tagged · 2 articles

performance

2026

Ten thousand series, one pass
Ten thousand series, a thousand replicates each, and the naive tensor wants 16 GB before the first statistic lands. This is the real race: three implementations, two axes, and each speedup credited to the opponent it actually outran.
Jul 15, 2026
2026

Count the bytes, not the FLOPs
Why tsbootstrap stopped materializing arrays and carrying state. A routine bootstrap job can materialize a 160 MB tensor whose only purpose is to be averaged and thrown away. How tsbootstrap's hot path stopped building it, including the one path where the incumbent still wins.
Jul 11, 2026