I presented, in the European Congress on Computational Methods in Applied Sciences and Engineering, some high-performance aspects and code design of Tamaas, in the open-source softwares in mechanics symposium co-organized by Vladislav Yastrebov (Mines PSL), Lukasz Kaczmarczyk (U. Glasgow), Tzanio Kolev (Laurence Livermore National Labs), Andrei Shvarts (U. Glasgow).