TDA4AL-Q1: Crash when define large array in post process

Ps. The SDK version I am using is ti-processor-sdk-linux-adas-j721s2-evm-10_01_00_04.

Thanks!

Hi Jiemin,

At first glance, this appears to be a memory issue. If you could share the memory map and a test code, I can try to reproduce the issue on my end.

Regards,
Sivadeep

Hi Sivadeep,

Thank you for your reply!

I put memory map at bottom link

https://drive.google.com/drive/folders/1S9gi_XdfDZ6D_EzV0QixXM7850hv9Umk?usp=sharing

I simply modified the post-processing part of the sample code in vx_draw_box_detections_target.c (tivxKernelDrawBoxDetectionsProcess). In it, I declared two arrays as follows:

#define REG_MAT_IDX1 32
#define REG_MAT_IDX2 80
#define MAX_LANE_NUM 4
float regMat[MAX_LANE_NUM][REG_MAT_IDX1][REG_MAT_IDX2];

#define MASK_MAT_IDX1 32
#define MASK_MAT_IDX2 80
float maskMat[MAX_LANE_NUM][MASK_MAT_IDX1][MASK_MAT_IDX2];

The issue is that when I store the model's output into both of these arrays, the program crashes. However, if I only store the output into either one of the arrays, it works without any problem.

Best regards,

Jiemin

Hi Jiemin,

jiemin jang said:

The issue is that when I store the model's output into both of these arrays, the program crashes. However, if I only store the output into either one of the arrays, it works without any problem.

When two arrays are defined the program is crashing and if only single array is defined it's working. Is my understanding correct?

I'm looping in the vision apps expert also in this thread.

Regards,
Sivadeep

Hi Sivadeep,

Yes, you're absolutely right. I appreciate your assistance. I'm also in the process of verifying whether there's any misconfiguration in the memory map.

Best regards,

Jiemin

Hi Jiemin,

Can you please define the array in heap memory or any other memory section and check the same. 

Regards,
Sivadeep

Hi Sivadeep,

I try malloc as bellow, map->bboxLHW could not allocate.

Hi Jiemin,

you can use tivxMemAlloc(), since dsp run freertos malloc() will not work. 

you can see implementations in other target kernel source files. TIVX_MEM_EXTERNAL flag is to allocate in ddr_local_heap memory of c66x and  TIVX_MEM_EXTERNAL_SCRATCH  flag is used to allocate in ddr_scratch region of c66x. (refer to the memory map for the sizes of those regions )

Regards,
Gokul

Hi Gokul,

I would like to use bottom memory

Hi Jiemin,

Due to a holiday, half of our team is currently out of the office. Please expect a 1~2 day delay in responses.

Apologies for the delay, and thank you for your patience.

Can you please check this document : https://www.ti.com/lit/ab/spradp3/spradp3.pdf

Regards,
Sivadeep

Hi Sivadeep,

Thank you for your help! It work!

Thanks a lot again!!

Best regards,

Jiemin