Hi,
There is a thorn AEIThorns/ADMMass which computes the ADM mass of a spacetime. I have recently been asked why this thorn is not included in the ET. According to its README file, the thorn was written by Frank Loeffler and is GPL. It has been contributed to by Frank, Luca and Erik. It has a test suite but no documentation.
Should we aim to include this thorn in the next release? Is the functionality to compute the ADM mass available elsewhere in the ET?
On Dec 16, 2011, at 2:18 PM, Ian Hinder wrote:
Is the functionality to compute the ADM mass available elsewhere in the ET?
QuasiLocalMeasures integrates the corresponding integrand over an arbitrary sphere, and calls it an "adm_energy". It does not, however, provide an extrapolation to infinity.
What does ADMMass do exactly?
Eloisa
On Fri, Dec 16, 2011 at 03:14:00PM +0100, Eloisa Bentivegna wrote:
QuasiLocalMeasures integrates the corresponding integrand over an arbitrary sphere, and calls it an "adm_energy". It does not, however, provide an extrapolation to infinity.
What does ADMMass do exactly?
It can compute the surface an/or the volume integral across/inside multiple boxes. One disadvantage is that is still uses ADMMacros, but if you can live with that (or change it), it should work ok. For the volume integral it can also excise the inside of apparent horizons, for obvious reasons.
Frank
I would be happy to have it included, but am obviously biased.
Frank
Am 16.12.2011 um 07:18 schrieb Ian Hinder ian.hinder@aei.mpg.de:
Hi,
There is a thorn AEIThorns/ADMMass which computes the ADM mass of a spacetime. I have recently been asked why this thorn is not included in the ET. According to its README file, the thorn was written by Frank Loeffler and is GPL. It has been contributed to by Frank, Luca and Erik. It has a test suite but no documentation.
Should we aim to include this thorn in the next release? Is the functionality to compute the ADM mass available elsewhere in the ET?
-- Ian Hinder http://numrel.aei.mpg.de/people/hinder
Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users
We should include it if there are people using it, or interested in using it. This would probably mean that someone describes the algorithm in more detail, and shows some results of errors and convergence for a few examples (single black hole, neutron star, maybe comparing to what TwoPunctures say for initial conditions).
-erik
On Fri, Dec 16, 2011 at 8:18 AM, Ian Hinder ian.hinder@aei.mpg.de wrote:
Hi,
There is a thorn AEIThorns/ADMMass which computes the ADM mass of a spacetime. I have recently been asked why this thorn is not included in the ET. According to its README file, the thorn was written by Frank Loeffler and is GPL. It has been contributed to by Frank, Luca and Erik. It has a test suite but no documentation.
Should we aim to include this thorn in the next release? Is the functionality to compute the ADM mass available elsewhere in the ET?
-- Ian Hinder http://numrel.aei.mpg.de/people/hinder
Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users
Hi, I was the one actually asking Ian if there was a reason for ADMMass not being in ET and if there were any alternatives in ET. I use it regularly for my simulations.
Cheers, Bruno
On Dec 16, 2011, at 4:08 PM, Erik Schnetter wrote:
We should include it if there are people using it, or interested in using it. This would probably mean that someone describes the algorithm in more detail, and shows some results of errors and convergence for a few examples (single black hole, neutron star, maybe comparing to what TwoPunctures say for initial conditions).
-erik
On Fri, Dec 16, 2011 at 8:18 AM, Ian Hinder ian.hinder@aei.mpg.de wrote: Hi,
There is a thorn AEIThorns/ADMMass which computes the ADM mass of a spacetime. I have recently been asked why this thorn is not included in the ET. According to its README file, the thorn was written by Frank Loeffler and is GPL. It has been contributed to by Frank, Luca and Erik. It has a test suite but no documentation.
Should we aim to include this thorn in the next release? Is the functionality to compute the ADM mass available elsewhere in the ET?
-- Ian Hinder http://numrel.aei.mpg.de/people/hinder
Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users
-- Erik Schnetter schnetter@cct.lsu.edu http://www.cct.lsu.edu/~eschnett/
Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users
Dr. Bruno Giacomazzo JILA - University of Colorado 440 UCB Boulder, CO 80309 USA
Tel. : +1 303-492-0389 Fax : +1 303-492-5235 email : bruno.giacomazzo@jila.colorado.edu web: http://www.brunogiacomazzo.org
---------------------------------------------------------------------- There are only 10 types of people in the world: Those who understand binary, and those who don't ----------------------------------------------------------------------
Then let's include it
Quality control requires a bit of documentation before it can be accepted.
-erik
On Fri, Dec 16, 2011 at 11:00 AM, Bruno Giacomazzo < bruno.giacomazzo@jila.colorado.edu> wrote:
Hi, I was the one actually asking Ian if there was a reason for ADMMass not being in ET and if there were any alternatives in ET. I use it regularly for my simulations.
Cheers, Bruno
On Dec 16, 2011, at 4:08 PM, Erik Schnetter wrote:
We should include it if there are people using it, or interested in using it. This would probably mean that someone describes the algorithm in more detail, and shows some results of errors and convergence for a few examples (single black hole, neutron star, maybe comparing to what TwoPunctures say for initial conditions).
-erik
On Fri, Dec 16, 2011 at 8:18 AM, Ian Hinder ian.hinder@aei.mpg.de wrote:
Hi,
There is a thorn AEIThorns/ADMMass which computes the ADM mass of a spacetime. I have recently been asked why this thorn is not included in the ET. According to its README file, the thorn was written by Frank Loeffler and is GPL. It has been contributed to by Frank, Luca and Erik. It has a test suite but no documentation.
Should we aim to include this thorn in the next release? Is the functionality to compute the ADM mass available elsewhere in the ET?
-- Ian Hinder http://numrel.aei.mpg.de/people/hinder
Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users
-- Erik Schnetter schnetter@cct.lsu.edu http://www.cct.lsu.edu/~eschnett/
Users mailing list Users@einsteintoolkit.org http://lists.einsteintoolkit.org/mailman/listinfo/users
Dr. Bruno Giacomazzo JILA - University of Colorado 440 UCB Boulder, CO 80309 USA
Tel. : +1 303-492-0389 Fax : +1 303-492-5235 email : bruno.giacomazzo@jila.colorado.edu web: http://www.brunogiacomazzo.org
There are only 10 types of people in the world: Those who understand binary, and those who don't
users@lists.einsteintoolkit.org
-
Bruno Giacomazzo -
Eloisa Bentivegna -
Erik Schnetter -
Frank Loeffler -
Ian Hinder