neon on imx8m mini

[greeran]

hi. i am writing an application on the imx8mm that needs to copy video frames. As for now i use memcpy. the cpu usage is not high but the latency creates drop packets. is there a way to compile my application with using the NEON to vectorize the copy. i tried to compile with neon flags but all fail. does the imx8mm support neon compilations.

thanks

[BenjaminKao]

Hello

I also need to use NEON to accelerate my c++ program on iMX8M mini. In my case, it's only need to include the noen header by

#include <arm_neon.h>

and compile it without -mfpu=neon, then the program works!

I use vmulq_f32 and vmlaq_f32 in the program, and the speed indeed runs faster, the answer is also correct.

Maybe this will help you.

[Bio_TICFSL]

Hello greeran,

The i.MX8M don't have NEON on its architecture, for use neon you will have to use the MX6Q.

Regards

[greeran]

hi

thanks for the reply but i am a little confused. from the imx8mm datasheet (https://www.nxp.com/docs/en/data-sheet/IMX8MMCEC.pdf) from the nxp site i see that the a53 comes with neon by default 

"Media Processing Engine (MPE) with NEON technology supporting the Advanced
Single Instruction Multiple Data architecture:"

am i missing something 

thanks

[greeran]

hi

thanks for the reply but i am a little confused. from the imx8mm datasheet (https://www.nxp.com/docs/en/data-sheet/IMX8MMCEC.pdf) from the nxp site i see that the a53 comes with neon by default 

"Media Processing Engine (MPE) with NEON technology supporting the Advanced
Single Instruction Multiple Data architecture:"

am i missing something 

thanks