Viper hardware details

This page summarizes additional details on the Viper hardware and presents performance measurements from microbenchmarks.

Empirical Roofline Models

Below, empirical roofline plots are presented that are based on measurements made on a CPU node. There are two different memory configurations available. The standard nodes have 512GB per node and show a lower memory bandwith than the larger 768GB nodes. Roofline models illustrate the limitations of a computational kernel due to either the memory bandwidth or the maximum floating point performance of the hardware, depending on the arithmetic intensity of that kernel.