hipFile environment variables

The following environment variables affect the hipFile runtime.

Environment variable	Values
HIPFILE_ALLOW_COMPAT_MODE	Controls whether device-memory I/O that can’t use the direct-to-GPU fastpath uses fallback I/O. When HIPFILE_FORCE_COMPAT_MODE is true and HIPFILE_ALLOW_COMPAT_MODE is false, I/O fails. true: Use fallback I/O when fastpath can’t be used. (default) false: I/O that can’t use fastpath fails.
HIPFILE_FORCE_COMPAT_MODE	Forces the use of fallback I/O without attempting to use fastpath. true: Always use fallback I/O. false: Use fastpath when possible. (default)
HIPFILE_STATS_LEVEL	Controls how much information hipFile collects for the ais-stats tool. 0: Histogram recording is disabled. 1: Collect per-GPU and per-backend bandwidth, latency, and error histograms. (default)
HIPFILE_UNSUPPORTED_FILE_SYSTEMS	Controls whether fastpath is used with unsupported file systems. true: Fastpath is used with any file system without validation. false: Fastpath is only used with supported file systems. (default)