1BRC on a Threadripper 9980X

Yesterday I published some benchmarks of Hardwood 1.0 on my Threadripper. Someone suggested I run the One Billion Row Challenge too, to see how it does, so here it is!Gunnar Morling ran the original benchmarks on an EPYC 7502P, Zen 2, 32 cores with 128 GB of RAM. The official challenge was on 8 cores (sequentially chosen) plus a bonus of all 32 cores.I chose to run the benchmark using 9 contenders from the published 8 and 32 core results. The 9 contenders I ran were thomaswue, artsiomkorzun, jerrinot, serkan-ozal, abeobk, stephenvonworley, royvanrijn, mtopolnik, yavuztas.Threadripper 9980X vs EPYC 7502PBefore we go through the results, let’s compare these two machines.Hertzner AX161 (EPYC 7502P, Zen 2): 32 cores / 64 threads128 GB ECC DDR4RAM disk configured for 1BRCThreadripper 9980X (Zen 5):64 cores / 128 threads256 GB ECC DDR5 CL52 (with some minor secondary timing tweaks)Samsung 9100 PRO, 8TB (no RAM disk)Cooling: Silverstone XE360-TR + RAM cooling fansSMT disabledCPU Monkey…