Return the amatrix backend fallback log

The fallback log records every runtime fall-through from a preferred backend to the CPU reference path. A non-empty log after a clean conformance run is a stop-ship condition: it means a backend claimed support for an op it cannot actually execute, so the result silently came from a different backend than the one that was requested.

Usage

amatrix_fallback_log()

Value

A data.frame with columns timestamp, op, from_backend, to_backend, reason. Zero rows means no fallbacks have been recorded.

See also

amatrix_fallback_log_reset, amatrix_backend_health_probe

Examples

amatrix_fallback_log()
#> [1] timestamp    op           from_backend to_backend   reason      
#> <0 rows> (or 0-length row.names)
amatrix_fallback_log_reset()