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Subject: Re: [OMPI users] Communications problems w/OpenMPI
From: deadchicken_at_[hidden]
Date: 2008-12-18 06:28:56


Jeroen Kleijer wrote:
> The stable branch (1.2.x) works perfectly but _only_ when the
> communication channel between machines are in the same subnet.
> (ethernet)
> Since you don't have that much control over which subnet your machines
> get in, OpenMPI has a tendency to fail in Amazon's EC2.
>
> However, if you're able to compile and use a version of the
> development branch (1.3) you should be use compile and run the "hello
> world" program without problems, regardless of the subnet they're in.

I was hoping to avoid something like that (I originally used apt-get to
install OpenMPI) but I guess I have little choice. We'll see how that goes.

In any case, thank you for the response and solution.