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LANS Informal Seminar: Michel Schanen
November 2, 2016 @ 15:00 CDT
Seminar Title: Adjoint Checkpointing in Nek5000
Speaker: Michel Schanen, Postdoctoral Appointee, MCS, Argonne National Laboratory
Date/Time: 2016-11-02 15:00
Location: Building 240 Rm 1406-7
Description:
Adjoint checkpointing is one of the core components of an adjoint model
implementation. In Nek5000 it reduces the memory complexity by defining
an efficient tradeoff between recomputation and storage of the primal
solution at each timestep. This talk gives an overview of the adjoint
checkpointing strategy currently employed in Nek5000 on Mira and KNL.
Additionally, the implementation of a scalable lossy checkpoint
compression is presented.