深色黑板背景上的简洁极简技术示意图，演示 GPU 内核中浮点归约顺序的非确定性。左侧面板：一棵细窄的二叉求和树，标注 'batch=1'，干净…

"Clean minimalist technical diagram on a dark blackboard background, illustrating floating-point reduction-order nondeterminism in GPU kernels. Left panel: a single narrow binary summation tree labeled 'batch=1', clean white chalk lines converging to one glowing dot, deterministic. Right panel: a wide parallel reduction tree labeled 'batch=8', branches reordered and colliding, two output nodes glowing slightly different shades of orange to show divergence. Thin blue and yellow chalk accent lines, small annotation arrows, infographic vector-illustration style, high contrast, no readable text/logos, engineering-whiteboard aesthetic"

Recipe: Flux 2 dev + Turbo LoRA · 1536x864 · seed 3337244318830348490 · 8 steps — local on the 5090, $0.