Out of memory when doing a malloc() in dsp

Hi Akash,

If decreasing your Heap doesn't give you enough space you may need to allocate the memory from a different location. If this is the case please provide me with your .cfg and map files so I can see what your current configuration is.

Thanks,
Gerardo

Use Utils_memAlloc Api with heap id UTILS_HEAPID_DDR_CACHED_SR for allocating big memories.

Regards,

Brijesh

4478.Dsp1.cfg

0317.dsp1_mapfile.txt

Hi Akash,

So it looks like when you set a bigger heap size the memory is allocated from a different section of memory that's why it works. You could try specifying the section from where it is allocated manually so that you would be able to set your heap size back to a smaller value. You can do this by using:

// Section name for the buffer managed by the instance
params.sectionName = String null;

To set the section you want to allocate from. You can find all the configuration settings by going to the BIOS API at:
<tirtos_install_dir>\products\<bios>\docs\Bios_APIs.html
Then go to:
ti->sysbios->heaps->HeapMem
And clicking on Configuration settings.

Thanks,
Gerardo

Thanks for your reply...!!!

The procedure you have specified, do I need ccs for that???, because I'm currently not using ccs...

Is there some another way to do it... I'm using VisionSDK and compiling from command line...

Further, what are the different sources of memory??

What is the max_size I can allocate for Heap..??

Hi Akash,

No you would do this in your .cfg file, just like you are setting the size. You would use the same parameters variable you are currently using so it would look something like:

heapMemParams.sectionName

The memory could be allocated from the internal memory or the external one. Your device has a big external memory so you would want to allocate any big chunks from there. In this case the big chunk you allocated is from DSP1_DATA_MEM which is the external RAM. Your max size would depend on how much memory you actually have available, you can find out by looking at your map file for DSP1_DATA_MEM.

Thanks,
Gerardo