It is the usual mechanism for MPI code: a single executable is available on each node (through a globally accessible file system such as $WORKDIR), and launched on each node (through the MPI wrapper command, mpirun). In the SPMD paradigm, each processor loads the same program image and executes and operates on data in its own address space (different data). When your job spans several compute nodes, you must use an MPI model.ĭistributed memory systems use single-program multiple-data (SPMD) and multiple-program multiple-data (MPMD) programming paradigms. In the latter, open multiprocessing ( OMP) programming techniques are employed for multiple threads (light weight processes) to access memory in a common address space. In the former, the message passing interface (MPI) is employed in programs to communicate between processors that use their own memory address space. There are two memory models for computing: distributed-memory and shared-memory.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2022
Categories |