Towards Use of Mixed Precision in ECP Math Libraries

Technical Report · Thu Jan 21 00:00:00 EST 2021

DOI:https://doi.org/10.2172/1762902· OSTI ID:1762902

Anzt, Hartwig ^[1]; Boman, Eric G. ^[2]; Gates, Marj ^[3]; Kruger, Scott ^[4]; Li, Sherry ^[5]; Loe, Jennifer ^[2]; Osei-Kuffuor, Daniel ^[6]; Tomov, Stan ^[3]; Tsai, Yaohung M. ^[3]; Yang, Ulrike Meier ^[6]

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1. Karlsruhe Inst. of Technology (KIT) (Germany)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
3. Univ. of Tennessee, Knoxville, TN (United States)
4. Tech-X Corp., Boulder, CO (United States)
5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
6. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The use of multiple types of precision in mathematical software has the potential to increase its performance on new heterogeneous architectures. The xSDK project focuses both on the investigation and development of multiprecision algorithms as well as their inclusion into xSDK member libraries. This report summarizes current efforts on including and/or using mixed precision capabilities in the math libraries Ginkgo, heFFTe, hypre, MAGMA, PETSc/TAO, SLATE, SuperLU, and Trilinos, including KokkosKernels. It contains both numerical results from libraries that already provide mixed precision capabilities, as well as descriptions of the strategies to incorporate multiprecision into established libraries.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 1762902
• Report Number(s): LLNL-TR-816649; 1026283
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING