Environment Variables

Kernel Launcher recognizes the following environment variables:

Key	Default	Description
KERNEL_LAUNCHER_CAPTURE	_	Kernels for which a tuning specification will be captured. The value should a comma-seperated list of kernel names. Additionally, an * can be used as a wild card. Examples: foo,bar: matches kernels foo and bar. vector_*: matches kernels that start with vector. *_matrix_*: matches kernels that contains matrix. *: matches all kernels.
KERNEL_LAUNCHER_CAPTURE _FORCE	_	Same as the previous variable. However, while KERNEL_LAUNCHER_CAPTURE skips kernels that have already been tuned (i.e., a wisdom file was found), the KERNEL_LAUNCHER_CAPTURE_FORCE will force to always capture kernels regardless of whether wisdom files are available.
KERNEL_LAUNCHER_CAPTURE _SKIP	0	Set the number of kernel launches to skip before capturing a particular kernel. For example, if you set the value to 3, only the fourth launch will be captured since the first three launches will be skipped. Note that this option is applied on a per-kernel basis, which means that each individual kernel keeps its own skip counter.
KERNEL_LAUNCHER_LOG	info	Controls how much logging information is printed to stderr. There are three possible options: debug: Everything is logged. info: Only warnings and high-level information is logged. warn: Only warnings are logged.
KERNEL_LAUNCHER_DIR	.	The directory were the tuning specifications will be stored. Defaults to the current working directory.
KERNEL_LAUNCHER_WISDOM	.	The default directory where wisdom files are located. Defaults to the current working directory.
KERNEL_LAUNCHER_INCLUDE	.	List of comma-seperate directories that are considered while compiling kernels when searching for header files.