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001033636 1001_ $$0P:(DE-Juel1)177933$$aWitzler, Christian$$b0
001033636 245__ $$aJuMonC: A RESTful tool for enabling monitoring and control of simulations at scale
001033636 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2025
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001033636 520__ $$aAs systems and simulations grow in size and complexity, it is challenging to maintain efficient use of resources and avoid failures. In this scenario, monitoring becomes even more important and mandatory. This paper describes and discusses the benefits of the advanced monitoring and control tool JuMonC, which runs under user control alongside HPC simulations and provides valuable metrics via REST-API. In addition, plugin extensibility allows JuMonC to go a step further and provide computational steering of the simulation itself. To demonstrate the benefits and usability of JuMonC for large-scale simulations, two use cases are described employing nekRS and ICON on JURECA-DC, a supercomputer located at the Jülich Supercomputing Centre (JSC). Furthermore, a large-scale use case with nekRS on JSC’s flagship system JUWELS Booster is described. Finally, the interplay between JuMonC and LLview (a standard monitoring tool for HPC systems) is presented using a simple and secure JuMonC-LLview plugin, which collects performance metrics and enables their analysis in LLview. Overall, the portability and usefulness of JuMonC, together with its low performance impact, make it an important application for both current and future generations of exascale HPC systems.
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001033636 536__ $$0G:(EU-Grant)955811$$aIO-SEA - IO  Software for Exascale Architecture (955811)$$c955811$$fH2020-JTI-EuroHPC-2019-1$$x2
001033636 536__ $$0G:(EU-Grant)955606$$aDEEP-SEA - DEEP – SOFTWARE FOR EXASCALE ARCHITECTURES (955606)$$c955606$$fH2020-JTI-EuroHPC-2019-1$$x3
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001033636 7001_ $$0P:(DE-Juel1)162225$$aGuimarães, Filipe Souza Mendes$$b1
001033636 7001_ $$0P:(DE-HGF)0$$aMira, Daniel$$b2
001033636 7001_ $$0P:(DE-HGF)0$$aAnzt, Hartwig$$b3
001033636 7001_ $$0P:(DE-Juel1)168541$$aGöbbert, Jens Henrik$$b4
001033636 7001_ $$0P:(DE-Juel1)132108$$aFrings, Wolfgang$$b5
001033636 7001_ $$0P:(DE-Juel1)192255$$aBode, Mathis$$b6$$eCorresponding author
001033636 773__ $$0PERI:(DE-600)2020551-X$$a10.1016/j.future.2024.107541$$gVol. 164, p. 107541 -$$p107541 -$$tFuture generation computer systems$$v164$$x0167-739X$$y2025
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