TDA4VH-Q1: What is the difference of c7x_2 binary among four c7x_x binaries?

Seunghyun Roh

Part Number: TDA4VH-Q1
Other Parts Discussed in Thread: TDA4VH

Hello,

I am using SDK 8.5 for Tda4VH.

When I build four c7x_x, there are the outputs.

-rw-rw-r-- 1 seunghyun seunghyun 23536760 Mar 15 14:20 vx_app_rtos_linux_c7x_1.out
-rw-rw-r-- 1 seunghyun seunghyun 24593448 Mar 14 21:23 vx_app_rtos_linux_c7x_2.out
-rw-rw-r-- 1 seunghyun seunghyun 23396288 Mar 14 21:23 vx_app_rtos_linux_c7x_3.out
-rw-rw-r-- 1 seunghyun seunghyun 23396288 Mar 14 21:23 vx_app_rtos_linux_c7x_4.out

I checked code(libraries and source code), but I could not find a difference that much.

name origin length used unused attr fill
---------------------- ------------ -------- -------- -------- ---- --------
DDR_C7x_2 0000b7a04000 02dfc000 0170009d 016fbf63 RWIX

name origin length used unused attr fill
---------------------- ------------ -------- -------- -------- ---- --------
DDR_C7x_4 0000be204000 02dfc000 0168cbe9 0176f417 RWIX

What is the additional c7x_2 function?

Sometimes c7x_2 behaves differently, like not generating a tensor, so I want to know the difference detail.

Best regards,

over 2 years ago

0 Nikhil Dasan over 2 years ago

TI__Guru* 84726 points

Hi,

c7x_2 is the only core among others that has the c66 kernels that were recompiled for C7X on J7AHP. I think this might account for the additional memory. You could compare the map files and find the differences in the both.

May I know what is the issue that you are facing?

Regards,

Nikhil

0 Seunghyun Roh over 2 years ago in reply to Nikhil Dasan

Expert 1760 points

The issue was c7x_2 behaves differently from the other c7x cores. The c7x_2 did not generate a tensor, but the other did. So I was comparing them, and c7x_2 consumes bigger memory. That's why I asked.

0 Nikhil Dasan over 2 years ago in reply to Seunghyun Roh

TI__Guru* 84726 points

Hi,

Nikhil Dasan said:
c7x_2 is the only core among others that has the c66 kernels that were recompiled for C7X on J7AHP. I think this might account for the additional memory. You could compare the map files and find the differences in the both.

C7x_2 consumes bigger memory because of the reason mentioned above.

May I know if this answers your query?

Regards,

Nikhil

0 Seunghyun Roh over 2 years ago in reply to Nikhil Dasan

Expert 1760 points

Hello Nikhil,

Thank you for your help.

Is there a reason that c7x_2 has c66 kernels?
Does SDK 8.6's c7x_2 has c66 kernels, too?

Best regards,

Seunghyun

+1 Nikhil Dasan over 2 years ago in reply to Seunghyun Roh

TI__Guru* 84726 points

Hello Seunghyun,

Seunghyun Roh said:
Is there a reason that c7x_2 has c66 kernels?

These are not c66 kernels. They are c66 kernels that were recompiled for C7X. So basically they are C7x kernels.This is present there to maintain uniformity among various Jacinto Platforms.
May I please know exactly what issue are you facing because of this?

Seunghyun Roh said:
Does SDK 8.6's c7x_2 has c66 kernels, too?

Yes, it is there is SDK 8.6 too.

Regards,

Nikhil

0 Seunghyun Roh over 2 years ago in reply to Nikhil Dasan

Expert 1760 points

Hello Nikhil,

The issue was 8.5 SDK could not handle my model file.

The 8.6 SDK could handle it, so the issue was gone.

I wanted to know the detail in the future, but TI told me I should use 8.6 to close my issue.

Best regards,

Processors

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TDA4VH-Q1: What is the difference of c7x_2 binary among four c7x_x binaries?