On Apr 23, 2008, at 2:57 AM, gauri dhopavkar wrote:
> I am very new in this field of cluster. Please give me details of
> the following queries --
> 1.I have installed Red Hat Enterprise Linux 5 in Four computers. In
> RHEL 5, Lam Mpi version 7.1.2 is available. Is it the same as 7.1.4 ?
> If not will this version work properly?
>
This file contains the high points of differences between LAM versions:
http://sourcehaven.osl.iu.edu/svn/trillium/trunk/HISTORY
7.1.4 (and the possibly upcoming 7.1.5) have a bunch of bug fixes
beyond 7.1.2.
Note that LAM/MPI is in maintenance mode -- all new work is occurring
on Open MPI (www.open-mpi.org).
> 2. I have established the cluster by physically connecting the four
> nodes in LAN and I have written VI editor text file in one computer
> which I call head node. In this vi file ip addresses of all member
> nodes is written with top address as that of the head node. Is it
> correct? When I turn on all nodes in linux and give command on head
> node - shell$ lamboot filename ,I get list of all nodes in the
> cluster as n0 n1 and so on. If this is wrong then pls. tell me the
> correct way.
>
I can't quite parse your text to understand your question. It sounds
like LAM is functioning properly. You might want to have a look
through the User Guide; see the LAM/MPI web site for more details.
> 3. How to test the parallel applications on such cluster? Can you
> send links of some standard applications which can be tested on such
> cluster? Please detail me the steps (commands) how to proceed for
> the execution of parallel application?
>
See the User's Guide for some trivial test programs.
> 4. Further, how to combine two physically distant lam/mpi clusters
> by using Globus GT4?
> Kindly guide me for the above queries. I am very much confused.
>
LAM has a very lame Globus integration which doesn't work very well
and is probably very dated (we stopped active work on LAM/MPI a few
years ago). You might need an explicitly grid-enabled MPI
implementation (such as one of the MPICH-G* variants) to work in a
Globus environment.
Hope that helps.
--
Jeff Squyres
Cisco Systems
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