Resumen de An introduction to stochastic bin packing-based server consolidation with conflicts

John Martinovic, Markus Hähnel, Guntram Scheithauer, Waltenegus Dargie

• The energy consumption of large-scale data centers or server clusters is expected to grow signifcantly in the next couple of years contributing to up to 13% of the worldwide energy demand in 2030. As the involved processing units require a disproportional amount of energy when they are idle, underutilized, or overloaded, balancing the supply of and the demand for computing resources is a key issue to obtain energy-efcient server consolidations. Whereas traditional concepts mostly consider deterministic predictions of the future workloads or only aim at fnding approximate solutions, in this article, we propose an exact approach to tackle the problem of assigning jobs with (not necessarily independent) stochastic characteristics to a minimal amount of servers subject to further practically relevant constraints. As a main contribution, the problem under consideration is reformulated as a stochastic bin packing problem with conficts and modeled by an integer linear program.

  Finally, this new approach is tested on real-world instances obtained from a Google data center.