opencl - nvidia gpu 上的内核真的有超时吗？

Question

寻找为什么我的内核会产生奇怪的错误消息或“0”只有结果的答案我发现了这个 answer在 SO 上提到在 nvidia gpus 上运行的内核有 5 秒的超时？我在谷歌上搜索了 timout，但找不到确认来源或更多信息。

你对它有什么了解？

超时是否会导致运行时间长的内核出现奇怪的行为？

谢谢!

Answer 1

进一步的谷歌搜索在 CUDA_Toolkit_Release_Notes_Linux.txt 中提出了这一点(已知问题):

# Individual GPU program launches are limited to a run time of less than 5 seconds on a GPU with a display attached. Exceeding this time limit usually causes a launch failure reported through the CUDA driver or the CUDA runtime. GPUs without a display attached are not subject to the 5 second runtime restriction. For this reason it is recommended that CUDA be run on a GPU that is NOT attached to a display and does not have the Windows desktop extended onto it. In this case, the system must contain at least one NVIDIA GPU that serves as the primary graphics adapter.

[更新] 此功能的官方名称似乎是“看门狗”。