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hpc_concepts

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hpc_concepts [2009/11/05 07:54] – 172.26.0.166hpc_concepts [2009/11/05 07:55] – 172.26.0.166
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-The MPI interface is meant to provide essential virtual topology, synchronization, and communication functionality between a set of processes (that have been mapped to nodes/servers/computer instances) in a language-independent way, with language-specific syntax (bindings), plus a few features that are language-specific. MPI programs always work with processes, but programmers commonly refer to the processes as processors. Typically, for maximum performance, each CPU (or core in a multicore machine) will be assigned just a single process. This assignment happens at runtime through the agent that starts the MPI program, normally called **//mpirun//** or **//mpiexec//**.+The MPI interface is meant to provide essential virtual topology, synchronization, and communication functionality between a set of processes (that have been mapped to nodes/servers/computer instances) in a language-independent way, with language-specific syntax (bindings), plus a few features that are language-specific. MPI programs always work with processes, but programmers commonly refer to the processes as processors. Typically, for maximum performance, each CPU (or core in a multicore machine) will be assigned just a single process. This assignment happens at runtime through the agent that starts the MPI program, normally called **//mpirun//** or **//mpiexec//**.  
 +http://www.open-mpi.org/software/ompi/v1.3/
  
 HPC environments are often measured in terms of FLoating point OPerations per Second (FLOPS) HPC environments are often measured in terms of FLoating point OPerations per Second (FLOPS)
hpc_concepts.txt · Last modified: 2010/05/22 14:19 by 127.0.0.1