The fpu command tests one or more floating-point units (FPUs) in x64 processors.
udiag fpu { -ap <n> [/<n>]* | -np <n> | -np all }
ANY_PROC; MULTIPLE_INSTANCES
To run the test on the boot strap processor (BSP), type:
fs0:/> udiag fpu
To run the test on all application processors 10 (hex) times, type:
fs0:/> udiag fpu -np all -pc 10