Program Models SPMD (Single Program,Multiple Data) All PE's (Processor Elements)execute the same program in parallel,but has its own data Each PE uses a unique ID to access its portion of data - Different PE can follow different paths through the same code This is essentially the CUDA Grid model (also OpenCL,MPI) SIMD is a special case-WARP used for efficiency -Master/Worker Loop Parallelism -Fork/Join 8 8 ②nVIDIA/ILLINOIS8 Program Models – SPMD (Single Program, Multiple Data) – All PE’s (Processor Elements) execute the same program in parallel, but has its own data – Each PE uses a unique ID to access its portion of data – Different PE can follow different paths through the same code – This is essentially the CUDA Grid model (also OpenCL, MPI) – SIMD is a special case – WARP used for efficiency – Master/Worker – Loop Parallelism – Fork/Join 8