howto.v3

Path MPICH-V for MPICH the MPI Implementation

You need to launch the mpirun on the main dispatcher, providing it with a clusterfile with the following information for each participating cluster:
. The name of the cluster
. The hostname of the cluster frontend
. The number of nodes available on the cluster
. The path of the mpichv environment on that cluster
. The path of the executable on the cluster
. A flag indicating whether or not the local environment should be launched remotely

From this file, a script will be issued, and the C program mpirun.v3run will then launch everything including the local dispatchers on each cluster

On each cluster, we then need to find a machinefile with the list of the available nodes

The shell part of the mpirun will parse it and generate a machinefile with all the properties needed by the mpirun.ch_v3.local C program to properly launch the execution