Select a computation device without hiding fallback — cuda_select

"auto" may select CPU when CUDA is unavailable and records why. Explicit "cuda" is strict: it signals a cudaverse_cuda_unavailable error instead of silently falling back.

Usage

cuda_select_device(device = c("auto", "cuda", "cpu"))

Arguments

device: Requested device: "auto", "cuda", or "cpu".

Value

A named cuda_device_selection list containing the original request, selected device, selection reason, fallback flag, and diagnostics.

Examples

cuda_select_device("cpu")
#> <cuda_device_selection requested=cpu selected=cpu backend=base reason=explicit_cpu fallback=FALSE>
cuda_select_device("auto")
#> <cuda_device_selection requested=auto selected=cpu backend=base reason=backend_error fallback=TRUE>