Maximum number of SC_MODULE ?

[Mathieu]

Hi,

 

I have an error at runtime that says "in sc_main (argc = Cannot access memory at address 0x....)"

 

I use system 2.2.0 on a 64 bit linux machine.

The problem appears when I try to instanciate 1100 additional sc_modules in my design.

 

I was wondering : is there a maximum number of SC_MODULE ?

Or if someone has any idea about the cause of the problem it would be really great...

 

Thanks,

Mathieu

[apfitch]

I'm not aware of a maximum number. Normally this kind of problem is related to stack size. If that is the case, then instancing the modules using pointers might be a solution as the memory goes on the heap which can be much bigger.

 

An easy thing to try to test if it's a stack problem is to look at the ulimit settings on your shell in Linux and see if the stack is limited. If it is, try changing it to unlimited.

 

regards

Alan

[Mathieu]

Great, thank you so much Alan !

 

This was exactly the cause of my problem.

I changed the stacksize and it's running fine.

 

Thanks for the pointer solution, I will think about it (hoping it's well supported by the synthesis tool).

I wasn't familiar at all with the stack/heap aspect. I searched for hours, I would never have found.

Thanks again for your help.

 

Regards,

Mathieu