TY  - CHAP
AU  - Lengauer, Christian
AU  - Apel, Sven
AU  - Bolten, Matthias
AU  - Chiba, Shigeru
AU  - Rüde, Ulrich
AU  - Teich, Jürgen
AU  - Größlinger, Armin
AU  - Hannig, Frank
AU  - Köstler, Harald
AU  - Claus, Lisa
AU  - Grebhahn, Alexander
AU  - Groth, Stefan
AU  - Kronawitter, Stefan
AU  - Kuckuk, Sebastian
AU  - Rittich, Hannah
AU  - Schmitt, Christian
AU  - Schmitt, Jonas
TI  - ExaStencils: Advanced Multigrid Solver Generation
VL  - 136
CY  - Berlin
PB  - Springer
M1  - FZJ-2021-00052
SN  - 978-3-030-47955-8
T2  - Lecture Notes in Computational Science and Engineering
SP  - 405 - 452
PY  - 2020
AB  - Present-day stencil codes are implemented in general-purpose programming languages, such as Fortran, C, or Java, Python or derivates thereof, and harnesses for parallelism, such as OpenMP, OpenCL or MPI. Project ExaStencils pursued a domain-specific approach with a language, called ExaSlang, that is stratified into four layers of abstraction, the most abstract being the formulation in continuous mathematics and the most concrete a full, automatically generated implementation. At every layer, the corresponding language expresses not only computational directives but also domain knowledge of the problem and platform to be leveraged for optimization. We describe the approach, the software technology behind it and several case studies that demonstrate its feasibility and versatility: high-performance stencil codes can be engineered, ported and optimized more easily and effectively.
LB  - PUB:(DE-HGF)7
UR  - https://juser.fz-juelich.de/record/889127
ER  -