[mpich-discuss] MPICH2 on LAN with Ubuntu 12.04

[Reuti]

Hi,

Am 24.10.2013 um 12:05 schrieb heshsham basit:

> Thanks a lot for your replies.
> I followed the instructions given here
> wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager1 
> 
> for running MPI program on multiple machines:
> 
> My master node is : 192.168.1.4
> My client is:  192.168.1.6 

You defined them both on both machines in /etc/hosts? What should give a valid reply is:

$ getent hosts ubuntu
192.168.1.4 ubuntu
$ getent hosts hesh
192.168.1.6 hesh

resp. the on the other machine.

-- Reuti


> I gave the following command from 192.168.1.4
>  
> root at ubuntu:/home# mpiexec -f hosts.cfg -n 4 hello
> root at 192.168.1.6's password: 
> [proxy:0:0 at hesh] HYDU_sock_connect (./utils/sock/sock.c:171): unable to get host address for ubuntu (1)
> [proxy:0:0 at hesh] main (./pm/pmiserv/pmip.c:209): unable to connect to server ubuntu at port 42104 (check for firewalls!)
> 
> Why I am getting there errors? 
> 
> Both the machines have locally generated executable hello. Do I must have same executable copied in both machines? 
> 
>  On master node 192.168.1.4
> root at ubuntu:/home# ls
> acme  hello  hosts.cfg  mpi_hello.c
> 
> On client  192.168.1.6 
> 
> root at hesh:/home#ls
> hesh hello 
>    
> hello in each machine sis generated after compilation locally.  
> 
> 
> 
> On 22 October 2013 12:51, Jeff Hammond <jeff.science at gmail.com> wrote:
> See http://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager
> for how to launch MPI across multiple machines.  You do not need to
> use any special hardware adapter; any Ethernet card should provide
> sufficient TCP/IP support.
> 
> Jeff
> 
> On Tue, Oct 22, 2013 at 9:23 AM, Pavan Balaji <balaji at mcs.anl.gov> wrote:
> > Hello,
> >
> > You'll need to either install mpich on a shared file system (such as NFS) or individually on each of the nodes.  The README file in the mpich tarball should have most of this information.
> >
> >   -- Pavan
> >
> > On Oct 22, 2013, at 8:26 AM, heshsham basit wrote:
> >
> >> Hi,
> >>
> >> I did some experimentation with MPICH on windows, and recently came to know that there is no support for Windows now.
> >> I am now shifting to Ubuntu. I was successful in installing MPICH2 and running my first MPI program on a single machine.
> >>
> >> Now I want to run my code on multiple PCs. How do I install MPI in a LAN ? What are the additional requirement if any? Do I need any specific hardware -network adapter  My card details are as under:
> >>
> >> root at ubuntu:/home# lspci -nnk | grep -i net -A2
> >> 01:07.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ [10ec:8139] (rev 10)
> >>     Subsystem: Hewlett-Packard Company Device [103c:301d]
> >>     Kernel driver in use: 8139too
> >>
> >>
> >> Most of my machines are having this type of card and are connected in LAN.
> >> Really appreciate for any pointers to appropriate document or suggestions.
> >>
> >>
> >> Thanks and regards,
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >
> > --
> > Pavan Balaji
> > http://www.mcs.anl.gov/~balaji
> >
> > _______________________________________________
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> > https://lists.mpich.org/mailman/listinfo/discuss
> 
> 
> 
> --
> Jeff Hammond
> jeff.science at gmail.com
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> 
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