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Subject: Re: [OMPI users] Embedding MPI program into a webservice ?
From: Prasadcse Perera (prasadcse0_at_[hidden])
Date: 2009-07-17 02:02:51


Hi, with a bit of experience I have with the Axis2/C, I think your second
model with MPI_Comm_spawn might solve your problem. One of crude
restriction with Axis2/C architecture is the run time service loading using
static libs. This sometimes prevent many user needed handling where your
logic has to be started from Invoke calls. But in this scenario I think the
service acting as an agent to parellalize your task (second diagram) is the
evident option that will suit your requeirement.

On Fri, Jul 17, 2009 at 10:55 AM, Lisandro Dalcin <dalcinl_at_[hidden]> wrote:

> I do not know anything about implementing webservices, but you should
> take a look at MPI-2 dynamic process management. This way, your
> webservice can MPI_Comm_spawn() a brand-new set of parallel processes
> doing the heavy work. This way, your webservice will act as a kind of
> proxy application between the request coming from the outside world
> and your parallel computing resources...
>
>
> On Fri, Jul 17, 2009 at 12:44 AM, Ashika Umanga
> Umagiliya<aumanga_at_[hidden]> wrote:
> > Greetings all,
> >
> > I am in the design level of parallizing an SVM algorithm.We need to
> expose
> > this as a webservice.I have decided to go with Axis2/C implementation.
> >
> > Please refer to : http://i30.tinypic.com/i707qq.png
> >
> > As can be seen in the Figure1 , can I embedd my MPI logic in side my
> > Webservice ? I guess that its not possible because the webservice is
> > packaged as a static library (myService.so) and can not execute the
> > "mpirun".
> >
> > In Figure2, I have illustrated another alternative.In my Webservice, I
> > invoke my parallel program (myParallelProg) using "mpirun" and other
> > parameters.
> >
> > Is there any good design to accomplish what I am trying to do?I think the
> > second is not a good design ?
> >
> > Thanks in advance,
> > umanga
> >
> >
> > _______________________________________________
> > users mailing list
> > users_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
> >
>
>
>
> --
> Lisandro Dalcín
> ---------------
> Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
> Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
> Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
> PTLC - Güemes 3450, (3000) Santa Fe, Argentina
> Tel/Fax: +54-(0)342-451.1594
>
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