Yes, exactly. For an efficient code, especially with long range interactions, I might recommend the use of C++.

On 14 May 2017, at 02:05, McMahon, Andrew P <andrew.mcmahon13@imperial.ac.uk> wrote:

Hi all,

Forgive previous email, have now installed the ALPS package and I have tutorials etc running.

I am trying to develop a classical Monte Carlo simulation with long range dipole-dipole interactions, the energy of which will be calculated through an Ewald summation - does anyone have any advice on how best to approach this through ALPS (I don't want to reinvent the wheel if there is already a way to do it in the package)?

I suppose I can just create my own classes and energy methods in a similar fashion to this example http://alps.comp-phys.org/mediawiki/index.php/Tutorials:Code-01_Python, where the developer defines the energy update, is this how you would recommend I do it? I'm trying to think of the most efficient way from a development point of view.

Thanks all, great package by the way,

Andy McMahon.

----------------------------------------------- Andrew P. McMahon Theory and Simulation of Materials Imperial College London andrew.mcmahon13@imperial.ac.uk ------------------------------------------------

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