[Pw_forum] LAM 7.1.1 and PW2.1.2

[Marco Fornari]

Dear all,

I'm having this problem running PW 2.1.2 on a Pentium cluster
with LAM 7.1.1.1 and IFORT 8.0:

    G cutoff =  189.7462  (   2733 G-vectors)     FFT grid: ( 20, 20, 20)

    nbndx  =     4  nbnd   =     4  natomwfc =     8  npwx   =     181
    nelec  =    8.00 nkb   =     8  ngl    =      65
MPI_Allreduce: invalid operation: Invalid argument (rank 0, MPI_COMM_WORLD)
Rank (0, MPI_COMM_WORLD): Call stack within LAM:
Rank (0, MPI_COMM_WORLD):  - MPI_Allreduce()
Rank (0, MPI_COMM_WORLD):  - main()
----------------------------------------------------------------------------- 

One of the processes started by mpirun has exited with a nonzero exit
code.  This typically indicates that the process finished in error.
If your process did not finish in error, be sure to include a "return
0" or "exit(0)" in your C code before exiting the application.

PID 10516 failed on node n0 (10.0.0.1) with exit status 22.
----------------------------------------------------------------------------- 


PW 2.1.1 works well on the same cluster. Did you encountered this
issue already?

Thanks,
Marco