Decoupled
Adam Lackorzyński, Carsten Weinhold, Hermann Härtig · 2016
Today's high-performance computing (HPC) landscape is dominated by clusters built from commodity hardware. The nodes of these systems are essentially x86-based servers that run an operating system (OS) derived from an enterprise Linux distribution. In contrast, previous generations of supercomputers ran OSes that were designed specifically for the needs of HPC applications. The migration from these special-purpose OSes to off-the-shelf system software brought many advantages for both vendors and users, most importantly reduced costs and a larger feature set. However, it also left behind an important property: jitter-free execution of parallel programs.