The NEST Dry-Run Mode: Efficient Dynamic Analysis of Neuronal Network Simulation Code

Susanne Kunkel, Wolfram Schenck
2017 Frontiers in Neuroinformatics  
NEST is a simulator for spiking neuronal networks that commits to a general purpose approach: It allows for high flexibility in the design of network models, and its applications range from small-scale simulations on laptops to brain-scale simulations on supercomputers. Hence, developers need to test their code for various use cases and ensure that changes to code do not impair scalability. However, running a full set of benchmarks on a supercomputer takes up precious compute-time resources and
more » ... can entail long queuing times. Here, we present the NEST dry-run mode, which enables comprehensive dynamic code analysis without requiring access to high-performance computing facilities. A dry-run simulation is carried out by a single process, which performs all simulation steps except communication as if it was part of a parallel environment with many processes. We show that measurements of memory usage and runtime of neuronal network simulations closely match the corresponding dry-run data. Furthermore, we demonstrate the successful application of the dry-run mode in the areas of profiling and performance modeling.
doi:10.3389/fninf.2017.00040 pmid:28701946 pmcid:PMC5487483 fatcat:a7z7cyqhtrbunaoggybaimtqwm