If you're just starting with MPI, we strongly recommend that you use Open MPI instead of LAM/MPI.
To directly answer your question, are you absolutely sure that your executable is named hello.o? .o files are typically intermediate object files.
On Oct 18, 2010, at 9:53 AM, saahil.in_at_[hidden] wrote:
> Hello everyone,
> I am doing an undergraduate level mini project that will demonstrate the working of and advantages of running a distributed algorithm in a truly distributed environment, in the form of a Beowulf cluster. For this purpose I am using LAM as my message passing interface. However, I am facing a problem while trying to test the set up with the hello world program. I was able to set up NFS properly, and am also able to boot using lamboot. I compiled the hello.c program with the mpicc option, copied the output file into the directory shared by nfs, and then used the following command to run -
>
> mpirun n0-2 hello.o
>
> I get an error saying that on atleast one of the nodes started by mpirun, MPI_INIT wasn't initialized.
>
> My head node(my personal laptop) is a x86_64 architecture based Fedora 12 system, and the rest of my slave nodes(lab computers) are x86 arch Fedora 13 systems. All systems are running the same version of Lam-Mpi 7.1.4.
> Could anyone tell me as to where I might be going wrong?
> Thank you very much.
>
> Regards,
> Saahil_______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
--
Jeff Squyres
jsquyres_at_[hidden]
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