Check your application; LAM is telling you that an MPI_REDUCE failed
because one of the arguments that you passed on rank 0 of that
communicator was bad. Are you sure that all the variables that you're
passing are valid when you invoke MPI_REDUCE? I think that "invalid
operation" in the error message *may* refer to the "op" argument, but
it's been too long since I've looked a the LAM code base, so I'm not
entirely sure...
On Jan 20, 2008, at 10:38 PM, ÇÈÑÇåíã ÓÇáã wrote:
>
> Hi LAM users and developer,
>
> Many thanks Roberto Scipioni for your help
>
> I have lam-7.1.1-pgi compiled on my machine and its
> path is /usr/local/lam-7.1.1-pgi. The suffix pgi
> indicates to the compiler's name. I've successfully
> compiled my application using this version of LAM
> compiled on c,c+ and f77 compilers. However, it failed
> to run the application on multiple prosseces and when
> I attempted to run the application, I got the message
> showed below at the tail of rsl.out.* files :
>
> MPI_Reduce: invalid operation: Invalid argument (rank
> 0, MPI_COMM_WORLD)
> Rank (0, MPI_COMM_WORLD): Call stack within LAM:
> Rank (0, MPI_COMM_WORLD): - MPI_Reduce()
> Rank (0, MPI_COMM_WORLD): - main()
>
> q1. Why has my application failed to finish the task?
> q2. Should I rebuild the new release of LAM or not
> necessary?How?
>
> Your help will be highly appriciated.
> Thanks in advance
> Ibrahim
> Master student
> Australia
>
>
>
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--
Jeff Squyres
Cisco Systems
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