pub fn device_compute_capability_of(ordinal: usize) -> Result<(u32, u32)>Expand description
2026-09-25: (major, minor) compute capability of GPU ordinal, with no
current context needed on the calling thread.
The preflight needs this form. cuda_host::host creates the context only
on its first call; later calls return the existing host and leave the
calling thread’s current context alone. A later load can run on another
thread (the TUI’s metrale-swap thread, tui/lib_state.rs), where a
context-addressed query has no context to read. The ignored GPU test
the_real_preflight_runs_on_a_thread_that_did_not_make_the_host checks
this form on such a thread.