question

[FURUNZ]

Using the four solvers SeisSol_proxy_Release_dhsw_4_elastic, SeisSol_proxy_Release_dskx_4_elastic, SeisSol_Release_dhsw_4_elastic, and SeisSol_Release_dskx_4_elastic, what are the differences between them? Where can I find detailed information about these solvers, and which one should I use for running different examples?"

[davschneller]

Hi, thank you for your question.

I'll convert (or rather: have converted) this issue to a discussion, and answer it there (it's more suited for that style of questions).

[davschneller]

Answer: SeisSol_Release_dhsw_4_elastic (maybe SeisSol_Release_dskx_4_elastic works as well)

More details: the four executables differ in two ways:

• the two of them start with SeisSol_proxy (the first two names you mentioned) are used for benchmarking the application, but not for running the examples. You can see that e.g. when running them in the terminal without arguments. In contrast, the latter two of them can be used to run the examples, e.g. by running SeisSol_Release_dhsw_4_elastic parameters.par after generating a mesh (or using the precomputed-seissol repository)
• two of the executables were compiled for the target hsw, and two for skx. The difference here is: skx is usually the more efficient/capable one, but it usually only works on compute clusters (it needs AVX512 support). In contrast, hsw runs on almost all personal computers after about 2014. I'd suggest to try running hsw (i.e. SeisSol_Release_dhsw_4_elastic). If everything works, you can try the skx (i.e. SeisSol_Release_dskx_4_elastic)—but you may receive a SIGILL error when running on a machine which is not capable of it.

Other than that, the name indicates, that you've compiled SeisSol, with Release build settings, for double precision (hence the d) for either hsw or skx, with order 4, for the isotropic elastic wave equation.

EDIT: an overview over the models supported by Seissol can be e.g. found in https://seissol.readthedocs.io/en/latest/physical-models.html