On Dec 23, 2004, at 7:54 PM, Fernando Robles Morales wrote:
> while the program mpirun run ,it's again written an error:
>
> ferrmi_at_hatter:/usr/soft/src/lam-7.1.1/examples/hello$ mpirun C ./hello
>
> -----------------------------------------------------------------------
> ------
> It seems that [at least] one of the processes that was started with
> mpirun did not invoke MPI_INIT before quitting (it is possible that
> more than one process did not invoke MPI_INIT -- mpirun was only
> notified of the first one, which was on node n0).
> mpirun can *only* be used with MPI programs (i.e., programs that
> invoke MPI_INIT and MPI_FINALIZE). You can use the "lamexec" program
> to run non-MPI programs over the lambooted nodes.
>
> -----------------------------------------------------------------------
> ------
>
> i want to know which is the problem, and how to solve it!!
> what should I do?
The problem is that your program hello exited before it called
MPI_Init(). There are a couple of possible reasons for this. The most
obvious is that the program doesn't contain a call to MPI_Init() - are
you sure your application calls MPI_Init()? If so, then your
application is dying before MPI_Init() for some reason (that probably
has nothing to do with LAM). In this case, you are going to need to
debug your application a little bit - I would take a look at the LAM
FAQ, in particular the section on debugging:
http://wwww.lam-mpi.org/faq/
Brian
--
Brian Barrett
LAM/MPI developer and all around nice guy
Have an LAM/MPI day: http://www.lam-mpi.org/
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