CPU overheating characterization in HPC systems: a case study - Archive ouverte HAL Access content directly
Conference Papers Year :

CPU overheating characterization in HPC systems: a case study

Caractérisation des surchauffes CPU dans les systèmes HPC : un cas d'étude

(1, 2) , (3) , (1) , (3)
1
2
3

Abstract

With the increase in size of supercomputers, also increases the number of abnormal events. Some of these events might lead to an application failure. Others might simply impact the system efficiency. CPU overheating is one such event that decreases the system efficiency: when a CPU overheats, it reduces its frequency. This paper studies the problem of CPU overheating in supercomputers. In a first part, we analyze data collected over one year on a supercomputer of the top500 list to understand under which conditions CPU overheating occurs. Our analysis show that overheating events are due to some specific applications. In a second part, we evaluate the impact of such overheating events on the performance of MPI applications. Using 6 representative HPC benchmarks, we show that for a majority of the applications, a frequency drop on one CPU impacts the execution time of distributed runs proportionally to the duration and to the extent of the frequency drop.
Fichier principal
Vignette du fichier
CPU_Overheating_Characterization_in_HPC_Systems:A_Case_Study.pdf (332.88 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01949708 , version 1 (10-12-2018)

Identifiers

  • HAL Id : hal-01949708 , version 1

Cite

Marc Platini, Thomas Ropars, Benoit Pelletier, Noël de Palma. CPU overheating characterization in HPC systems: a case study. Fault Tolerance for HPC at eXtreme Scale (FTXS) Workshop, Nov 2018, Dallas, United States. ⟨hal-01949708⟩
72 View
654 Download

Share

Gmail Facebook Twitter LinkedIn More