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arXiv · 1804.10120

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

Adam G. M. Lewis·Harald P. Pfeiffer
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Abstract

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.

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Adam G. M. Lewis, Harald P. Pfeiffer. 2018-04-24. Automatic generation of CUDA code performing tensor manipulations using C++ expression templates. https://arxiv.org/abs/1804.10120

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