MIVisionX environment variables

This section describes the most important MIVisionX environment variables, which are grouped by functionality.

Core OpenVX Configuration

The core OpenVX configuration environment variables for MIVisionX are collected in the following table.

Environment variable	Value
AGO_DEFAULT_TARGET Sets the default execution target for OpenVX kernels.	“GPU”: Execute kernels on GPU “CPU”: Execute kernels on CPU Unset: Use library default target
AGO_BUFFER_MERGE_FLAGS Controls buffer merging optimization flags.	Integer bitmask value Higher values: More aggressive merging 0: Disable buffer merging
AGO_THREAD_CONFIG Configures thread usage for CPU execution.	Integer value (likely number of threads) 0: Use default threading Positive integer: Specific thread count
VX_GRAPH_ATTRIBUTE_AMD_OPTIMIZER_FLAGS Sets OpenVX graph optimizer flags for AMD extensions.	Integer bitmask value 0: Disable optimizations Positive values: Enable specific optimizations

GPU and Device Configuration

The GPU and device configuration environment variables for MIVisionX are collected in the following table.

Environment variable	Value
GPU_ENABLE_WGP_MODE Controls Workgroup Processor (WGP) mode on RDNA GPUs that support both CU and WGP modes.	0: Disable WGP mode (use CU mode) 1 or any non-zero: Enable WGP mode (default) Only applies to GPUs with major version >= 10

OpenCL Configuration

The OpenCL configuration environment variables for MIVisionX are collected in the following table.

Environment variable	Value
AGO_OPENCL_PLATFORM Overrides the default OpenCL platform selection.	String specifying OpenCL platform name Used to select specific OpenCL implementation
AGO_OPENCL_VERSION_CHECK Controls OpenCL version checking behavior.	String value controlling version validation May disable or modify version requirements
AGO_OPENCL_BUILD_OPTIONS Specifies additional OpenCL kernel build options.	String containing OpenCL compiler flags Passed to OpenCL kernel compilation
AGO_OPENCL_DEVICE_INFO Controls OpenCL device information reporting.	String value controlling device info output Used for debugging device capabilities

Debugging and Profiling

The debugging and profiling environment variables for MIVisionX are collected in the following table.

Environment variable	Value
AGO_DUMP_GPU Enables GPU kernel dumping for debugging purposes.	String value enabling GPU kernel dump Used for analyzing GPU kernel behavior

Stitching Configuration

The stitching configuration environment variables for MIVisionX are collected in the following table.

Environment variable	Value
DRAW_SEAM Enables drawing of seam lines for verification in stitching operations.	0: Disable seam drawing (default) 1: Enable seam drawing visualization
SEAM_ADJUST Controls seam adjustment behavior in stitching.	0: Disable seam adjustment (default) 1: Enable dynamic seam adjustment
PRINT_COST Enables printing of cost calculations during seam finding.	0: Disable cost printing (default) 1: Print cost matrix values for debugging
SEAM_FIND_TARGET Sets the target method for seam finding algorithms.	Integer value (algorithm selector) Different values select different seam finding methods
VIEW_SCENE_CHANGE Controls view scene change detection behavior.	0: Disable scene change detection 1: Enable scene change detection Higher values: More sensitive detection
SEAM_THRESHOLD Sets threshold value for seam detection algorithms.	Integer value (0-255 typical range) Lower values: More sensitive seam detection Higher values: Less sensitive seam detection
SCENE_DURATION Sets duration for scene analysis in stitching.	Integer value (likely in frames or milliseconds) Controls temporal window for scene analysis
SEAM_FREQUENCY Controls frequency of seam finding operations.	Integer value (likely in frames) 1: Find seams every frame Higher values: Find seams less frequently
SEAM_FIND_MODE Sets the operational mode for seam finding algorithms.	Integer value (mode selector) Different values select different seam finding strategies
LOOM_SEAM_FIND_DISABLE Disables seam finding in LOOM stitching operations.	“1”: Disable seam finding “0” or unset: Enable seam finding

Chroma Key Configuration

The chroma key configuration environment variables for MIVisionX are collected in the following table.

Environment variable	Value
CHROMAKEY_MASK Controls chroma key masking behavior.	Integer value specifying chroma key mask settings Used for green screen/chroma key operations
CHROMAKEY_MERGE Controls chroma key merging operations.	Integer value specifying chroma key merge settings Controls how chroma key layers are combined

File I/O and Auxiliary Operations

The file I/O and auxiliary operation environment variables for MIVisionX are collected in the following table.

Environment variable	Value
LOOMIO_AUX_DUMP Specifies file path for auxiliary LOOM I/O data dumping.	String path to dump file Enables debugging of LOOM I/O operations

Model Deployment

The model deployment environment variables for MIVisionX are collected in the following table.

Environment variable	Value
MIVISIONX_MODEL_COMPILER_PATH Overrides the default path to the MIVisionX model compiler.	String path to model compiler executable Default: “/opt/rocm/libexec/mivisionx/model_compiler”

Neural Network Configuration

The neural network configuration environment variables for MIVisionX are collected in the following table.

Environment variable	Value
NN_MIOPEN_CBR_MODE Controls MIOpen Convolution-BatchNorm-ReLU fusion mode for neural networks.	Integer value specifying CBR mode Default: 1 (enabled) Controls operator fusion optimization