
Collatz(7464847) has sequence length of 598 steps
Collatz(3732423) has sequence length of 597 steps
Collatz(5598635) has sequence length of 595 steps
Collatz(8397953) has sequence length of 593 steps
Collatz(6298465) has sequence length of 590 steps