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<DIV>I'd like to write a small programme in linux/c to achieve only the simpliest functions of mpich,like MPI_Init,,MPI_Comm_rank,MPI_Comm_size,MPI_Send and MPI_Recv,MPI_Finalize</DIV>
<DIV>Now,I'm not sure how communicating between computers <U>in a cluster</U> is achieved in mpich.</DIV>
<DIV>When I install mpich,I need to install rsh-server first,so I guess mpich uses rsh to communicate between computers <U>in a cluster</U>.Is that right?</DIV>
<DIV>Does mpich uses socket programming instead? Or both?</DIV>
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<DIV>Any suggestion will be greatly appreciated!</DIV>