[Paraview] MPI on multiple nodes

[Patrick Begou]

I'm sorry but the syntax you want to use doesn't work on my servers. So I cannot 
help.
With the one I suggest I'm running 360 pvserver processes this morning to 
visualize a large dataset on a cluster. May be you should try it.

Patrick

Mariam wrote:
>
> Thanks for your reply.
>
> The correct syntax to run on multiple hosts is: mpiexec –hosts N localhost M 
> remotehost 1 appName
>
> I tested with hostname and it worked; it printed the expected output.
>
> However, by executing the same command with pvserver, it does not work. I 
> ensured the location of paraview/pvserver is the same across both hosts. And I 
> am providing the full path of pvserver.
>
> I would like to make sure that I understood the concept correctly:
>
> From host1, if I executed parallel pvservers with MPI (host1, host2, hostN), 
> the clients should connect to host1.
>
> Can you please confirm?
>
> *From: *Patrick Begou <Patrick.Begou at legi.grenoble-inp.fr>
> *Date: *Tuesday, July 25, 2017 at 5:45 PM
> *To: *Mariam <mbahameish at gmail.com>, <paraview at paraview.org>
> *Subject: *Re: [Paraview] MPI on multiple nodes
>
> I think the syntax for mpiexec is:
>
> mpiexec -np 8 --host host_one,host_two pvserver
>
> This would launch 4 occurences of pvserver on host_one and 4 on host_two.
>
> 1) first check mpi is running:
>
> mpiexec -np 2 --host host_one,host_two hostname
>
> This should print the name of the 2 hosts.
>
> If it does not works check you can ssh from one host to the other without 
> password.
>
> 2) You need the same paraview/pvserver install on the two hosts in the same 
> location (not imposed but it is easier to launch)
>
> 3) May be use reverse connection from the parallel pvserver to the paraview 
> client when you launch pvserver
>
> Patrick
>
>
> Mariam wrote:
>
>     Hi,
>
>     I would like to ask about running pvserver in parallel with MPI on
>     multiple hosts. Is that possible?
>
>     The following commands were tested successfully:
>
>     1)Running MPI on localhost:
>
>     mpiexec –n M localhost pvserver
>
>     2)Running MPI on remotehost:
>
>     mpiexec –host remotehost –n M pvserver
>
>     But I was not able to run: mpiexec –hosts 2 localhost 1 remotehost 1 pvserver
>
>     I run the following to test MPI on multiple hosts and it worked: mpiexec
>     –hosts 2 localhost 1 remotehost 1 hostname
>
>     Is there any pre-configuration that should be done to pvserver? I want the
>     clients to connect to the server (master server), and the jobs are
>     distributed across multiple nodes.
>
>     Regards,
>
>     Mariam
>
>
>
>
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> -- 
> ===================================================================
> |  Equipe M.O.S.T.         |                                      |
> |  Patrick BEGOU           |mailto:Patrick.Begou at grenoble-inp.fr  |
> |  LEGI                    |                                      |
> |  BP 53 X                 | Tel 04 76 82 51 35                   |
> |  38041 GRENOBLE CEDEX    | Fax 04 76 82 52 71                   |
> ===================================================================


-- 
===================================================================
|  Equipe M.O.S.T.         |                                      |
|  Patrick BEGOU           | mailto:Patrick.Begou at grenoble-inp.fr |
|  LEGI                    |                                      |
|  BP 53 X                 | Tel 04 76 82 51 35                   |
|  38041 GRENOBLE CEDEX    | Fax 04 76 82 52 71                   |
===================================================================

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