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hpc_concepts

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hpc_concepts [2009/11/05 08:10] – 172.26.0.166hpc_concepts [2009/11/05 08:20] – 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//**. 
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 Machines sit idle for long periods of time, often while their users are busy doing other things. **Condor takes this wasted computation time and puts it to good use**. The situation today matches that of yesterday, with the addition of clusters in the list of resources. These machines are often dedicated to tasks. Condor manages a cluster's effort efficiently, as well as handling other resources.  Machines sit idle for long periods of time, often while their users are busy doing other things. **Condor takes this wasted computation time and puts it to good use**. The situation today matches that of yesterday, with the addition of clusters in the list of resources. These machines are often dedicated to tasks. Condor manages a cluster's effort efficiently, as well as handling other resources. 
 http://www.cs.wisc.edu/condor/downloads-v2/download.pl http://www.cs.wisc.edu/condor/downloads-v2/download.pl
hpc_concepts.txt · Last modified: 2010/05/22 14:19 by 127.0.0.1