[cuda] CUDA warp level intrinsics failed on legacy GPU

[0xzhang]

Related PR is #4927. I shared the full error info on Gist.
It seems test_simt.py not testable on my PC.

• GeForce GTX 1650
• CUDA 11.4

I use command below.

python tests/run_tests.py -t1 -k test_simt

Warp functions have requirements to compute capability of device. Maybe my card doesn't have enough compute capability according the list.

If taichi could capture this problem in advance would be even better.

[ailzhang]

Hey @0xzhang , thanks for reporting the issue! FYI @qiao-bo is OOO this week, so please expect a delay in his reply ;) Thanks a lot!

[0xzhang]

Hey @0xzhang , thanks for reporting the issue! FYI @qiao-bo is OOO this week, so please expect a delay in his reply ;) Thanks a lot!

Thank you for telling me. You are welcome! 😄

[qiao-bo]

Hi, sorry for my late reply. We should indeed detect this in advance by inspecting the GPU CC, we will fix this.

[qiao-bo]

This should be fixed by 5077. Feel free to reopen if you encounter further problem.

[0xzhang]

This should be fixed by 5077. Feel free to reopen if you encounter further problem.

Thanks!