Does anyone have any knowledge or direction for creating a homemade Beowolf cluster for materials modeling?I would like to be able to run my own "hobby" simulations at home, so a low energy, low capital investment is what I seek.
Raspberry Pi and ODroid use small, cheap, low energy single board computers (SBC) that can be stacked into a cluster. A demonstration cluster was made in 2013 in the UK Raspberry Pi demonstration cluster. I have not found examples of molecular simulation being applied to these clusters (GROMACS or GAMESS type applications). My concern is that they may not be able to handle long term simulations?
Are there any recent examples of these SBC clusters handling prolonged workload, and in particular, are there examples of molecular simulations being successful? I have tried reaching out to the SBC community, however, molecular dynamics and quantum chemistry gets me blank stares.
I just found this paper comparing the ODroid-MC1 to supercomputer cluster CPU's. The Odroid-MC1 is a 32 cpu cluster for \$220, and the CPU's compared against retail at \$9000+. The test problem was solving Lattice-Boltzmann flow computations. They found that ODroid-MC1 was only 4 times slower, and this was largely due to its use of 32-bit ARMv7. It can therefore likely be expected that using 64-bit ARMv8 and newer would make ODroid-MC1 very competitive, and incredibly cheap. ODroid consistently beats raspberry pi for speed.