Re: galaxy collision demo

From: Jay Billings <>
Date: Mon, 21 Sep 2009 10:51:16 -0400


You are correct that you should see a snapshot at t=0 for the test problem.
Did you look in the galaxy/ directory? The snapshots are stored there.

The test problem with default settings only outputs six or seven snapshot
files from t=0 to t=3.0. I'm a bit concerned that it has taken "days"
without creating any snapshot files; that test problem runs in 15 minutes on
my quad core machine and in about an hour on my old P4. When I first started
working with Gadget2 I encountered a similar problem to yours and it turned
out to be a compile error.

If you are only interested in videos, you might check out my youtube page: . These are videos of a different


On Mon, Sep 21, 2009 at 10:39 AM, Douglas/Lesli Summerstay <> wrote:

> I am trying to run the galaxy collision sample and had a few questions:I
> am trying to run it on a single processor. How long should I expect to
> wait before seeing any output snapshot files? (I am using the default
> parameter file.) I left it running for days without seeing any snapshot
> files created. This seems odd because the first snapshot is supposed to be
> created at time 0. Any idea why no snapshot files are being
> created? Alternately, could anyone run this simulation and make the snapshot
> files available to me?
> Are the pictures of colliding galaxies on the Gadget site (
> ) from this
> simulation?
> Thanks for your help.
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Received on 2009-09-21 16:51:17

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