Re: MOSIX

[Eray Ozkural <erayo@cs.bilkent.edu.tr>]

On Fri, 15 Sep 2000 16:48:39 Dariush Pietrzak wrote:
> Hello,
>  i'm very green on this list, had a little experience working/programming
> under pvm, but
>  how about MOSIX clusters? 
>   this technology simplifies using clusters, you can just clone your prog
> to make it work on diferent machines, you don't need to recompile/recode
> all apps to make them use your cluster.
>  also, how about fail-over techniques? ( is this the right group?)
>    i mean - we can very easily implement technique used by novell to build
> their clusters ( one ip per service, migrating services <=> migrating ips)

Of course this is the right group. MOSIX adopts certain techniques for
providing distributed services, say processes, etc. In general, however
note that you might go for HA quite easily but in many cases HPC will be
very hard to attain on any system that is just POSIX.

What I mean is PVM or MPI programs usually take good advantage of the
parallel machine, while a distributed OS can't do that very good on its
own without help from programmer about parallelism)

>  
>  And maybe one more question, more suited for this group - what do you
> think about moving statistical computation to hmm let's say pvm enabled
> set of machines ( now it's beeing done on 2*sparc 350, quite fast, but 
> 12*pII sth should outperform it)
> 

Do it on MPI, you need a paper or two about HMM computation in parallel probably.

Thanks,

-- 
Eray (exa) Ozkural
Comp. Sci. Dept., Bilkent University, Ankara
e-mail: erayo@cs.bilkent.edu.tr
www: http://www.cs.bilkent.edu.tr/~erayo