GPU interrupt affinity

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,

We have two NVIDIA GPUS: Quadro K2200 and GRID K1 and want to set the interrupt affinity for them.
We obtained the IRQ information through /proc/driver/nvidia/gpus/*/information and tried to set the affinity in /proc/irq/109/smp_affinity. However, we failed on both GPUs with the following error from echo:
input/output error.

The GPU’s interrupt is not displayed in /proc/interrupt and dmesg shows:
nvidia 0000:41:00.0: irq 109 for MSI/MSI-X

Thanks in advance!
Yun.