TDA4VM: TIOPVX share memory issue

xie jc

Part Number: TDA4VM

Hi TI experts,

This is an urgent issue, please assist us as soon as possible.

When I call cvxCreateImage and vxCreateObjectArray function multiple times to allocte memory.There will be errors reported by opvx share memory,

Q1:Did I apply for more memory than the total size of shared memory?

Q2:What are the addresses and sizes of this shared memory？

Q3:If I need to increase the size of shared memory, what do I need to do?

Error Logs:

###num_input_tensors:1 num_output_tensors:16
---------------------
MEM: ERROR: Alloc failed with status = 12 !!!
215.752459 s: VX_ZONE_ERROR:[tivxMemBufferAlloc:80] Shared mem ptr allocation failed
215.752494 s: VX_ZONE_ERROR:[ownAllocTensorBuffer:85] Could not allocate tensor memory
215.752504 s: VX_ZONE_ERROR:[ownGraphAllocateDataObject:899] Memory allocation for replicated parameter parent object failed
215.752516 s: VX_ZONE_ERROR:[vxVerifyGraph:2000] Memory alloc for data objects failed
215.752523 s: VX_ZONE_ERROR:[vxVerifyGraph:2109] Graph verify failed
215.752723 s: VX_ZONE_ERROR:[tivxNodeSendCommandTimed:277] vxVerifyGraph should be called before tivxNodeSendCommand can be called on a node in the same graph
215.752825 s: VX_ZONE_ERROR:[tivxNodeSendCommandTimed:277] vxVerifyGraph should be called before tivxNodeSendCommand can be called on a node in the same graph
--------------------
MvUseSlamInit 222222

Thanks & Regards.

over 2 years ago

0 Brijesh Jadav over 2 years ago

TI__Guru**** 500825 points

Hi xie jc,

Most likely you have run out of memory, are you sure that the memory reserved is sufficient for this usecase?

Regards,

Brijesh

0 xie jc over 2 years ago in reply to Brijesh Jadav

Expert 2440 points

Hi Brijesh,

Brijesh Jadav said:
are you sure that the memory reserved is sufficient for this usecase

No, I am not sure. If the memory I need to allocate is greater than the size of the existing shared memory, what should I do?

Thanks & Regards.

0 Brijesh Jadav over 2 years ago in reply to xie jc

TI__Guru**** 500825 points

Hi xie jc,

Can you do rough pen & paper calculation to figure out the amount of memory you require?

From the APi appMemAlloc in file vision_apps\utils\mem\src\app_mem_linux_dma_heap.c, it does look like you are running out of memory. We have reserved some 512MB buffer memory in the vision apps, if you require more than 512MB, you need to allocate more to this secion..

Regards,

Brijesh

0 xie jc over 2 years ago in reply to Brijesh Jadav

Expert 2440 points

Hi Brijesh,

Can you tell me which section can be reduce if I want to allocate memory more than 512M?

Try to minimize the impact, otherwise changes to DDR will affect many functions.

Meanwhile, are there any rules to follow for modifying DDR?

Thanks & Regards.

0 Brijesh Jadav over 2 years ago in reply to xie jc

TI__Guru**** 500825 points

Hi xie jc,

But do you require more than 512MB of memory? Can you please do some rough calculation and figure out how much memory is required?

We can extend this 512MB buffer memory and see if it help, but by how much do we need to increase?

Regards,

brijesh

0 xie jc over 2 years ago in reply to Brijesh Jadav

Expert 2440 points

Hi Brijesh,

The resolution of the surround view camera is 1920 * 1280, so we can calculate the required memory is as follows

total buffer:camera send 163200 + detection 142244 + screen show 252000 + other inner buffer = 614MB

Thanks & Regards.

0 Brijesh Jadav over 2 years ago in reply to xie jc

TI__Guru**** 500825 points

Hi xie jc,

Can you please refer to below developer note for updating the memory map? We can definitely increase buffer memory. This requires changes in the vision apps and Linux DTS file.

8.9. Understanding and updating SDK memory map for J721E — Processor SDK RTOS J721E

Regards,

Brijesh

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TDA4VM: TIOPVX share memory issue