Hi Sufeng, On 06/14/2013 04:35 PM, Sufeng Niu wrote:

1. when I run a simple MPI hello world on multiple nodes, (I already installed mpich3 library on master node, mount the nfs, shared the executable file and mpi library, set slave node to be keyless ssh), my program was stoped there say: bash: /mnt/mpi/mpich-install/bin/hydra_pmi_proxy: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory.

1. Did you make sure /mnt/mpi/mpich-install/bin/hydra_pmi_proxy is available on each node? 2. Did you also make sure all libraries it is linked to are available on each node? You can check these libraries using "ldd /mnt/mpi/mpich-install/bin/hydra_pmi_proxy" -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji