From your description, it's not clear exactly what is going wrong.
E.g., is your MPI application failing to get past MPI_INIT when running
on multiple nodes, or is lamboot failing while asking for passwords for
the remote nodes, or ...?
Can you run a simple "hello world" in MPI across multiple nodes? (i.e.,
a simple MPI application that has nothing to do with Open GL or X)
I cannot think of a reason offhand why MPI should interfere with Open
GL's workings, but be aware that you may have to deal with X
authentication issues when spanning multiple nodes. I'm not too
familiar with Open GL; does it have it's on security and/or
authentication procedures on top of X's? (it's not clear from your
question exactly what password is being requested)
Also, be aware that depending on what you're doing, X itself may
generate a fair amount of network traffic -- displaying N windows from
remote nodes may become a performance bottleneck.
On Oct 20, 2004, at 6:10 AM, thiranji perera wrote:
> To whom it may concern,
>
> I'm using LAM/MPI with OpenGL codings. My aim is to create OpenGL
> window for each client/rank(each process that is running on different
> machines.). When I run the program in from the Server machine it
> should create processes in server and the client machines.
> The basic structure of the program is:-
> //inside the main function of the LAM/MPI program
>
> if (rank ==3)
> ////------- codings to create an OpenGL window.
>
> It works fine when run it in a single machine. It creates an OpenGL
> window for each client/rank. But when I run it using multiple machines
> (creates processes on diffrerent machine) it asks for a password stuck
> in the program.
>
> I know LAM redirected it's standard output to server. But since OpenGL
> creates it's own window(not the standard console). I think it should
> work because OpenGL is a seperate window. Do U have any ideas on this
> OR Is there any way that U can disable the redirection of the output
> to the server. If you have any please mail me.
>
> Thanks.
> Thiranji.
>
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--
{+} Jeff Squyres
{+} jsquyres_at_[hidden]
{+} http://www.lam-mpi.org/
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