Re: galaxy collision demo

From: David Williamson <>
Date: Mon, 21 Sep 2009 11:58:30 -0300

Also, try checking the other output files in the galaxy/ directory,
such as cpu.txt, energy.txt, info.txt, timings.txt etc... That should
tell you if you are performing any steps at all.


On 21/09/2009, at 11:51 AM, Jay Billings wrote:

> Douglas,
> 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 simulation.
> Jay
> 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 (http://
> ) from this
> simulation?
> Thanks for your help.
> --
Received on 2009-09-21 17:40:26

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