how to run petsc on different machine

ming zhu foolishzhu at
Tue Dec 1 14:10:28 CST 2009

 With --download-mpich=1,Petsc install mpi. However, since I want to run my Petsc program on different machines and mpiexec -machinefile <machineifle> does not work. It complains:invalid mpiexec argument -machinefile.
Do I have to install mpi for this ? Or do other way?
Thank you

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