ssh: connect to host ubuntu port 22: Connection refused

Hi Andrew,

Thanks for your interest in ESyS-Particle and your question. I've not encountered this problem before but I suspect that it may be similar to a problem experienced by a couple of others, see this question:
https://answers.launchpad.net/esys-particle/+question/70285

For a start, I would suggest you open a terminal window and type:

sudo gedit /etc/hosts

This should open the /etc/hosts file in a text editor. Add the following lines to the top of that file:

127.0.0.1 localhost
w.x.y.z myhost.mydomain myhost

where w.x.y.z is the IP address of your PC and myhost.mydomain are your PC hostname and DNS domain respectively.

If this doesn't work, could you please let me know which version of OpenMPI you have installed. You can do this by typing the following in the terminal:

dpkg -l | grep openmpi

I hope this helps.

Cheers,

Dion.

Hi Dion,

Thank you for your help. I actually had another problem with my Ubuntu installation which meant I had to re-install. I took the opportunity to revert to version 8.04 and your "standard" system. After a bit of a tussle I have managed to get esys-particle to work with the bingle scripts (although I do still get some funny messages during execution and my terminal doesn't return when the run finishes, as reported by others), so today I'm generally a pretty happy bunny!

For your interest, I am planning on having a go at using esys for modelling bone graft and bone graft substitutes. These are relatively large grained particulate materials (a civil engineer or soil mechanist would call them "friable aggregates" I think, we call them "morcellised" since they are made by grinding up bits of solid bone). We've used (continuum) finite element models in the past but I've never really been comfortable with the assumptions that are made, mostly due to the relative scales of the particle size and the graft layer thicknesses used in practice. I don't think anyone else has tried modelling bone graft with DEM. I am guessing I am going to have to get into using multiple spherical particles in clusters to try and represent the geometrically complex graft particles. I'll let you know how I get on (and no doubt come begging for more help!).

Cheers

Andrew

Andrew New
Apogee Engineering Analysis Solutions Ltd
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________________________________

From: <email address hidden> on behalf of Dion Weatherley
Sent: Sun 07/06/2009 22:34
To: Andrew New
Subject: Re: [Question #73349]: ssh: connect to host ubuntu port 22:Connection refused

Your question #73349 on ESyS-Particle changed:
https://answers.launchpad.net/esys-particle/+question/73349

    Status: Open => Answered

Dion Weatherley proposed the following answer:
Hi Andrew,

Thanks for your interest in ESyS-Particle and your question. I've not encountered this problem before but I suspect that it may be similar to a problem experienced by a couple of others, see this question:
https://answers.launchpad.net/esys-particle/+question/70285

For a start, I would suggest you open a terminal window and type:

sudo gedit /etc/hosts

This should open the /etc/hosts file in a text editor. Add the
following lines to the top of that file:

127.0.0.1 localhost
w.x.y.z myhost.mydomain myhost

where w.x.y.z is the IP address of your PC and myhost.mydomain are your
PC hostname and DNS domain respectively.

If this doesn't work, could you please let me know which version of
OpenMPI you have installed. You can do this by typing the following in
the terminal:

dpkg -l | grep openmpi

I hope this helps.

Cheers,

Dion.

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Hi Andrew,

Glad you are now up and running with ESyS-Particle. You might be interested to know that we are currently working on a new release of ESyS-Particle for later this year. The release will include a bugfix for the problem with bingle scripts that do not terminate as well as a new geometry creation library with many more features than currently available in-line. The new library includes some tools for constructing geometries comprised of clustered particles which might be useful for your application.

Feel free to ask questions at any time and have fun!

Cheers,

Dion.