Remote Procedure Call (RPC) is a process of communication in multicomputers. Here, instead of sending all the information in a message, a remote procedure call is made from the client machine to the server machine. In the below given architecture, you can see a client and server CPU. Each one has a library procedure. For making a remote procedure call, the client calls the client library procedure as a local call. Then, the client library procedure processes this call by generating a system call and a message is ready to be sent to the server. After that, the kernel in the client’s operating system sends this message from the client to the server. Now, the kernel in the operating system of the server receives this message and then it forwards it to the server the server’s library procedure.