TMS320F28P650DK: Dual CPUs clock async. in run time

Tool/software:

Hi Champ,

I am asking for my customer.

They are running led dual cores examples with and without Sysconfig.

In without Sysconfig example, we have the line for Sync CPUs added there.

IPC_sync(IPC_CPU1_L_CPU2_R, IPC_SYNC);

IPC_sync(IPC_CPU2_L_CPU1_R, IPC_SYNC);

We see the GPIO of the two CPUs individually toggle initially correctly synchronized (the two CPUs have the same frequency setting). However, it will slowly be asynchronous over the time (the example of Sysconfig does not have such asyn. event) 

Not sure if we miss any configuration to have dual CPUs synchronized properly.

Thanks and regards,

Johnny