TDA2PXEVM: How to change SGX Bandwidth limitation

Hi Koji Sato,

Are you looking for limiting the SGX access to DDR to some MBps?

Are you using VisionSDK? 

Thanks

RamPrasad

RamPrasad-san

Thank you for your reply.

>>Are you looking for limiting the SGX access to DDR to some MBps?

Yes. I wanna freely limit it or release it (no limit), for example 2000MBps, 5000MBps...

I am using VisionSDK.

Thanks

Koji  

Hi Koji san,

What is the visionSDK version used?

I referred 3.07 visionSDK. Here there is already a utility function Utils_setBWLimiter() is available to limit the DDR BW.

If you refer this file sample_app/src/common/chain_main_linux.c

GPU is being limited to 1.3GBps with these two instructions.

Utils_setBWLimiter(UTILS_DMM_INITIATOR_ID_GPU_P1, 1000);
Utils_setBWLimiter(UTILS_DMM_INITIATOR_ID_GPU_P2, 1000);

Thanks

RamPrasad

RamPrasad-san

Thank you for the information, but it did not solve our problem.

My VisionSDK version : v03.37.00

and I am using following usecases:

       vision_sdk/apps/src/hlos/adas/src/usecases

I think these usecase files do not refer the file "sample_app/src/common/chain_main_linux.c"

I changed the value "1000" to "2000", but the result was not changed.

How to reflect the BW settings to usecases?

Thanks

Hi Koji san,

Please execute option "p" to get the current DDR BW for all initiators.

If you want to limit DDRBw of GPU, you will have to update you apps limit with same Utility function.

RamPrasad