ispc

The Intel® Implicit SPMD Program Compiler (Intel® ISPC) is a compiler for
writing SPMD (single program multiple data) programs to run on the CPU and
GPU. The SPMD programming approach is widely known to graphics and GPGPU
programmers. The main idea behind SPMD is that one writes programs as if they
were operating on a single data element (a pixel for a pixel shader, for
example), but then the underlying hardware and runtime system executes
multiple invocations of the program in parallel with different inputs (the
values for different pixels, for example).