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Cluster Runtime Environment

The Cluster Runtime Environment (CRE) is an integrated component of the Sun HPC ClusterTools software. It provides the job launching and load balancing capabilities for MPI based C/C++/Fortran programs. CRE can be used in conjunction with one of the JMSs described above. FIGURE 5 is a brief software architecture diagram that illustrates a job launching scenario using CRE.

The mprun(1) command can be executed from any node of the cluster to launch the job that will execute a.out on the different nodes. The above scenario is described in detail in the Sun HPC ClusterTools Administration guide1.

FIGURE 5 CRE Architecture

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