I test the code from https://github.com/McDo/PSROIAlign-Multi-Batch-PyTorch 3 in example.py,
and find it always end up with cudaCheckError() failed : invalid device function. The error info comes from line 124 of PSROIPool_cuda.cu. After several tries, I find the reason why it comes with such error is that I have added a new different GPU before creating new Ananconda env for pytorch. The details are follows:

two 1080Ti GPU on my workstation, creating Anaconda env test_1
using a Titan V GPU to replace one 1080Ti GPU. Now, one 1080Ti and one Titan V on my workstation. Create Anaconda env test_2
Encounter  cudaCheckError() failed : invalid device function   when using Anaconda env test_2. No error when using Anaconda env test_1

Guess: The pytorch would do some specific thing related with GPU when installing, and may have something wrong when there have two different GPU cards on workstation.