RuntimeError: CUDA error: device-side assert triggered

This error occurs when there is an assertion failure on the device side of the CUDA program. An assertion failure means that a condition that was expected to be true has been found to be false. This is usually caused by a programming error, such as accessing an out-of-bounds memory location or using an invalid kernel argument.

To diagnose this error, you can try running your program with CUDA error checking enabled. This will provide more detailed error messages that can help you pinpoint the source of the problem. You can enable CUDA error checking by setting the CUDA_CHECK_ERROR environment variable to 1 before running your program.

Additionally, you can try reducing the size of your input data or modifying your program to use less memory or computation. This can help to avoid memory access errors or other issues that can lead to assertion failures.

If you are still unable to resolve the issue, you may need to consult the CUDA documentation or seek assistance from the CUDA community.