LAM: Installation of lam mpi

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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