runApplication - Launch an application on the NVIDIA target by name - MATLAB (original) (raw)

Main Content

Launch an application on the NVIDIA target by name

Syntax

Description

[procID](#mw%5Fe1079f78-3591-45f8-b06f-7f4a738d9005) = runApplication([hwObj](#mw%5F5456a7bf-36ac-4649-beb7-b19b8fc3a438%5Fsep%5Fmw%5Fbcc65819-faa5-4997-9bca-35a8da7d894a),[exeName](#mw%5F68c33bab-f89d-4092-89fd-e9a630b2e5cf)) launches the application (executable) specified by exeName on the NVIDIA® target board desktop.

example

[procID](#mw%5Fe1079f78-3591-45f8-b06f-7f4a738d9005) = runApplication(___,[exeArgs](#mw%5Fe85e489e-1089-406b-bdb2-90cea7d66a0e)) launches the application specified by exeName on the NVIDIA target board desktop. exeArgs is used to specify run-time arguments to the application.

[procID](#mw%5Fe1079f78-3591-45f8-b06f-7f4a738d9005) = runApplication(___,[exePath](#mw%5Fc2b073dd-c47b-45ba-81df-de2b88d68ffb)) launches the application specified by exeName on the NVIDIA target board desktop. exePath is used to explicitly specify the location of the application.

Examples

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This example shows how to launch an application on the NVIDIA Jetson™ TX2 target. This example requires a USB camera connected to the NVIDIA target.

Create a live hardware connection from the MATLAB® software to the NVIDIA hardware by using the jetson function. To create a live hardware connection object, provide the host name or IP address, user name, and password of the target board. For example:

hwobj = jetson('jetson-board-name','ubuntu','ubuntu');

Create a MATLAB function liveCapture.m that connects to the webcam on a Jetson TX2 board and displays the image on the board. This function acts as the_entry-point_ for code generation.

function liveCapture() %#codegen

% To enable code generation for hardware interfaces hwobj = jetson; w = webcam(hwobj,1,'1280x800'); d = imageDisplay(hwobj);

for k = 1:2000 % Capture the image from the webcam on hardware. img = snapshot(w); % Display image. image(d,img); end

Create a GPU code configuration object for generating an executable. Use thecoder.hardware function to create a configuration object for the Jetson platform and assign it to the Hardware property of the code configuration object cfg.

cfg = coder.gpuConfig('exe'); cfg.GenerateReport = true; cfg.Hardware = coder.hardware('NVIDIA Jetson'); cfg.CustomInclude = fullfile('codegen','exe','liveCapture','examples'); cfg.CustomSource = fullfile('codegen','exe','liveCapture','examples','main.cu');

The main.cu file is generated as part of code generation process. For this example, you can use this file without modification.

To generate CUDA® code, use the codegen command and pass the GPU code configuration object along with the liveCapture entry-point function. After the code generation takes place on the host, the generated files are copied over and built on the target.

codegen -config cfg liveCapture

Use the runApplication function to launch the executable on the TX2 board.

procID = runApplication(hwobj,'liveCapture');

Launching the executable on the target...

Executable launched successfully with process ID 12821. Displaying the simple runtime log for the executable...

Input Arguments

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Connection to a specific NVIDIA hardware board, specified as a jetson or drive object.

Specify the name of the application to run on the NVIDIA target desktop.

Example: 'liveCapture.elf'

Specify the runtime arguments to the application.

Example: 'camVid.avi'

Specify the path to the application on the NVIDIA board. If a value is not specified, the software uses theworkspaceDir property of the jetson ordrive object to determine the standard location of the application.

Example: '/home/ubuntu/myLiveEdgeDetect/MATLAB_ws/R2019a/home/gpucoder/myLiveEdgeDetection'

Output Arguments

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The process ID of the application launched on the NVIDIA target.

Example: 12821

Version History

Introduced in R2019a

See Also

Functions

Objects

Topics