Hi Ian, Carlos,

thanks a lot for your feedback.
Together with Miguel Zilhao we are planning to perform these scaling tests using the Einstein Toolkit together with the McLachlan and/or our own evolution thorns on the Cosmos cluster at the University of Cambridge.
If you are interested, we would be happy to make the results available to the community and to the public, e.g., on the wiki.

We were thinking about evolving a head-on collision of two black holes to avoid contamination by the initial data construction. We would restrict the output to "carpet-timing..asc" and "AllTimers*". Would you recommend any other output to monitor the performance during these tests?
Please let us know if you have any other comments.

Best wishes,
Helvi & Miguel

===========================================
Dr. Helvi Witek
Marie-Curie Research Fellow
Dep. Fisica Quantica i Astrofisica & ICCUB
Universitat de Barcelona
===========================================

On Wed, May 10, 2017 at 4:40 PM, Carlos Lousto <colsma@rit.edu> wrote:
Agreed, but the available machines in Xsede change every 3 years or so. It would be nice if we had a way to update/add to such "live" paper with a supplementary repo(?)

Carlos Lousto

On May 10, 2017, at 10:29 AM, Ian Hinder <ian.hinder@aei.mpg.de> wrote:


On 10 May 2017, at 15:31, helvi witek <hwitek@icc.ub.edu> wrote:

Hi everyone,

we are going to apply for HPC time using the Lean code which is largely based on the Einstein Toolkit. Among the required technical information are scaling tests. While we will perform our own tests I also checked for "official" information for the ET. I noticed that there is very little public information, e.g. on the wiki, about recent (say, within the last five years) scaling tests aside from Eloisa's recent paper
and this tracker
http://lists.einsteintoolkit.org/pipermail/users/2013-February/002815.html

Did I miss anything? It might be a good idea to add a standardized test or references to the wiki page.

It would probably be very useful for many groups if we were to write a short paper describing the scaling of the ET in various cases on current HPC machines.  For someone running simulations very similar to those used, referring to such a paper may be sufficient to demonstrate scaling of the code for a proposal.  If the code used was quite different, then if the parameter files and any required scripts from such a paper were made public, it would be easier for each group to adapt them to their own code.


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