Dear *Giuseppe*, You are right, node 4 and node 6 are not working properly. when I am running pw.x on these node, it gives ./pw.x -i relax2.in >out.out & [1] 8475 mpiuser@node4:~/qe-29-11/bin$ ./pw.x: symbol lookup error: ./pw.x: undefined symbol: mpi_initialized_ I have reinstalled gfortran and mpich but still facing the same problem. Could you please further guide me how to overcome this problem. regards Haider Abbas On Wed, Dec 5, 2018 at 9:17 PM Congiu, Giuseppe via discuss < [email protected]> wrote:
Hello Haider,
Are you compiling mpich and installing it in a global path accessible to all machines or you are using local installations? The missing symbol is a fortran symbol. The fact it is not there can mean mpich was not compiled with fortran support while your application is a fortran code. The fact that it works for a certain number of processes might mean some machine do have fortran support while other machines don’t.
Can you provide some additional information about your cluster configuration? The MPICH version you are running and how you are configuring it?
--Giuseppe
On Dec 5, 2018, at 1:53 AM, Haider Abbas via discuss <[email protected]> wrote:
mpi_initialized_
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