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Spliss: Transparent Integration of Emerging HPC Technologies into CFD Solvers and Applications

Wagner, Michael and Krzikalla, Olaf and Rempke, Arne and Gerhold, Thomas (2021) Spliss: Transparent Integration of Emerging HPC Technologies into CFD Solvers and Applications. Platform for Advanced Scientific Computing Conference (PASC21), 05.-09. Jul 2021, Geneva, Switzerland.

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Solving linear equation systems is an integral part of implicit methods in computational fluid dynamics (CFD). It affects their numerical robustness as well as their computational efficiency. The efficient solving of large linear systems that result from the discretization of the Reynolds-averaged Navier-Stokes equations (RANS) in CFD methods requires algorithms that are well adapted to the specific numerical problems, which is usually not covered by generic solver libraries. The Sparse Linear System Solver (Spliss) aims to provide a linear solver library that, on the one hand, is tailored to requirements of CFD applications but, on the other hand, independent of the particular CFD solver. Focusing on the specific task of solving linear systems allows for integrating more advanced, but also more complex, hardware-specific optimizations, while at the same time hiding this complexity from the CFD solver. One example is the usage of GPUs. Spliss enables the execution of the computationally intensive linear solver on GPUs in a transparent way. This way, the CFD solver can leverage GPUs without the necessity of any code adaption. We evaluate first performance results on a GPU cluster and compare Spliss to established libraries to study correctness and performance.

Item URL in elib:https://elib.dlr.de/143413/
Document Type:Conference or Workshop Item (Speech)
Title:Spliss: Transparent Integration of Emerging HPC Technologies into CFD Solvers and Applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wagner, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-5767-1716
Date:July 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:CFD, linear solver, sparse linear solver, Spliss, CODA
Event Title:Platform for Advanced Scientific Computing Conference (PASC21)
Event Location:Geneva, Switzerland
Event Type:international Conference
Event Dates:05.-09. Jul 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Aircraft and  Validation
Location: Dresden
Institutes and Institutions:Institute of Software Methods for Product Virtualization > High Perfomance Computing
Deposited By: Wagner, Dr. Michael
Deposited On:10 Aug 2021 19:48
Last Modified:10 Aug 2021 19:48

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