RTOS/TDA2EVM5777: SYNC DELTA and SYNC THRESHOLD Calculation

Madhav Chamle

Part Number: TDA2EVM5777

Tool/software: TI-RTOS

Dear Sir

I am having caffe-custom OD model . We have model input as 512x512 image we are providing input video at 30fps to run the use case. After setting SYNC_DELTA to 1000 and SYNC_THRESHOLD to any of [1000 or 5000 or 10000] only we are getting detentions .

When sync_delta is < 1000 we are facing frame drops in VPE link and no detection.

Could you please tell how to set optimal value for our model ?

What is the relation of sync_delta with src timestamp set for each CH ? Where to set source time stamp in code ?

How to achieve no frame drops with lowest latency from TI link for best model performance(FPS) ?

Thanks

Madhav

over 6 years ago

0 Anuj Gupta over 6 years ago

TI__Genius 15985 points

Hi,

Src timestamp is set by the source link,

You do not need to worry about that.

Sync threshold is the time using which sync link takes that decision to drop a frame or not.

If you set this high then frame drop will be low.

You need to check the link latency of tidl link running on EVE and dsp and add that keep somwhere 1.5 times of that as sync threshold.

Regards,

Anuj

0 Anuj Gupta over 6 years ago in reply to Anuj Gupta

TI__Genius 15985 points

Hi,

Its been long since any update on this thread.

I hope the issue is resolved.

Regards,

Anuj

Processors

Processors forum

RTOS/TDA2EVM5777: SYNC DELTA and SYNC THRESHOLD Calculation