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Evaluating Usage and Performance of DAOS for a Classic HPC Application
DescriptionThe intended talk will present early performance numbers of using DAOS for a checkpoint and restart mechanism in a classic HPC application: PALM - an large-eddy simulation code written in Fortran. Different methods are supported: Fortran IO with a file-per-process scheme and two MPI IO based methods that use a single shared file and where one method can aggregate IO in a single process per node. The presentation will reveal early performance numbers of the Fortran IO and the two MPI IO variants in PALM using 9.216 MPI processes and both MPICHs native DAOS support as well as mounted DAOS containers in the Linux filesystem. The DAOS system used in the study provides approx. 0.5 PB of storage using Optane memory technology distributed accross 19 storage nodes and is connected to the HPC system via an Omni-Path interconnect. Finally, the numbers are compared to Lustre and GPFS filesystems in production.
Author/Presenter
Event Type
Workshop
TimeMonday, 17 November 20254:25pm - 4:30pm CST
Location230
Data Analytics
High Performance I/O, Storage, Archive, & File Systems
Storage
Livestreamed
Recorded
TP
W