Using many-core coprocessor to boost up Erlang VM

The trend in processor design is to build more cores on a single chip. Commercial many-core processor is emerging these years. Intel Xeon Phi coprocessor , which is equipped with at least 60 relatively slow cores, is the first commercial many-core product released by Intel. Xeon Phi coprocessor is encapsulated in a PCIe card and communicates with host operating system through a specialized interface library called SCIF. In this paper, we propose a solution that integrates the computing power of multi-core host machine and Xeon Phi many-core coprocessor. The solution is based on the distribution facilities of Erlang. This paper proposes a highly optimized distribution carrier driver based on SCIF. This driver can both exploit the advantage of SCIF to the full and shield the performance gap between host and coprocessor. User applications can make use of the extra computing resources provided by many-core coprocessor without even knowing the existence of it.