Program Models SPMD(Single Program,Multiple Data) Master/Worker (OpenMP,OpenACC,TBB) -A Master thread sets up a pool of worker threads and a bag of tasks Workers execute concurrently,removing tasks until done 一 Loop Parallelism (OpenMP,OpenACC,C++AMP) Loop iterations execute in parallel FORTRAN do-all (truly parallel),do-across (with dependence) Fork/Join (Posix p-threads) Most general,generic way of creation of threads 10 /②nVIDIA ILLINOIS10 Program Models – SPMD (Single Program, Multiple Data) – Master/Worker (OpenMP, OpenACC, TBB) – A Master thread sets up a pool of worker threads and a bag of tasks – Workers execute concurrently, removing tasks until done – Loop Parallelism (OpenMP, OpenACC, C++AMP) – Loop iterations execute in parallel – FORTRAN do-all (truly parallel), do-across (with dependence) – Fork/Join (Posix p-threads) – Most general, generic way of creation of threads 1 0