5 · Serve and the GPU lie · 30/38

The lie

100% util, 3% of peak. GEMM vs decode.

play
nvidia-smi · utilization
—
the SMs it touches really are busy
achieved · % of peak FLOP/s
—
how much of the machine does real math

Utilization means a kernel was resident. Achieved is the fraction of peak FLOP/s.