Fault-tolerant Parallel-in-Time Integration with PFASST

Speaker: Robert Speck (JSC)
Date: Thursday, 3 December 2015, 10:30-12:00
Session: Resilience I
Talk type: Short talk (15 min)

Abstract: For time-dependent PDEs, parallel-in-time integration with e.g. the "parallel full approximation scheme in space and time" (PFASST) is a promising way to accelerate existing space-parallel approaches beyond their scaling limits. In addition, the iterative, multi-level nature of PFASST can be exploited to recover from hardware failures, preventing a breakdown of the time integration process. In this talk, we present various recovery strategies, show their impact and discuss open problems, challenges as well as collaboration opportunities for the implementation on HPC architectures.