Multiple OpenGL support for real time embedded system?


I am developing a real time embedded system using 2 OpenGL cards. The system requires to process 2 graphics cards at the same time using OpenGL protocol. Is there a way I can command to run one of the processor at the background? How do one use OpenGL library to support 2 processor at the same time (e.g. how does function call like glutReshapeFunc knows which processor’s output is it trying to reshape)

Thanks for any suggestion.