[mpich-discuss] Problem running progrm on MPI cluster

[Jaydeep Vipradas]

Hello,

 

I have successfully created MPI cluster of two computers.

mpdcheck , mpdtrace -l, mpdallexit, mpdboot  all commands works fine.

 

Command "mpirun -n 4 hostname" also works fine and shows two host name
twice correctly.

 

But when I try to run a.out it shows error 

   $ mpirun -n 4 ./a.out

   "[Errno 2] No such file or directory".

 

I have also tried by giving full path of the a.out but got the same
error.

Note that error is for the second computer of the cluster and no error
is shown for the computer on which a.out is present.

 

I have created this a.out by following command

   $ mpicc test.c

 

Similarly when I run a python script written by me it runs on only one
computer and same error as above is shown for the other host.

  $ mpirun -n 4 python ./myscript.py

Again two processes on the computer one where the file is present shows
correct output but the same error is shown for other two processes which
run on the second computer where myscript.py is not present.

 

When I copied a.out to the second machine in the same path then the
program runs fine without any error.

 

Is it necessary to copy the executable on all computers in the cluster
before running (in the same path)?

Am I missing any command line flags for mpicc or mpirun ?

 

Thanks and Regards,

Jaydeep V.

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