Automatic generation of CUDA code performing tensor manipulations using C++ 
expression templates

Lewis, Adam G. M.; Pfeiffer, Harald P.

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Automatic generation of CUDA code performing tensor manipulations using C++ expression templates

MPG-Autoren

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Pfeiffer, Harald P.
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Lewis, A. G. M., & Pfeiffer, H. P. (in preparation). Automatic generation of CUDA code performing tensor manipulations using C++ expression templates.

Zitierlink: https://hdl.handle.net/21.11116/0000-0003-652B-C

Zusammenfassung

We present a C++ library, TLoops, which uses a hierarchy of expression
templates to represent operations upon tensorial quantities in single lines of
C++ code that resemble analytic equations. These expressions may be run as-is,
but may also be used to emit equivalent low-level C or CUDA code, which either
performs the operations more quickly on the CPU, or allows them to be rapidly
ported to run on NVIDIA GPUs. We detail the expression template and C++-class
hierarchy that represents the expressions and which makes automatic
code-generation possible. We then present benchmarks of the expression-template
code, the automatically generated C code, and the automatically generated CUDA
code running on several generations of NVIDIA GPU.