Parallel computations on the blade server at Széchenyi University - classic problem in practice
László Környei, Gábor Kallós, D. Fülep · Acta Technica Jaurinensis · 2010
Machines with huge computational power have become gradually affordable even for researchers of the universities in Hungary. In the summer of 2009 Szechenyi University also obtained a modern blade server. Using this machine we have solved several problems, these have given us a broad spectrum survey on the benefits and complications that come from performing concurrency in practice. After a short general introduction the machine of the university is presented in this paper (hardware, access, environment of execution), followed by the classic laws of multiprocessing systems. We present and examine several interesting problems afterwards. We show, that classic theorems are applicable in the case of problems with properly big computational- and properly low communication costs. Based on empiric argumentation we propose an amendment to Amdahl's laws to consider initialization time in multiprocessing systems. Additional effects of the multiprocessing environment are presented in the second part of the article.