How to use OpenCL on iMX8MQEVK

[shengkunning]

Dear NXP,

I had built image and SDK for iMX8MQEVK successfully. But I cannot find out anything
about OpenCL, such as libOpenCL.so or cl.h

Could you kindly point out how to use OpenCL on iMX8MQEVK ?

The method that I built Yocto L4.14.98 for iMX8MQEVK is listed as following:

$ repo init -u https://source.codeaurora.org/external/imx/imx-manifest -b imx-linux-sumo -m imx-4.14.98-2.0.0_ga.xml
$ repo sync
$ EULA=1 DISTRO=fsl-imx-xwayland MACHINE=imx8mqevk source fsl-setup-release.sh -b build
$ bitbake fsl-image-validation-imx
$ bitbake meta-toolchain

Thanks~

[AndreSilva]

Hi, I believe this minimal image you built doesn't include some drivers, I suggest you to build the full image, you can follow this tutorial:

https://imxcv.blogspot.com/2020/05/creating-opencl-demo-application-using.html

just don't forget to change the target's name.

Cheers,

Andre

[joanxie]

for imx8mq, you can use softISP to test OpenCL, the path is:

/opt/imx-gpu-sdk/openCL

[shengkunning]

Dear joanxie,

Thanks for your help.
I find the test program "OpenCL/SoftISP" following your suggestion,
and it can run normally on iMX8MQEVK.

But now I'm not clear about how does this program use OpenCL.
Because as far as I know, if we write our own application,
the program should include "cl.h" or "OpenCL.h" and link "libOpenCL.so".

However I do not find these header files and lib file.

If my understanding is wrong, please correct me.

And I do not find the source code of "OpenCL/SoftISP", so I'm not sure
about how to use GPU in our own application via OpenCL.

Could you please provide more suggestion for our own application to use
OpenCL?

Thanks ~

[joanxie · Accepted solution]

you can find softISP source code from:

"https://github.com/NXPmicro/gtec-demo-framework/tree/master/DemoApps/OpenCL/SoftISP/source"

[shengkunning]

Thank you very much ~