LAM: query regarding lam/mpi cluster

On Mar 19, 2008, at 7:16 AM, gauri dhopavkar wrote:
> I am doing Post Graduation in Computer Science. My
project topic is  
> Grid computing. I have built up a Lam/Mpi cluster in
our college lab  
> which allows parallel execution of job. Please answer
these queries:
>
> 1. Are there any standard ready-made applications which
can be run  
> on this cluster for demonstration purpose?
>

There are many...  Have a look in the examples/ directory of
the LAM/ 
MPI tarball for simple ones, or a quick google search should
find a  
good set of MPI applications.

> 2. Is there any mechnism which allows to store process 

> status(details) executing on one node of cluster to
other node? this  
> is needed in case of  node failure.
>
This is not part of the MPI standard.  Generally
applications use  
custom checkpointing mechanisms or system level
checkpointing for  
handling node failures.  LAM/MPI supports integration with
the BLCR  
system level checkpointer on Linux systems.  Have a look at
our paper  
on the subject for more details:

   http://www.lam-mpi.org/papers/lacsi2003/lacsi-2003.pdf

> 3. How to take snapshot of a process state?
>

This is a difficult task.  I'd recommend the above paper for
more  
details on system level checkpointing.  If you search on ACM
or IEEE's  
database, I'm sure you'll find a number of papers on system
and  
application level checkpointing for MPI.  It's a complex
topic with  
lots of tradeoffs.


Hope this helps,

Brian

-- 
   Brian Barrett
   LAM/MPI Developer
   Make today a LAM/MPI day!


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