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000911980 1001_ $$0P:(DE-Juel1)190575$$aBaumann, Thomas$$b0$$eCorresponding author
000911980 1112_ $$a14th JLESC Workshop$$cUrbana, IL$$d2022-09-28 - 2022-09-30$$wUSA
000911980 245__ $$aResilience in Spectral Deferred Corrections
000911980 260__ $$c2022
000911980 3367_ $$033$$2EndNote$$aConference Paper
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000911980 520__ $$aAdvancement in computational speed is nowadays gained by using more processing units rather than faster ones. Faults in the processing units caused by numerous sources including radiation and aging have been neglected in the past. However, the increasing size of HPC machines makes them more susceptible and it is important to develop a resilience strategy to avoid losing millions of CPU hours. Parallel-in-time methods target the very largest of computers and are hence required to come with algorithm-based fault tolerance. We look here at spectral deferred corrections (SDC), which is a time marching scheme that is at the heart of parallel-in-time methods such as PFASST. Due to its iterative nature, there is ample opportunity to plug in computationally inexpensive fault tolerance schemes, many of which are also easy to implement. We experimentally examine the capability of various strategies to recover from single bit flips both for serial SDC as well as a small-scale parallel-in-time version with diagonal preconditioners.
000911980 536__ $$0G:(DE-HGF)POF4-5112$$a5112 - Cross-Domain Algorithms, Tools, Methods Labs (ATMLs) and Research Groups (POF4-511)$$cPOF4-511$$fPOF IV$$x0
000911980 536__ $$0G:(GEPRIS)450829162$$aDFG project 450829162 - Raum-Zeit-parallele Simulation multimodale Energiesystemen (450829162)$$c450829162$$x1
000911980 536__ $$0G:(EU-Grant)955701$$aTIME-X - TIME parallelisation: for eXascale computing and beyond (955701)$$c955701$$fH2020-JTI-EuroHPC-2019-1$$x2
000911980 7001_ $$0P:(DE-HGF)0$$aGötschel, Sebastian$$b1
000911980 7001_ $$0P:(DE-HGF)0$$aLunet, Thibaut$$b2
000911980 7001_ $$0P:(DE-HGF)0$$aRupprecht, Daniel$$b3
000911980 7001_ $$0P:(DE-Juel1)169281$$aSchöbel, Ruth$$b4
000911980 7001_ $$0P:(DE-Juel1)132268$$aSpeck, Robert$$b5
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