[Beowulf] Running MPICH on more than one node

Tod Hagan tod at gust.sr.unh.edu
Wed Jan 14 14:41:30 EST 2004


Mpich uses rsh by default. Did you set 
'export RSHCOMMAND=ssh'
when compiling mpich?

Can you run the mpich tests ('make testing') successfully?

Before running mpich tests programs, you must be able to ssh in to the
remote node yourself WITHOUT typing a password. See
http://www.puddingonline.com/~dave/publications/SSH-with-Keys-HOWTO/document/html/SSH-with-Keys-HOWTO.html

On Wed, 2004-01-14 at 14:03, Elif Sariarslan wrote:
> Hi, 
> 
> I have installed mpich on two machines. I am
> unable to execute my programs on 2 nodes. I have
> enabled ssh without password requirements and I have
> added both machines to machines.LINUX file but I still
> get the following error message when I execute the
> following command: 
> 
> [root at node02 basic]# ../../bin/mpirun -np 2 systest
>  
> 
> node00: Connection refused
> p0_26120:  p4_error: Child process exited while making
> connection to remote process on
> node00.dl805.eng.ohio-state.edu: 0
> ../../bin/mpirun: line 1: 26120 Broken pipe           
>  /root/mpich-1.2.5.2/examples/basic/systest -p4pg
> /root/mpich-1.2.5.2/examples/basic/PI26032 -p4wd
> /root/mpich-1.2.5.2/examples/basic
> 
> Thanks,
> 
> Elif
> 
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