.. _libc_gpu_rpc:

======================
Remote Procedure Calls
======================

.. contents:: Table of Contents
  :depth: 4
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Remote Procedure Call Implementation
====================================

Certain features from the standard C library, such as allocation or printing,
require support from the operating system. We instead implement a remote
procedure call (RPC) interface to allow submitting work from the GPU to a host
server that forwards it to the host system.

Extensions
----------

We describe which operation the RPC server should take with a 16-bit opcode. We 
consider the first 32768 numbers to be reserved while the others are free to 
use.