08:23
2026-09-09
dev.to
ai-chips
Inside SFPU Overflow Bugs: How a 40-Year-Old Rounding Trick Breaks on Modern AI Accelerators
Tenstorrent's Blackhole and Wormhole AI accelerators return infinity or NaN for large negative inputs to the softplus activation function due to an unclamped range-reduction step in the SFPU (Scalar FâŚ