Inter-processor communication

[rkmanikanta]

Hi,

What are different techniques in used in Inter-processor communication? This question is mainly related to partition based parallel processing where CPUs execute different OSs.

Say CPU 1 executes Linux and CPU2 executes Nucleus. How the program running on CPU1 can communicate to a program running in CPU2.

Can we use Sockets? What else can we use?

Thanks,

Mani

[Dmitry_Vyukov]

Quoting rkmanikanta

Can we use Sockets? What else can we use?

Yes, you can use sockets, but it's a kind of overkill. Sockets are intended for remote communication.

You can use direct shared memory communication - one processors writes data to memory, and another reads it. That simple.

For waiting/signaling you can use instructions like MWAIT or IPIs (inter-processor interrupts).