1BRC on a Threadripper 9980X

esterday 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…