Resilience Against Soft Faults through Adaptivity in Spectral Deferred Correction

Abstract

As supercomputers grow in hardware complexity, their susceptibility to faults increases and measures need to be taken to ensure the correctness of results. Some numerical algorithms have certain characteristics that allow them to recover from some types of faults. It has been demonstrated that adaptive Runge-Kutta methods provide resilience against transient faults without adding computational cost. Using recent advances in adaptive step size selection for spectral deferred correction (SDC), an iterative numerical time stepping scheme that can produce methods of arbitrary order, we show that adaptive SDC can also detect and correct transient faults. Its performance is found to be comparable to that of the dedicated resilience strategy Hot Rod.

References in corpus (6)

• Silent error detection in numerical time-stepping schemes
• Spectral deferred corrections with fast-wave slow-wave splitting
• Achieving algorithmic resilience for temporal integration through spectral deferred corrections
• Improving Efficiency of Parallel Across the Method Spectral Deferred Corrections
• Adaptive time step selection for Spectral Deferred Correction
• Parallel performance of shared memory parallel spectral deferred corrections