It certainly helps. You probably also want to disable all firewalling software between the two nodes (or, if you don't want to completely disable, ensure that all TCP / UDP ports can be opened between those two machines).
If you're just starting with MPI, I highly suggest that you start with Open MPI -- not LAM/MPI. LAM/MPI is in maintenance mode; all of us LAM developers moved to the next generation implementation several years ago (Open MPI).
See www.open-mpi.org.
On Jan 30, 2010, at 1:04 AM, kartik kumar wrote:
> Hello,
>
> I am trying to make a two node cluster each with RHEL 4 and LAM 7.1.4 installed on it.
> When i run the command:
>
> $ lamboot -v hostfile
> where
> $ cat hostfile
> 192.168.1.9 node0
> 192.168.1.10 node1
>
> The error message : connection refused by 192.168.1.10 (node1) is recieved .
> I have LAM binaries at /home/ganesh/lam on master node n0 and at /home/ram/lam on slave node n1.
> Is it necessary that LAM binaries be present in the same directory on both n0 and n1 machines?
>
> Please help.
>
>
> P.Kartik Kumar
>
>
>
> _______________________________________________
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--
Jeff Squyres
jsquyres_at_[hidden]
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