[bug] Python - Cuda error (without using Cuda) about xgboost HOT 5 OPEN

That makes sense, I will open a PR to workaround that. It's just XGBoost needs to know whether the data is from GPU or CPU, and we use CUDA runtime to obtain this information. As a result, there's a CUDA error when checking the input data.

from xgboost.

Haven't been able to reproduce with CUDA 12.3, trying 12.4 now.

from xgboost.

Still haven't reproduced it.

from xgboost.

That's odd, how come that getting the last error is cudaErrorMemoryAllocation.

Except for debian v.s. ubuntu, I have pretty much the same configuration:

OS: Debian 12, with Nvidia drivers 550.54.15  and Cuda 12.4
Hardware: RTX 4000 series card present

from xgboost.

Apparently, there was another process using my GPU, specifically utilizing almost the entire VRam. After closing such application, the example above works.
Nevertheless, I don't know if it should be considered a bug that any xgboost (even CPU-based) application crashes due to issues on the Cuda layer.

from xgboost.